./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c3376ee309c42e8280cfc81381fd928e4a895fffc424cbfa81d01112976a2d85 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:13:31,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:13:31,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:13:31,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:13:31,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:13:31,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:13:31,962 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:13:31,964 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:13:31,966 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:13:31,967 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:13:31,968 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:13:31,970 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:13:31,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:13:31,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:13:31,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:13:31,974 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:13:31,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:13:31,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:13:31,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:13:31,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:13:31,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:13:31,996 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:13:31,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:13:31,998 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:13:32,002 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:13:32,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:13:32,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:13:32,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:13:32,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:13:32,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:13:32,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:13:32,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:13:32,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:13:32,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:13:32,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:13:32,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:13:32,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:13:32,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:13:32,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:13:32,024 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:13:32,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:13:32,027 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-26 00:13:32,073 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:13:32,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:13:32,074 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:13:32,074 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:13:32,075 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:13:32,075 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:13:32,076 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:13:32,076 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:13:32,076 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:13:32,076 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:13:32,078 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:13:32,078 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:13:32,078 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:13:32,078 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:13:32,079 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:13:32,079 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:13:32,079 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:13:32,079 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:13:32,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:13:32,080 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:13:32,081 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:13:32,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:13:32,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:13:32,081 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:13:32,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:13:32,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:13:32,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:13:32,082 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-26 00:13:32,083 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:13:32,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:13:32,083 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:13:32,084 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:13:32,084 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:13:32,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:13:32,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:13:32,085 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:13:32,085 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:13:32,085 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:13:32,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:13:32,086 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:13:32,086 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:13:32,086 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:13:32,086 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:13:32,086 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_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3376ee309c42e8280cfc81381fd928e4a895fffc424cbfa81d01112976a2d85 [2022-11-26 00:13:32,407 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:13:32,444 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:13:32,449 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:13:32,451 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:13:32,451 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:13:32,452 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2022-11-26 00:13:35,673 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:13:35,953 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:13:35,954 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c [2022-11-26 00:13:35,961 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/data/25946e284/5f72ce74296b41fbb21ed937498e1a38/FLAG193ef9635 [2022-11-26 00:13:35,988 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/data/25946e284/5f72ce74296b41fbb21ed937498e1a38 [2022-11-26 00:13:35,994 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:13:35,997 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:13:36,000 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:13:36,000 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:13:36,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:13:36,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:36,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67a13304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36, skipping insertion in model container [2022-11-26 00:13:36,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:13:35" (1/1) ... [2022-11-26 00:13:36,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:13:36,043 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:13:36,256 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c[454,467] [2022-11-26 00:13:36,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:13:36,268 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:13:36,283 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/sv-benchmarks/c/recursive-simple/id_i20_o20-1.c[454,467] [2022-11-26 00:13:36,283 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:13:36,297 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:13:36,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36 WrapperNode [2022-11-26 00:13:36,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:13:36,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:13:36,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:13:36,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:13:36,308 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,318 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,337 INFO L138 Inliner]: procedures = 13, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-26 00:13:36,337 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:13:36,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:13:36,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:13:36,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:13:36,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,348 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,349 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,354 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,362 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:13:36,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:13:36,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:13:36,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:13:36,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (1/1) ... [2022-11-26 00:13:36,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:13:36,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:36,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:13:36,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:13:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:13:36,451 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:13:36,451 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:13:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:13:36,452 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-11-26 00:13:36,452 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-11-26 00:13:36,532 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:13:36,534 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:13:36,707 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:13:36,737 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:13:36,738 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-26 00:13:36,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:13:36 BoogieIcfgContainer [2022-11-26 00:13:36,741 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:13:36,745 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:13:36,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:13:36,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:13:36,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:13:35" (1/3) ... [2022-11-26 00:13:36,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525e06ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:13:36, skipping insertion in model container [2022-11-26 00:13:36,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:13:36" (2/3) ... [2022-11-26 00:13:36,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@525e06ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:13:36, skipping insertion in model container [2022-11-26 00:13:36,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:13:36" (3/3) ... [2022-11-26 00:13:36,753 INFO L112 eAbstractionObserver]: Analyzing ICFG id_i20_o20-1.c [2022-11-26 00:13:36,778 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:13:36,778 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-11-26 00:13:36,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:13:36,843 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;@7b03131d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:13:36,844 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-26 00:13:36,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:13:36,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-26 00:13:36,858 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:36,859 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-26 00:13:36,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:36,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:36,867 INFO L85 PathProgramCache]: Analyzing trace with hash 62814452, now seen corresponding path program 1 times [2022-11-26 00:13:36,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:36,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82877367] [2022-11-26 00:13:36,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:36,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:37,164 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:37,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82877367] [2022-11-26 00:13:37,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82877367] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:37,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:37,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:13:37,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985812643] [2022-11-26 00:13:37,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:37,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:13:37,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:37,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:13:37,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:13:37,265 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.5) internal successors, (15), 14 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:37,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:37,404 INFO L93 Difference]: Finished difference Result 36 states and 37 transitions. [2022-11-26 00:13:37,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:13:37,409 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-26 00:13:37,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:37,419 INFO L225 Difference]: With dead ends: 36 [2022-11-26 00:13:37,419 INFO L226 Difference]: Without dead ends: 27 [2022-11-26 00:13:37,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:13:37,432 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:37,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 44 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:13:37,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-11-26 00:13:37,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2022-11-26 00:13:37,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 16 states have (on average 1.4375) internal successors, (23), 19 states have internal predecessors, (23), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:13:37,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2022-11-26 00:13:37,490 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 5 [2022-11-26 00:13:37,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:37,492 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2022-11-26 00:13:37,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:37,493 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2022-11-26 00:13:37,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-26 00:13:37,494 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:37,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-26 00:13:37,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:13:37,496 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:37,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:37,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1947248065, now seen corresponding path program 1 times [2022-11-26 00:13:37,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:37,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791403509] [2022-11-26 00:13:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:37,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:37,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:37,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791403509] [2022-11-26 00:13:37,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791403509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:37,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:37,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:13:37,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798021145] [2022-11-26 00:13:37,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:37,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:13:37,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:37,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:13:37,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:13:37,581 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:37,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:37,637 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-11-26 00:13:37,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:13:37,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-26 00:13:37,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:37,639 INFO L225 Difference]: With dead ends: 24 [2022-11-26 00:13:37,639 INFO L226 Difference]: Without dead ends: 23 [2022-11-26 00:13:37,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:13:37,642 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 21 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:37,642 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 14 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:13:37,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-26 00:13:37,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-11-26 00:13:37,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 16 states have (on average 1.3125) internal successors, (21), 18 states have internal predecessors, (21), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-26 00:13:37,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2022-11-26 00:13:37,650 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 6 [2022-11-26 00:13:37,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:37,651 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2022-11-26 00:13:37,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:37,651 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2022-11-26 00:13:37,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-26 00:13:37,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:37,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:37,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:13:37,653 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:37,654 INFO L85 PathProgramCache]: Analyzing trace with hash 200486833, now seen corresponding path program 1 times [2022-11-26 00:13:37,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:37,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574337726] [2022-11-26 00:13:37,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:37,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:37,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:37,819 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:37,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574337726] [2022-11-26 00:13:37,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574337726] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:37,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244894276] [2022-11-26 00:13:37,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:37,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:37,820 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:37,826 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:37,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:13:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:37,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-26 00:13:37,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:38,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:38,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244894276] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:38,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [107677731] [2022-11-26 00:13:38,177 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:13:38,178 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:38,184 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:13:38,186 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:38,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-11-26 00:13:38,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187365130] [2022-11-26 00:13:38,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:38,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-26 00:13:38,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:38,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-26 00:13:38,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:13:38,189 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:38,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:38,374 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2022-11-26 00:13:38,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-26 00:13:38,374 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-26 00:13:38,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:38,377 INFO L225 Difference]: With dead ends: 73 [2022-11-26 00:13:38,377 INFO L226 Difference]: Without dead ends: 65 [2022-11-26 00:13:38,378 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:13:38,379 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 126 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:38,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 75 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:13:38,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-11-26 00:13:38,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 53. [2022-11-26 00:13:38,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 40 states have (on average 1.325) internal successors, (53), 42 states have internal predecessors, (53), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-26 00:13:38,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2022-11-26 00:13:38,396 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 10 [2022-11-26 00:13:38,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:38,396 INFO L495 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2022-11-26 00:13:38,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 7 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:38,397 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2022-11-26 00:13:38,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-26 00:13:38,398 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:38,398 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:38,415 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:38,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:38,605 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:38,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:38,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1383499620, now seen corresponding path program 1 times [2022-11-26 00:13:38,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:38,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992317741] [2022-11-26 00:13:38,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:38,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:38,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:13:38,700 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992317741] [2022-11-26 00:13:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992317741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:38,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:38,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:13:38,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129056442] [2022-11-26 00:13:38,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:38,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-26 00:13:38,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:38,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-26 00:13:38,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:13:38,705 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:13:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:38,771 INFO L93 Difference]: Finished difference Result 73 states and 91 transitions. [2022-11-26 00:13:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-26 00:13:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-11-26 00:13:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:38,774 INFO L225 Difference]: With dead ends: 73 [2022-11-26 00:13:38,774 INFO L226 Difference]: Without dead ends: 71 [2022-11-26 00:13:38,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-26 00:13:38,776 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 1 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:38,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 32 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:13:38,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-11-26 00:13:38,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2022-11-26 00:13:38,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 56 states have internal predecessors, (68), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-26 00:13:38,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 83 transitions. [2022-11-26 00:13:38,804 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 83 transitions. Word has length 18 [2022-11-26 00:13:38,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:38,805 INFO L495 AbstractCegarLoop]: Abstraction has 71 states and 83 transitions. [2022-11-26 00:13:38,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:13:38,805 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 83 transitions. [2022-11-26 00:13:38,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-26 00:13:38,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:38,806 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-26 00:13:38,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:13:38,807 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:38,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:38,827 INFO L85 PathProgramCache]: Analyzing trace with hash -746184899, now seen corresponding path program 1 times [2022-11-26 00:13:38,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:38,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650150981] [2022-11-26 00:13:38,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:38,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:38,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:38,905 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:13:38,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:38,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650150981] [2022-11-26 00:13:38,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650150981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:13:38,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:13:38,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-26 00:13:38,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616880816] [2022-11-26 00:13:38,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:13:38,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:13:38,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:38,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:13:38,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:13:38,908 INFO L87 Difference]: Start difference. First operand 71 states and 83 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:13:38,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:38,922 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2022-11-26 00:13:38,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:13:38,923 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-26 00:13:38,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:38,924 INFO L225 Difference]: With dead ends: 71 [2022-11-26 00:13:38,924 INFO L226 Difference]: Without dead ends: 70 [2022-11-26 00:13:38,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:13:38,926 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 2 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:38,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 21 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-26 00:13:38,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-11-26 00:13:38,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2022-11-26 00:13:38,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 55 states have (on average 1.1454545454545455) internal successors, (63), 55 states have internal predecessors, (63), 6 states have call successors, (6), 5 states have call predecessors, (6), 7 states have return successors, (9), 9 states have call predecessors, (9), 5 states have call successors, (9) [2022-11-26 00:13:38,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2022-11-26 00:13:38,939 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 23 [2022-11-26 00:13:38,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:38,940 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2022-11-26 00:13:38,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-26 00:13:38,940 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2022-11-26 00:13:38,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-11-26 00:13:38,941 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:38,941 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1] [2022-11-26 00:13:38,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:13:38,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:38,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:38,943 INFO L85 PathProgramCache]: Analyzing trace with hash -107041484, now seen corresponding path program 2 times [2022-11-26 00:13:38,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:38,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438596634] [2022-11-26 00:13:38,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:38,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:39,217 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:39,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:39,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438596634] [2022-11-26 00:13:39,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438596634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:39,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565742020] [2022-11-26 00:13:39,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:13:39,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:39,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:39,220 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:39,231 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:13:39,294 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-11-26 00:13:39,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:13:39,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-26 00:13:39,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:39,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:39,687 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:39,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [565742020] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:39,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [943138684] [2022-11-26 00:13:39,689 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:13:39,689 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:39,690 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:13:39,691 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:39,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-26 00:13:39,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824380850] [2022-11-26 00:13:39,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:39,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-26 00:13:39,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:39,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-26 00:13:39,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=416, Unknown=0, NotChecked=0, Total=552 [2022-11-26 00:13:39,693 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:40,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:40,228 INFO L93 Difference]: Finished difference Result 187 states and 203 transitions. [2022-11-26 00:13:40,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-26 00:13:40,230 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-11-26 00:13:40,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:40,234 INFO L225 Difference]: With dead ends: 187 [2022-11-26 00:13:40,235 INFO L226 Difference]: Without dead ends: 155 [2022-11-26 00:13:40,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=389, Invalid=1017, Unknown=0, NotChecked=0, Total=1406 [2022-11-26 00:13:40,241 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 298 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:40,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 174 Invalid, 264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:13:40,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2022-11-26 00:13:40,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 145. [2022-11-26 00:13:40,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 115 states have (on average 1.1478260869565218) internal successors, (132), 115 states have internal predecessors, (132), 12 states have call successors, (12), 11 states have call predecessors, (12), 16 states have return successors, (18), 18 states have call predecessors, (18), 11 states have call successors, (18) [2022-11-26 00:13:40,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2022-11-26 00:13:40,281 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 25 [2022-11-26 00:13:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:40,281 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2022-11-26 00:13:40,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9047619047619047) internal successors, (40), 13 states have internal predecessors, (40), 10 states have call successors, (10), 10 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2022-11-26 00:13:40,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-26 00:13:40,283 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:40,283 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 5, 5, 5, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-26 00:13:40,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:40,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-26 00:13:40,496 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:40,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:40,496 INFO L85 PathProgramCache]: Analyzing trace with hash -506338079, now seen corresponding path program 1 times [2022-11-26 00:13:40,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:40,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600391627] [2022-11-26 00:13:40,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:40,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:40,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:40,642 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-26 00:13:40,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:40,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600391627] [2022-11-26 00:13:40,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600391627] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:40,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1349307338] [2022-11-26 00:13:40,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:40,644 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:40,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:40,647 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:40,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-26 00:13:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:40,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-26 00:13:40,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:40,962 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 60 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-26 00:13:40,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:41,415 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 3 proven. 61 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-26 00:13:41,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1349307338] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:41,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [77816452] [2022-11-26 00:13:41,418 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-26 00:13:41,419 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:41,419 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:13:41,420 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:41,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 14, 15] total 29 [2022-11-26 00:13:41,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388870920] [2022-11-26 00:13:41,421 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:41,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-26 00:13:41,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:41,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-26 00:13:41,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=676, Unknown=0, NotChecked=0, Total=812 [2022-11-26 00:13:41,424 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:13:42,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:42,107 INFO L93 Difference]: Finished difference Result 207 states and 226 transitions. [2022-11-26 00:13:42,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-26 00:13:42,108 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 39 [2022-11-26 00:13:42,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:42,110 INFO L225 Difference]: With dead ends: 207 [2022-11-26 00:13:42,110 INFO L226 Difference]: Without dead ends: 141 [2022-11-26 00:13:42,111 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 60 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 316 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=316, Invalid=1406, Unknown=0, NotChecked=0, Total=1722 [2022-11-26 00:13:42,112 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 160 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 391 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:42,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 378 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 391 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:13:42,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-11-26 00:13:42,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 133. [2022-11-26 00:13:42,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 106 states have (on average 1.1132075471698113) internal successors, (118), 105 states have internal predecessors, (118), 12 states have call successors, (12), 11 states have call predecessors, (12), 13 states have return successors, (16), 16 states have call predecessors, (16), 11 states have call successors, (16) [2022-11-26 00:13:42,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 146 transitions. [2022-11-26 00:13:42,129 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 146 transitions. Word has length 39 [2022-11-26 00:13:42,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:42,130 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 146 transitions. [2022-11-26 00:13:42,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 2.4814814814814814) internal successors, (67), 21 states have internal predecessors, (67), 13 states have call successors, (14), 9 states have call predecessors, (14), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2022-11-26 00:13:42,130 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 146 transitions. [2022-11-26 00:13:42,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-26 00:13:42,132 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:42,132 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 10, 10, 10, 1, 1, 1] [2022-11-26 00:13:42,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:42,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-26 00:13:42,338 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:42,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:42,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1797304428, now seen corresponding path program 3 times [2022-11-26 00:13:42,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:42,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972850924] [2022-11-26 00:13:42,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:42,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:42,907 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:42,908 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:42,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972850924] [2022-11-26 00:13:42,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972850924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:42,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049552967] [2022-11-26 00:13:42,908 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:13:42,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:42,909 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:42,911 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:42,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-26 00:13:42,979 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:13:42,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:13:42,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-26 00:13:42,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:43,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:43,867 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 0 proven. 255 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:43,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049552967] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:43,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1116751989] [2022-11-26 00:13:43,870 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:13:43,870 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:43,870 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:13:43,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:43,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 46 [2022-11-26 00:13:43,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979162] [2022-11-26 00:13:43,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:43,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-11-26 00:13:43,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:43,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-11-26 00:13:43,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=556, Invalid=1700, Unknown=0, NotChecked=0, Total=2256 [2022-11-26 00:13:43,875 INFO L87 Difference]: Start difference. First operand 133 states and 146 transitions. Second operand has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:45,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:45,302 INFO L93 Difference]: Finished difference Result 437 states and 469 transitions. [2022-11-26 00:13:45,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-26 00:13:45,303 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-11-26 00:13:45,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:45,306 INFO L225 Difference]: With dead ends: 437 [2022-11-26 00:13:45,306 INFO L226 Difference]: Without dead ends: 385 [2022-11-26 00:13:45,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1269 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1742, Invalid=4578, Unknown=0, NotChecked=0, Total=6320 [2022-11-26 00:13:45,312 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 627 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:45,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 443 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-26 00:13:45,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2022-11-26 00:13:45,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 363. [2022-11-26 00:13:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 363 states, 290 states have (on average 1.1206896551724137) internal successors, (325), 289 states have internal predecessors, (325), 24 states have call successors, (24), 23 states have call predecessors, (24), 47 states have return successors, (50), 50 states have call predecessors, (50), 23 states have call successors, (50) [2022-11-26 00:13:45,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 399 transitions. [2022-11-26 00:13:45,346 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 399 transitions. Word has length 55 [2022-11-26 00:13:45,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:45,347 INFO L495 AbstractCegarLoop]: Abstraction has 363 states and 399 transitions. [2022-11-26 00:13:45,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 45 states have (on average 1.9555555555555555) internal successors, (88), 25 states have internal predecessors, (88), 22 states have call successors, (22), 22 states have call predecessors, (22), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 399 transitions. [2022-11-26 00:13:45,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-26 00:13:45,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:45,350 INFO L195 NwaCegarLoop]: trace histogram [12, 11, 11, 11, 11, 3, 3, 3, 3, 2, 1, 1, 1, 1] [2022-11-26 00:13:45,362 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:45,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:45,557 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1875709708, now seen corresponding path program 2 times [2022-11-26 00:13:45,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:45,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471499298] [2022-11-26 00:13:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:45,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:45,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 6 proven. 297 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:13:46,119 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471499298] [2022-11-26 00:13:46,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471499298] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:46,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11577023] [2022-11-26 00:13:46,119 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:13:46,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:46,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:46,121 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:46,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-26 00:13:46,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-26 00:13:46,192 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:13:46,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-26 00:13:46,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-26 00:13:46,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:46,688 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2022-11-26 00:13:46,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11577023] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:46,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [579440768] [2022-11-26 00:13:46,694 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-26 00:13:46,694 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:46,696 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:13:46,697 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:46,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 7, 7] total 37 [2022-11-26 00:13:46,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004584266] [2022-11-26 00:13:46,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:46,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-26 00:13:46,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-26 00:13:46,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=1156, Unknown=0, NotChecked=0, Total=1332 [2022-11-26 00:13:46,703 INFO L87 Difference]: Start difference. First operand 363 states and 399 transitions. Second operand has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-26 00:13:48,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:48,002 INFO L93 Difference]: Finished difference Result 720 states and 820 transitions. [2022-11-26 00:13:48,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-26 00:13:48,003 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) Word has length 74 [2022-11-26 00:13:48,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:48,008 INFO L225 Difference]: With dead ends: 720 [2022-11-26 00:13:48,008 INFO L226 Difference]: Without dead ends: 664 [2022-11-26 00:13:48,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 918 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=561, Invalid=3995, Unknown=0, NotChecked=0, Total=4556 [2022-11-26 00:13:48,012 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 295 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:48,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 350 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:13:48,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2022-11-26 00:13:48,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 655. [2022-11-26 00:13:48,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 526 states have (on average 1.064638783269962) internal successors, (560), 521 states have internal predecessors, (560), 24 states have call successors, (24), 23 states have call predecessors, (24), 103 states have return successors, (110), 110 states have call predecessors, (110), 23 states have call successors, (110) [2022-11-26 00:13:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 694 transitions. [2022-11-26 00:13:48,052 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 694 transitions. Word has length 74 [2022-11-26 00:13:48,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:48,052 INFO L495 AbstractCegarLoop]: Abstraction has 655 states and 694 transitions. [2022-11-26 00:13:48,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 2.361111111111111) internal successors, (85), 28 states have internal predecessors, (85), 12 states have call successors, (13), 10 states have call predecessors, (13), 9 states have return successors, (9), 9 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-26 00:13:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 694 transitions. [2022-11-26 00:13:48,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-26 00:13:48,057 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:48,057 INFO L195 NwaCegarLoop]: trace histogram [13, 12, 12, 12, 12, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-11-26 00:13:48,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:48,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:48,264 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:48,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:48,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1873920279, now seen corresponding path program 3 times [2022-11-26 00:13:48,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:48,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372163792] [2022-11-26 00:13:48,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:48,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:49,019 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-26 00:13:49,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:49,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372163792] [2022-11-26 00:13:49,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372163792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:49,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427843328] [2022-11-26 00:13:49,020 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:13:49,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:49,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:49,021 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:49,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-26 00:13:49,108 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:13:49,109 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:13:49,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-26 00:13:49,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:49,299 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 354 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-11-26 00:13:49,299 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:51,781 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 18 proven. 420 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-26 00:13:51,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427843328] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:51,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [132313601] [2022-11-26 00:13:51,784 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-26 00:13:51,784 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:51,784 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:13:51,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:51,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 29] total 43 [2022-11-26 00:13:51,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262182439] [2022-11-26 00:13:51,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:51,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-11-26 00:13:51,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:51,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-11-26 00:13:51,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=1450, Unknown=0, NotChecked=0, Total=1806 [2022-11-26 00:13:51,788 INFO L87 Difference]: Start difference. First operand 655 states and 694 transitions. Second operand has 43 states, 41 states have (on average 2.658536585365854) internal successors, (109), 30 states have internal predecessors, (109), 21 states have call successors, (21), 13 states have call predecessors, (21), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-26 00:13:52,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:52,580 INFO L93 Difference]: Finished difference Result 748 states and 786 transitions. [2022-11-26 00:13:52,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-26 00:13:52,581 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.658536585365854) internal successors, (109), 30 states have internal predecessors, (109), 21 states have call successors, (21), 13 states have call predecessors, (21), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) Word has length 99 [2022-11-26 00:13:52,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:52,584 INFO L225 Difference]: With dead ends: 748 [2022-11-26 00:13:52,585 INFO L226 Difference]: Without dead ends: 477 [2022-11-26 00:13:52,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 177 SyntacticMatches, 7 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 927 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=817, Invalid=2965, Unknown=0, NotChecked=0, Total=3782 [2022-11-26 00:13:52,589 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 348 mSDsluCounter, 547 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:52,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 612 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:13:52,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-11-26 00:13:52,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 445. [2022-11-26 00:13:52,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 358 states have (on average 1.0754189944134078) internal successors, (385), 353 states have internal predecessors, (385), 24 states have call successors, (24), 23 states have call predecessors, (24), 61 states have return successors, (68), 68 states have call predecessors, (68), 23 states have call successors, (68) [2022-11-26 00:13:52,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 477 transitions. [2022-11-26 00:13:52,613 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 477 transitions. Word has length 99 [2022-11-26 00:13:52,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:52,614 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 477 transitions. [2022-11-26 00:13:52,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.658536585365854) internal successors, (109), 30 states have internal predecessors, (109), 21 states have call successors, (21), 13 states have call predecessors, (21), 7 states have return successors, (14), 7 states have call predecessors, (14), 9 states have call successors, (14) [2022-11-26 00:13:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 477 transitions. [2022-11-26 00:13:52,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-26 00:13:52,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:52,617 INFO L195 NwaCegarLoop]: trace histogram [23, 23, 22, 22, 22, 1, 1, 1] [2022-11-26 00:13:52,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:52,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-26 00:13:52,829 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:52,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:52,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1122935724, now seen corresponding path program 4 times [2022-11-26 00:13:52,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:52,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446195367] [2022-11-26 00:13:52,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:52,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:52,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:54,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:54,382 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446195367] [2022-11-26 00:13:54,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446195367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:54,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310685295] [2022-11-26 00:13:54,383 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:13:54,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:54,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:54,384 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:54,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-26 00:13:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:54,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 48 conjunts are in the unsatisfiable core [2022-11-26 00:13:54,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:54,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:54,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:13:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 1221 backedges. 0 proven. 1221 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:13:57,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310685295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:13:57,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1349416107] [2022-11-26 00:13:57,199 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2022-11-26 00:13:57,200 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:13:57,200 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:13:57,201 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:13:57,201 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 94 [2022-11-26 00:13:57,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631355189] [2022-11-26 00:13:57,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:13:57,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2022-11-26 00:13:57,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:13:57,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2022-11-26 00:13:57,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2260, Invalid=6860, Unknown=0, NotChecked=0, Total=9120 [2022-11-26 00:13:57,208 INFO L87 Difference]: Start difference. First operand 445 states and 477 transitions. Second operand has 96 states, 93 states have (on average 1.978494623655914) internal successors, (184), 49 states have internal predecessors, (184), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:58,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:13:58,286 INFO L93 Difference]: Finished difference Result 531 states and 554 transitions. [2022-11-26 00:13:58,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-26 00:13:58,287 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 93 states have (on average 1.978494623655914) internal successors, (184), 49 states have internal predecessors, (184), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 115 [2022-11-26 00:13:58,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:13:58,294 INFO L225 Difference]: With dead ends: 531 [2022-11-26 00:13:58,294 INFO L226 Difference]: Without dead ends: 434 [2022-11-26 00:13:58,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2873 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=4100, Invalid=9706, Unknown=0, NotChecked=0, Total=13806 [2022-11-26 00:13:58,304 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 581 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:13:58,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [581 Valid, 745 Invalid, 589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:13:58,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-11-26 00:13:58,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 414. [2022-11-26 00:13:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 334 states have (on average 1.0748502994011977) internal successors, (359), 328 states have internal predecessors, (359), 24 states have call successors, (24), 23 states have call predecessors, (24), 55 states have return successors, (62), 62 states have call predecessors, (62), 23 states have call successors, (62) [2022-11-26 00:13:58,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 445 transitions. [2022-11-26 00:13:58,335 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 445 transitions. Word has length 115 [2022-11-26 00:13:58,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:13:58,337 INFO L495 AbstractCegarLoop]: Abstraction has 414 states and 445 transitions. [2022-11-26 00:13:58,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 93 states have (on average 1.978494623655914) internal successors, (184), 49 states have internal predecessors, (184), 46 states have call successors, (46), 46 states have call predecessors, (46), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:13:58,338 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 445 transitions. [2022-11-26 00:13:58,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-26 00:13:58,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:13:58,346 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 7, 7, 7, 7, 6, 1, 1, 1, 1] [2022-11-26 00:13:58,360 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-26 00:13:58,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:58,559 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:13:58,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:13:58,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1616926313, now seen corresponding path program 4 times [2022-11-26 00:13:58,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:13:58,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441868097] [2022-11-26 00:13:58,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:13:58,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:13:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-11-26 00:13:58,879 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:13:58,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441868097] [2022-11-26 00:13:58,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441868097] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:13:58,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319201356] [2022-11-26 00:13:58,880 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-26 00:13:58,880 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:13:58,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:13:58,881 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:13:58,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-26 00:13:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:13:59,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-26 00:13:59,071 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:13:59,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-11-26 00:13:59,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:14:00,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1095 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-11-26 00:14:00,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319201356] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:14:00,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [215009892] [2022-11-26 00:14:00,896 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-26 00:14:00,897 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:14:00,898 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:14:00,900 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:14:00,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 31 [2022-11-26 00:14:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165743234] [2022-11-26 00:14:00,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:14:00,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-26 00:14:00,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:14:00,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-26 00:14:00,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:14:00,905 INFO L87 Difference]: Start difference. First operand 414 states and 445 transitions. Second operand has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-26 00:14:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:14:01,023 INFO L93 Difference]: Finished difference Result 939 states and 1085 transitions. [2022-11-26 00:14:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-26 00:14:01,024 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) Word has length 139 [2022-11-26 00:14:01,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:14:01,029 INFO L225 Difference]: With dead ends: 939 [2022-11-26 00:14:01,030 INFO L226 Difference]: Without dead ends: 938 [2022-11-26 00:14:01,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 295 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=271, Invalid=721, Unknown=0, NotChecked=0, Total=992 [2022-11-26 00:14:01,031 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:14:01,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:14:01,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2022-11-26 00:14:01,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 938. [2022-11-26 00:14:01,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 938 states, 758 states have (on average 1.0329815303430079) internal successors, (783), 744 states have internal predecessors, (783), 24 states have call successors, (24), 23 states have call predecessors, (24), 155 states have return successors, (170), 170 states have call predecessors, (170), 23 states have call successors, (170) [2022-11-26 00:14:01,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 938 states to 938 states and 977 transitions. [2022-11-26 00:14:01,076 INFO L78 Accepts]: Start accepts. Automaton has 938 states and 977 transitions. Word has length 139 [2022-11-26 00:14:01,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:14:01,076 INFO L495 AbstractCegarLoop]: Abstraction has 938 states and 977 transitions. [2022-11-26 00:14:01,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 2.193548387096774) internal successors, (68), 32 states have internal predecessors, (68), 1 states have call successors, (2), 1 states have call predecessors, (2), 15 states have return successors, (15), 15 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-26 00:14:01,077 INFO L276 IsEmpty]: Start isEmpty. Operand 938 states and 977 transitions. [2022-11-26 00:14:01,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-26 00:14:01,082 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:14:01,082 INFO L195 NwaCegarLoop]: trace histogram [21, 20, 20, 20, 20, 15, 15, 15, 15, 14, 1, 1, 1, 1] [2022-11-26 00:14:01,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-26 00:14:01,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-26 00:14:01,288 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:14:01,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:14:01,289 INFO L85 PathProgramCache]: Analyzing trace with hash 91384599, now seen corresponding path program 5 times [2022-11-26 00:14:01,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:14:01,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274213526] [2022-11-26 00:14:01,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:14:01,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:14:01,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:14:02,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-11-26 00:14:02,226 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:14:02,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274213526] [2022-11-26 00:14:02,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274213526] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:14:02,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955146037] [2022-11-26 00:14:02,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-26 00:14:02,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:14:02,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:14:02,228 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:14:02,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-26 00:14:02,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2022-11-26 00:14:02,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:14:02,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-26 00:14:02,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:14:02,575 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-11-26 00:14:02,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:14:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 1515 backedges. 0 proven. 525 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2022-11-26 00:14:15,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955146037] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:14:15,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [208398448] [2022-11-26 00:14:15,405 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-26 00:14:15,405 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:14:15,405 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:14:15,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:14:15,407 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 63 [2022-11-26 00:14:15,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127504895] [2022-11-26 00:14:15,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:14:15,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-26 00:14:15,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:14:15,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-26 00:14:15,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-11-26 00:14:15,411 INFO L87 Difference]: Start difference. First operand 938 states and 977 transitions. Second operand has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-26 00:14:15,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:14:15,650 INFO L93 Difference]: Finished difference Result 2672 states and 3068 transitions. [2022-11-26 00:14:15,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-11-26 00:14:15,651 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) Word has length 179 [2022-11-26 00:14:15,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:14:15,658 INFO L225 Difference]: With dead ends: 2672 [2022-11-26 00:14:15,658 INFO L226 Difference]: Without dead ends: 1494 [2022-11-26 00:14:15,662 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 387 GetRequests, 325 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1239 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1055, Invalid=2977, Unknown=0, NotChecked=0, Total=4032 [2022-11-26 00:14:15,663 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 0 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:14:15,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 108 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:14:15,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1494 states. [2022-11-26 00:14:15,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1494 to 1494. [2022-11-26 00:14:15,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1494 states, 1207 states have (on average 1.0190555095277547) internal successors, (1230), 1186 states have internal predecessors, (1230), 24 states have call successors, (24), 23 states have call predecessors, (24), 262 states have return successors, (284), 284 states have call predecessors, (284), 23 states have call successors, (284) [2022-11-26 00:14:15,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1494 states to 1494 states and 1538 transitions. [2022-11-26 00:14:15,721 INFO L78 Accepts]: Start accepts. Automaton has 1494 states and 1538 transitions. Word has length 179 [2022-11-26 00:14:15,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:14:15,722 INFO L495 AbstractCegarLoop]: Abstraction has 1494 states and 1538 transitions. [2022-11-26 00:14:15,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 2.0952380952380953) internal successors, (132), 64 states have internal predecessors, (132), 1 states have call successors, (2), 1 states have call predecessors, (2), 31 states have return successors, (31), 31 states have call predecessors, (31), 1 states have call successors, (31) [2022-11-26 00:14:15,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1494 states and 1538 transitions. [2022-11-26 00:14:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2022-11-26 00:14:15,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:14:15,734 INFO L195 NwaCegarLoop]: trace histogram [55, 54, 54, 54, 54, 31, 31, 31, 31, 30, 1, 1, 1, 1] [2022-11-26 00:14:15,743 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-26 00:14:15,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-26 00:14:15,941 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW] === [2022-11-26 00:14:15,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:14:15,941 INFO L85 PathProgramCache]: Analyzing trace with hash 669926967, now seen corresponding path program 6 times [2022-11-26 00:14:15,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:14:15,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043395789] [2022-11-26 00:14:15,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:14:15,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:14:16,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:14:20,239 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 0 proven. 2325 refuted. 0 times theorem prover too weak. 7263 trivial. 0 not checked. [2022-11-26 00:14:20,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:14:20,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043395789] [2022-11-26 00:14:20,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043395789] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:14:20,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406949985] [2022-11-26 00:14:20,240 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-26 00:14:20,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:14:20,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:14:20,241 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:14:20,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-26 00:14:20,672 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-26 00:14:20,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-26 00:14:20,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 800 conjuncts, 112 conjunts are in the unsatisfiable core [2022-11-26 00:14:20,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:14:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 3648 refuted. 0 times theorem prover too weak. 2235 trivial. 0 not checked. [2022-11-26 00:14:25,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:16:55,908 INFO L134 CoverageAnalysis]: Checked inductivity of 9588 backedges. 3705 proven. 5418 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2022-11-26 00:16:55,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406949985] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:16:55,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1179196323] [2022-11-26 00:16:55,910 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-26 00:16:55,910 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:16:55,911 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:337) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-26 00:16:55,911 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:16:55,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 83, 113] total 225 [2022-11-26 00:16:55,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716276382] [2022-11-26 00:16:55,912 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-26 00:16:55,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 225 states [2022-11-26 00:16:55,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:16:55,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 225 interpolants. [2022-11-26 00:16:55,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5139, Invalid=45261, Unknown=0, NotChecked=0, Total=50400 [2022-11-26 00:16:55,928 INFO L87 Difference]: Start difference. First operand 1494 states and 1538 transitions. Second operand has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-11-26 00:16:59,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:16:59,034 INFO L93 Difference]: Finished difference Result 1494 states and 1538 transitions. [2022-11-26 00:16:59,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-11-26 00:16:59,036 INFO L78 Accepts]: Start accepts. Automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) Word has length 429 [2022-11-26 00:16:59,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:16:59,037 INFO L225 Difference]: With dead ends: 1494 [2022-11-26 00:16:59,037 INFO L226 Difference]: Without dead ends: 0 [2022-11-26 00:16:59,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 943 GetRequests, 665 SyntacticMatches, 31 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28719 ImplicationChecksByTransitivity, 15.7s TimeCoverageRelationStatistics Valid=7982, Invalid=53770, Unknown=0, NotChecked=0, Total=61752 [2022-11-26 00:16:59,048 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 100 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3062 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-26 00:16:59,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 24 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3062 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-26 00:16:59,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-26 00:16:59,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-26 00:16:59,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-26 00:16:59,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-26 00:16:59,050 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 429 [2022-11-26 00:16:59,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:16:59,051 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-26 00:16:59,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 225 states, 223 states have (on average 2.57847533632287) internal successors, (575), 177 states have internal predecessors, (575), 82 states have call successors, (83), 49 states have call predecessors, (83), 62 states have return successors, (93), 62 states have call predecessors, (93), 34 states have call successors, (93) [2022-11-26 00:16:59,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-26 00:16:59,052 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-26 00:16:59,055 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-11-26 00:16:59,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-11-26 00:16:59,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-11-26 00:16:59,056 INFO L805 garLoopResultBuilder]: Registering result SAFE for location idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-11-26 00:16:59,067 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-26 00:16:59,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:16:59,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-26 00:17:00,379 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-26 00:17:00,379 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-26 00:17:00,379 INFO L895 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (and (<= 20 |ULTIMATE.start_main_~input~0#1|) (<= |ULTIMATE.start_main_~input~0#1| 20)) [2022-11-26 00:17:00,379 INFO L899 garLoopResultBuilder]: For program point L13-1(line 13) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point idFINAL(lines 6 9) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point idEXIT(lines 6 9) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L902 garLoopResultBuilder]: At program point idENTRY(lines 6 9) the Hoare annotation is: true [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point L8(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,380 INFO L899 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-11-26 00:17:00,381 INFO L899 garLoopResultBuilder]: For program point L8-1(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,381 INFO L895 garLoopResultBuilder]: At program point L8-2(line 8) the Hoare annotation is: (let ((.cse1 (<= id_~x |id_#in~x|)) (.cse0 (not (<= |id_#in~x| 20))) (.cse2 (<= |id_#in~x| id_~x))) (and (or (not (<= 9 |id_#in~x|)) .cse0 (<= 9 id_~x)) (or (not (<= |id_#in~x| 7)) (<= 7 id_~x) (not (<= 7 |id_#in~x|))) (or (not (<= |id_#in~x| 1)) (and .cse1 (<= 1 id_~x)) (not (<= 1 |id_#in~x|))) (or (not (<= |id_#in~x| 0)) (not (<= 0 |id_#in~x|))) (or (not (<= 2 |id_#in~x|)) (and .cse1 .cse2) (not (<= |id_#in~x| 2))) (or (and .cse1 (<= 4 id_~x)) (not (<= 4 |id_#in~x|)) .cse0) (or (<= 11 id_~x) (not (<= 11 |id_#in~x|)) (not (<= |id_#in~x| 11))) (or (not (<= 8 |id_#in~x|)) (not (<= |id_#in~x| 8)) (<= 8 id_~x)) (or (and .cse1 (<= 3 id_~x)) (not (<= 3 |id_#in~x|)) (not (<= |id_#in~x| 3))) (or (not (<= 13 |id_#in~x|)) (<= 13 id_~x) (not (<= |id_#in~x| 13))) (or .cse2 .cse0 (not (<= 18 |id_#in~x|))) (or (not (<= 10 |id_#in~x|)) (<= 10 id_~x) (not (<= |id_#in~x| 10))) (or (not (<= 16 |id_#in~x|)) .cse0 (<= 16 id_~x)) (or .cse2 (not (<= |id_#in~x| 14)) (not (<= 14 |id_#in~x|))) (or (not (<= |id_#in~x| 17)) (not (<= 17 |id_#in~x|)) (<= 17 id_~x)) (or (<= 12 id_~x) (not (<= |id_#in~x| 12)) (not (<= 12 |id_#in~x|))) (or (not (<= 5 |id_#in~x|)) (not (<= |id_#in~x| 5)) (<= 5 id_~x)) (or (<= 6 id_~x) (not (<= |id_#in~x| 6)) (not (<= 6 |id_#in~x|))) (or (<= 15 id_~x) (not (<= |id_#in~x| 15)) (not (<= 15 |id_#in~x|))))) [2022-11-26 00:17:00,382 INFO L899 garLoopResultBuilder]: For program point L8-3(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,382 INFO L899 garLoopResultBuilder]: For program point L8-4(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,382 INFO L899 garLoopResultBuilder]: For program point L8-5(line 8) no Hoare annotation was computed. [2022-11-26 00:17:00,386 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 1, 1, 1, 1] [2022-11-26 00:17:00,388 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-26 00:17:00,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 12:17:00 BoogieIcfgContainer [2022-11-26 00:17:00,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-26 00:17:00,393 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-26 00:17:00,393 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-26 00:17:00,393 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-26 00:17:00,394 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:13:36" (3/4) ... [2022-11-26 00:17:00,397 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-26 00:17:00,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2022-11-26 00:17:00,407 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2022-11-26 00:17:00,408 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-26 00:17:00,408 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2022-11-26 00:17:00,408 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-26 00:17:00,440 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/witness.graphml [2022-11-26 00:17:00,440 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-26 00:17:00,440 INFO L158 Benchmark]: Toolchain (without parser) took 204443.66ms. Allocated memory was 159.4MB in the beginning and 587.2MB in the end (delta: 427.8MB). Free memory was 123.1MB in the beginning and 266.8MB in the end (delta: -143.7MB). Peak memory consumption was 282.5MB. Max. memory is 16.1GB. [2022-11-26 00:17:00,441 INFO L158 Benchmark]: CDTParser took 0.79ms. Allocated memory is still 121.6MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:17:00,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 298.54ms. Allocated memory is still 159.4MB. Free memory was 122.7MB in the beginning and 125.6MB in the end (delta: -2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-26 00:17:00,441 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.32ms. Allocated memory is still 159.4MB. Free memory was 125.6MB in the beginning and 124.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:17:00,442 INFO L158 Benchmark]: Boogie Preprocessor took 27.90ms. Allocated memory is still 159.4MB. Free memory was 124.1MB in the beginning and 123.3MB in the end (delta: 790.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-26 00:17:00,442 INFO L158 Benchmark]: RCFGBuilder took 373.46ms. Allocated memory is still 159.4MB. Free memory was 123.3MB in the beginning and 112.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-26 00:17:00,443 INFO L158 Benchmark]: TraceAbstraction took 203647.73ms. Allocated memory was 159.4MB in the beginning and 587.2MB in the end (delta: 427.8MB). Free memory was 112.3MB in the beginning and 268.9MB in the end (delta: -156.6MB). Peak memory consumption was 271.6MB. Max. memory is 16.1GB. [2022-11-26 00:17:00,443 INFO L158 Benchmark]: Witness Printer took 47.20ms. Allocated memory is still 587.2MB. Free memory was 268.9MB in the beginning and 266.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-26 00:17:00,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.79ms. Allocated memory is still 121.6MB. Free memory is still 89.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 298.54ms. Allocated memory is still 159.4MB. Free memory was 122.7MB in the beginning and 125.6MB in the end (delta: -2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.32ms. Allocated memory is still 159.4MB. Free memory was 125.6MB in the beginning and 124.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.90ms. Allocated memory is still 159.4MB. Free memory was 124.1MB in the beginning and 123.3MB in the end (delta: 790.5kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 373.46ms. Allocated memory is still 159.4MB. Free memory was 123.3MB in the beginning and 112.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 203647.73ms. Allocated memory was 159.4MB in the beginning and 587.2MB in the end (delta: 427.8MB). Free memory was 112.3MB in the beginning and 268.9MB in the end (delta: -156.6MB). Peak memory consumption was 271.6MB. Max. memory is 16.1GB. * Witness Printer took 47.20ms. Allocated memory is still 587.2MB. Free memory was 268.9MB in the beginning and 266.8MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 8]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 203.6s, OverallIterations: 14, TraceHistogramMax: 55, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.1s, AutomataDifference: 10.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2605 SdHoareTripleChecker+Valid, 4.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2580 mSDsluCounter, 3082 SdHoareTripleChecker+Invalid, 3.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2664 mSDsCounter, 686 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5753 IncrementalHoareTripleChecker+Invalid, 6439 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 686 mSolverCounterUnsat, 418 mSDtfsCounter, 5753 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2754 GetRequests, 1953 SyntacticMatches, 40 SemanticMatches, 761 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36817 ImplicationChecksByTransitivity, 26.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1494occurred in iteration=13, InterpolantAutomatonStates: 412, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 14 MinimizatonAttempts, 116 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 49 PreInvPairs, 49 NumberOfFragments, 250 HoareAnnotationTreeSize, 49 FomulaSimplifications, 665 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 1164 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 187.7s InterpolantComputationTime, 2380 NumberOfCodeBlocks, 2305 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3510 ConstructedInterpolants, 0 QuantifiedInterpolants, 9237 SizeOfPredicates, 115 NumberOfNonLiveVariables, 2231 ConjunctsInSsa, 297 ConjunctsInUnsatCore, 34 InterpolantComputations, 4 PerfectInterpolantSequences, 24262/43687 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-26 00:17:00,489 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a17eb5b0-74a4-42cc-9ab6-fa9de9ac37a9/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE