./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS --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 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 --- 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-8393723 [2022-11-19 08:04:26,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 08:04:26,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 08:04:26,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 08:04:26,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 08:04:26,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 08:04:26,930 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 08:04:26,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 08:04:26,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 08:04:26,934 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 08:04:26,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 08:04:26,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 08:04:26,937 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 08:04:26,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 08:04:26,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 08:04:26,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 08:04:26,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 08:04:26,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 08:04:26,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 08:04:26,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 08:04:26,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 08:04:26,948 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 08:04:26,949 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 08:04:26,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 08:04:26,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 08:04:26,954 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 08:04:26,954 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 08:04:26,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 08:04:26,955 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 08:04:26,956 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 08:04:26,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 08:04:26,957 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 08:04:26,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 08:04:26,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 08:04:26,960 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 08:04:26,960 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 08:04:26,961 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 08:04:26,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 08:04:26,962 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 08:04:26,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 08:04:26,963 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 08:04:26,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/config/svcomp-Overflow-32bit-Taipan_Default.epf [2022-11-19 08:04:26,986 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 08:04:26,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 08:04:26,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 08:04:26,987 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 08:04:26,988 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 08:04:26,988 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 08:04:26,988 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 08:04:26,988 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 08:04:26,989 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 08:04:26,989 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 08:04:26,989 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 08:04:26,989 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 08:04:26,989 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 08:04:26,989 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 08:04:26,990 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 08:04:26,990 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 08:04:26,990 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 08:04:26,990 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 08:04:26,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 08:04:26,991 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 08:04:26,991 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 08:04:26,991 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 08:04:26,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 08:04:26,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 08:04:26,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 08:04:26,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 08:04:26,992 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 08:04:26,992 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-19 08:04:26,993 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 08:04:26,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 08:04:26,993 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 08:04:26,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 08:04:26,993 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 08:04:26,994 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 08:04:26,994 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:04:26,994 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 08:04:26,994 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 08:04:26,994 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 08:04:26,995 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 08:04:26,995 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 08:04:26,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 08:04:26,995 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 08:04:26,995 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 08:04:26,995 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_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9c0fb6a0d32b99c9a776859d2bc15d9177dc584955a2c1baa8ac133e976f40f7 [2022-11-19 08:04:27,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 08:04:27,314 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 08:04:27,317 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 08:04:27,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 08:04:27,319 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 08:04:27,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2022-11-19 08:04:27,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/data/b06f4e901/a5df377b70d142f3907b8518c4912e59/FLAG34e42c7c4 [2022-11-19 08:04:27,871 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 08:04:27,871 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2022-11-19 08:04:27,877 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/data/b06f4e901/a5df377b70d142f3907b8518c4912e59/FLAG34e42c7c4 [2022-11-19 08:04:28,240 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/data/b06f4e901/a5df377b70d142f3907b8518c4912e59 [2022-11-19 08:04:28,242 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 08:04:28,244 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 08:04:28,246 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 08:04:28,246 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 08:04:28,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 08:04:28,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,252 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1958eeff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28, skipping insertion in model container [2022-11-19 08:04:28,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 08:04:28,274 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 08:04:28,477 WARN L234 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_83565ece-7086-40ba-8beb-e0ad12e45414/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2022-11-19 08:04:28,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:04:28,486 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 08:04:28,500 WARN L234 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_83565ece-7086-40ba-8beb-e0ad12e45414/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c[548,561] [2022-11-19 08:04:28,501 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 08:04:28,513 INFO L208 MainTranslator]: Completed translation [2022-11-19 08:04:28,514 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28 WrapperNode [2022-11-19 08:04:28,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 08:04:28,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 08:04:28,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 08:04:28,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 08:04:28,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,528 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,543 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 19 [2022-11-19 08:04:28,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 08:04:28,543 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 08:04:28,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 08:04:28,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 08:04:28,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,553 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,553 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,558 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 08:04:28,560 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 08:04:28,560 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 08:04:28,560 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 08:04:28,561 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (1/1) ... [2022-11-19 08:04:28,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 08:04:28,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:28,612 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 08:04:28,623 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 08:04:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 08:04:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 08:04:28,665 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2022-11-19 08:04:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2022-11-19 08:04:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 08:04:28,666 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 08:04:28,666 INFO L130 BoogieDeclarations]: Found specification of procedure id [2022-11-19 08:04:28,667 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2022-11-19 08:04:28,747 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 08:04:28,750 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 08:04:28,947 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 08:04:28,982 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 08:04:28,984 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 08:04:28,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:28 BoogieIcfgContainer [2022-11-19 08:04:28,997 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 08:04:28,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 08:04:29,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 08:04:29,020 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 08:04:29,020 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 08:04:28" (1/3) ... [2022-11-19 08:04:29,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32579a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:29, skipping insertion in model container [2022-11-19 08:04:29,021 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 08:04:28" (2/3) ... [2022-11-19 08:04:29,021 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32579a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 08:04:29, skipping insertion in model container [2022-11-19 08:04:29,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 08:04:28" (3/3) ... [2022-11-19 08:04:29,023 INFO L112 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2022-11-19 08:04:29,049 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 08:04:29,050 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2022-11-19 08:04:29,105 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 08:04:29,112 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;@2d006d08, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 08:04:29,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-19 08:04:29,123 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:04:29,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-19 08:04:29,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:29,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-19 08:04:29,134 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting idErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:29,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:29,138 INFO L85 PathProgramCache]: Analyzing trace with hash 79989956, now seen corresponding path program 1 times [2022-11-19 08:04:29,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:29,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355577640] [2022-11-19 08:04:29,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:29,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:29,384 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:29,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355577640] [2022-11-19 08:04:29,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355577640] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:29,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:29,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:29,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727077888] [2022-11-19 08:04:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:29,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:29,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:29,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:29,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:29,425 INFO L87 Difference]: Start difference. First operand has 32 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 26 states have internal predecessors, (28), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2022-11-19 08:04:29,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:29,527 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2022-11-19 08:04:29,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:29,530 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 [2022-11-19 08:04:29,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:29,538 INFO L225 Difference]: With dead ends: 48 [2022-11-19 08:04:29,538 INFO L226 Difference]: Without dead ends: 43 [2022-11-19 08:04:29,541 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 [2022-11-19 08:04:29,544 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 24 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:29,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 99 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:04:29,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-19 08:04:29,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2022-11-19 08:04:29,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.5) internal successors, (36), 31 states have internal predecessors, (36), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:04:29,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2022-11-19 08:04:29,583 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 5 [2022-11-19 08:04:29,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:29,584 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2022-11-19 08:04:29,584 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) [2022-11-19 08:04:29,584 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2022-11-19 08:04:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 08:04:29,585 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:29,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 08:04:29,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 08:04:29,586 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:29,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:29,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1815278591, now seen corresponding path program 1 times [2022-11-19 08:04:29,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:29,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299079815] [2022-11-19 08:04:29,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:29,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:29,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:29,649 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:29,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299079815] [2022-11-19 08:04:29,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299079815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:29,651 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:29,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:29,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421013613] [2022-11-19 08:04:29,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:29,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 08:04:29,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:29,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 08:04:29,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 08:04:29,655 INFO L87 Difference]: Start difference. First operand 38 states and 43 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) [2022-11-19 08:04:29,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:29,727 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2022-11-19 08:04:29,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:29,728 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 [2022-11-19 08:04:29,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:29,729 INFO L225 Difference]: With dead ends: 41 [2022-11-19 08:04:29,731 INFO L226 Difference]: Without dead ends: 40 [2022-11-19 08:04:29,731 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 [2022-11-19 08:04:29,733 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 13 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:29,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 103 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:04:29,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-11-19 08:04:29,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2022-11-19 08:04:29,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 31 states have internal predecessors, (35), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:04:29,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2022-11-19 08:04:29,751 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 6 [2022-11-19 08:04:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:29,751 INFO L495 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2022-11-19 08:04:29,753 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) [2022-11-19 08:04:29,753 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2022-11-19 08:04:29,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-19 08:04:29,754 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:29,754 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:29,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 08:04:29,755 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:29,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1902482832, now seen corresponding path program 1 times [2022-11-19 08:04:29,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:29,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642658115] [2022-11-19 08:04:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:29,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:29,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:29,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:29,877 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:29,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642658115] [2022-11-19 08:04:29,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642658115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:29,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:29,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:29,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180132537] [2022-11-19 08:04:29,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:29,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:04:29,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:29,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:04:29,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:04:29,880 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:29,957 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2022-11-19 08:04:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:04:29,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-19 08:04:29,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:29,958 INFO L225 Difference]: With dead ends: 38 [2022-11-19 08:04:29,958 INFO L226 Difference]: Without dead ends: 36 [2022-11-19 08:04:29,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:04:29,960 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 42 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:29,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 51 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:04:29,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2022-11-19 08:04:29,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2022-11-19 08:04:29,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 24 states have (on average 1.375) internal successors, (33), 29 states have internal predecessors, (33), 4 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-19 08:04:29,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2022-11-19 08:04:29,968 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 10 [2022-11-19 08:04:29,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:29,968 INFO L495 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2022-11-19 08:04:29,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:29,969 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2022-11-19 08:04:29,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-19 08:04:29,969 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:29,969 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:29,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 08:04:29,970 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:29,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:29,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1152574390, now seen corresponding path program 1 times [2022-11-19 08:04:29,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:29,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590414682] [2022-11-19 08:04:29,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:29,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:30,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:30,051 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:30,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590414682] [2022-11-19 08:04:30,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590414682] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:30,052 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:30,052 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:30,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740635457] [2022-11-19 08:04:30,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:30,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 08:04:30,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:30,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 08:04:30,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 08:04:30,054 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:30,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:30,131 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2022-11-19 08:04:30,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 08:04:30,132 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-19 08:04:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:30,133 INFO L225 Difference]: With dead ends: 58 [2022-11-19 08:04:30,133 INFO L226 Difference]: Without dead ends: 50 [2022-11-19 08:04:30,133 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-19 08:04:30,134 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 29 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:30,135 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 117 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:04:30,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2022-11-19 08:04:30,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2022-11-19 08:04:30,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.34375) internal successors, (43), 37 states have internal predecessors, (43), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-19 08:04:30,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 52 transitions. [2022-11-19 08:04:30,142 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 52 transitions. Word has length 11 [2022-11-19 08:04:30,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:30,143 INFO L495 AbstractCegarLoop]: Abstraction has 46 states and 52 transitions. [2022-11-19 08:04:30,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:30,143 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 52 transitions. [2022-11-19 08:04:30,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-19 08:04:30,144 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:30,144 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:30,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 08:04:30,144 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:30,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:30,145 INFO L85 PathProgramCache]: Analyzing trace with hash 1905182429, now seen corresponding path program 1 times [2022-11-19 08:04:30,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:30,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141702381] [2022-11-19 08:04:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:30,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:30,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:30,291 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:30,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:30,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141702381] [2022-11-19 08:04:30,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141702381] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:30,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228175830] [2022-11-19 08:04:30,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:30,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:30,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:30,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:30,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 08:04:30,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:30,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 08:04:30,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:30,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:30,601 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:30,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228175830] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:04:30,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1297126740] [2022-11-19 08:04:30,620 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:04:30,620 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:04:30,624 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:04:30,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:04:30,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 14 [2022-11-19 08:04:30,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680149058] [2022-11-19 08:04:30,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:04:30,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 08:04:30,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:30,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 08:04:30,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-11-19 08:04:30,629 INFO L87 Difference]: Start difference. First operand 46 states and 52 transitions. Second operand has 16 states, 13 states have (on average 2.0) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:30,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:30,870 INFO L93 Difference]: Finished difference Result 108 states and 114 transitions. [2022-11-19 08:04:30,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-19 08:04:30,870 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-11-19 08:04:30,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:30,872 INFO L225 Difference]: With dead ends: 108 [2022-11-19 08:04:30,872 INFO L226 Difference]: Without dead ends: 92 [2022-11-19 08:04:30,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-11-19 08:04:30,873 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 107 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:30,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [109 Valid, 228 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:04:30,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2022-11-19 08:04:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 76. [2022-11-19 08:04:30,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 61 states have internal predecessors, (75), 8 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-11-19 08:04:30,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 90 transitions. [2022-11-19 08:04:30,886 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 90 transitions. Word has length 16 [2022-11-19 08:04:30,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:30,887 INFO L495 AbstractCegarLoop]: Abstraction has 76 states and 90 transitions. [2022-11-19 08:04:30,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 2.0) internal successors, (26), 9 states have internal predecessors, (26), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:30,887 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 90 transitions. [2022-11-19 08:04:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-19 08:04:30,888 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:30,888 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:30,902 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:31,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:31,096 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:31,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:31,097 INFO L85 PathProgramCache]: Analyzing trace with hash 448467390, now seen corresponding path program 1 times [2022-11-19 08:04:31,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:31,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119437296] [2022-11-19 08:04:31,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:31,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:31,160 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:04:31,160 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:31,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119437296] [2022-11-19 08:04:31,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119437296] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:31,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:31,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:31,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552249838] [2022-11-19 08:04:31,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:31,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:04:31,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:31,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:04:31,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:04:31,163 INFO L87 Difference]: Start difference. First operand 76 states and 90 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:04:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:31,184 INFO L93 Difference]: Finished difference Result 91 states and 110 transitions. [2022-11-19 08:04:31,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:04:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-11-19 08:04:31,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:31,189 INFO L225 Difference]: With dead ends: 91 [2022-11-19 08:04:31,189 INFO L226 Difference]: Without dead ends: 89 [2022-11-19 08:04:31,192 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 [2022-11-19 08:04:31,196 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:31,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 73 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:04:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-11-19 08:04:31,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2022-11-19 08:04:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 67 states have (on average 1.2835820895522387) internal successors, (86), 71 states have internal predecessors, (86), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (10), 10 states have call predecessors, (10), 7 states have call successors, (10) [2022-11-19 08:04:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 104 transitions. [2022-11-19 08:04:31,220 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 104 transitions. Word has length 23 [2022-11-19 08:04:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:31,220 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 104 transitions. [2022-11-19 08:04:31,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:04:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 104 transitions. [2022-11-19 08:04:31,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:04:31,222 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:31,222 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:31,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 08:04:31,223 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:31,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:31,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1199375590, now seen corresponding path program 1 times [2022-11-19 08:04:31,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:31,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982000998] [2022-11-19 08:04:31,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:31,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:31,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:31,334 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:04:31,334 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:31,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982000998] [2022-11-19 08:04:31,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982000998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:31,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:31,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 08:04:31,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602067662] [2022-11-19 08:04:31,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:31,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 08:04:31,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:31,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 08:04:31,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 08:04:31,336 INFO L87 Difference]: Start difference. First operand 89 states and 104 transitions. Second operand has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:04:31,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:31,364 INFO L93 Difference]: Finished difference Result 101 states and 118 transitions. [2022-11-19 08:04:31,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 08:04:31,365 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2022-11-19 08:04:31,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:31,368 INFO L225 Difference]: With dead ends: 101 [2022-11-19 08:04:31,368 INFO L226 Difference]: Without dead ends: 99 [2022-11-19 08:04:31,369 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 [2022-11-19 08:04:31,370 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:31,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 83 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:04:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2022-11-19 08:04:31,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2022-11-19 08:04:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 79 states have internal predecessors, (94), 8 states have call successors, (8), 7 states have call predecessors, (8), 10 states have return successors, (12), 12 states have call predecessors, (12), 7 states have call successors, (12) [2022-11-19 08:04:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2022-11-19 08:04:31,385 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 28 [2022-11-19 08:04:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:31,385 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2022-11-19 08:04:31,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.333333333333333) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-19 08:04:31,385 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2022-11-19 08:04:31,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-19 08:04:31,386 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:31,386 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:31,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 08:04:31,387 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:31,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:31,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1392185903, now seen corresponding path program 1 times [2022-11-19 08:04:31,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:31,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148450128] [2022-11-19 08:04:31,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:31,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:31,482 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:04:31,483 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:31,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148450128] [2022-11-19 08:04:31,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148450128] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:31,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:31,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:31,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909484613] [2022-11-19 08:04:31,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:31,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:04:31,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:31,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:04:31,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:04:31,485 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:31,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:31,529 INFO L93 Difference]: Finished difference Result 115 states and 135 transitions. [2022-11-19 08:04:31,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:31,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-19 08:04:31,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:31,531 INFO L225 Difference]: With dead ends: 115 [2022-11-19 08:04:31,531 INFO L226 Difference]: Without dead ends: 114 [2022-11-19 08:04:31,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:04:31,532 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 2 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:31,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 103 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:04:31,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-11-19 08:04:31,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 111. [2022-11-19 08:04:31,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.2261904761904763) internal successors, (103), 88 states have internal predecessors, (103), 8 states have call successors, (8), 7 states have call predecessors, (8), 13 states have return successors, (15), 15 states have call predecessors, (15), 7 states have call successors, (15) [2022-11-19 08:04:31,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2022-11-19 08:04:31,542 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 28 [2022-11-19 08:04:31,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:31,542 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2022-11-19 08:04:31,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:31,543 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2022-11-19 08:04:31,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-19 08:04:31,544 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:31,544 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:31,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 08:04:31,544 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting id2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:31,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:31,545 INFO L85 PathProgramCache]: Analyzing trace with hash -208089989, now seen corresponding path program 1 times [2022-11-19 08:04:31,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:31,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581278616] [2022-11-19 08:04:31,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:31,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:31,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:31,589 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-19 08:04:31,589 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:31,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581278616] [2022-11-19 08:04:31,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581278616] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:31,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:31,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:04:31,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831761635] [2022-11-19 08:04:31,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:31,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:31,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:31,592 INFO L87 Difference]: Start difference. First operand 111 states and 126 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:31,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:31,603 INFO L93 Difference]: Finished difference Result 111 states and 126 transitions. [2022-11-19 08:04:31,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:31,603 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 29 [2022-11-19 08:04:31,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:31,604 INFO L225 Difference]: With dead ends: 111 [2022-11-19 08:04:31,605 INFO L226 Difference]: Without dead ends: 110 [2022-11-19 08:04:31,605 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 [2022-11-19 08:04:31,606 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 1 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 49 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 [2022-11-19 08:04:31,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 49 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:04:31,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-11-19 08:04:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 100. [2022-11-19 08:04:31,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.2105263157894737) internal successors, (92), 79 states have internal predecessors, (92), 8 states have call successors, (8), 7 states have call predecessors, (8), 11 states have return successors, (13), 13 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-19 08:04:31,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 113 transitions. [2022-11-19 08:04:31,616 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 113 transitions. Word has length 29 [2022-11-19 08:04:31,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:31,616 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 113 transitions. [2022-11-19 08:04:31,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:31,617 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 113 transitions. [2022-11-19 08:04:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-19 08:04:31,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:31,618 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1] [2022-11-19 08:04:31,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 08:04:31,618 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:31,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:31,619 INFO L85 PathProgramCache]: Analyzing trace with hash 1359823870, now seen corresponding path program 1 times [2022-11-19 08:04:31,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:31,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994621137] [2022-11-19 08:04:31,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:31,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:31,859 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:31,860 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:31,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994621137] [2022-11-19 08:04:31,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994621137] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:31,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464989899] [2022-11-19 08:04:31,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:31,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:31,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:31,862 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:31,889 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 08:04:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:31,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-19 08:04:31,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:31,986 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:32,251 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:32,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1464989899] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:04:32,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [471931705] [2022-11-19 08:04:32,254 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:04:32,254 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:04:32,255 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:04:32,256 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:04:32,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-11-19 08:04:32,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663188254] [2022-11-19 08:04:32,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:04:32,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-19 08:04:32,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:32,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-19 08:04:32,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=642, Unknown=0, NotChecked=0, Total=756 [2022-11-19 08:04:32,259 INFO L87 Difference]: Start difference. First operand 100 states and 113 transitions. Second operand has 28 states, 25 states have (on average 2.0) internal successors, (50), 15 states have internal predecessors, (50), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:32,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:32,847 INFO L93 Difference]: Finished difference Result 250 states and 269 transitions. [2022-11-19 08:04:32,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 08:04:32,851 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.0) internal successors, (50), 15 states have internal predecessors, (50), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2022-11-19 08:04:32,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:32,852 INFO L225 Difference]: With dead ends: 250 [2022-11-19 08:04:32,852 INFO L226 Difference]: Without dead ends: 216 [2022-11-19 08:04:32,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=319, Invalid=1661, Unknown=0, NotChecked=0, Total=1980 [2022-11-19 08:04:32,854 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 351 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:32,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 329 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:04:32,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-11-19 08:04:32,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 192. [2022-11-19 08:04:32,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 149 states have (on average 1.2080536912751678) internal successors, (180), 152 states have internal predecessors, (180), 15 states have call successors, (15), 14 states have call predecessors, (15), 23 states have return successors, (25), 25 states have call predecessors, (25), 14 states have call successors, (25) [2022-11-19 08:04:32,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 220 transitions. [2022-11-19 08:04:32,867 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 220 transitions. Word has length 31 [2022-11-19 08:04:32,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:32,868 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 220 transitions. [2022-11-19 08:04:32,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.0) internal successors, (50), 15 states have internal predecessors, (50), 12 states have call successors, (12), 12 states have call predecessors, (12), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:32,868 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 220 transitions. [2022-11-19 08:04:32,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 08:04:32,869 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:32,869 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:32,882 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:33,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:33,074 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:33,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:33,075 INFO L85 PathProgramCache]: Analyzing trace with hash 748551261, now seen corresponding path program 1 times [2022-11-19 08:04:33,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:33,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957337349] [2022-11-19 08:04:33,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:33,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 08:04:33,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:33,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957337349] [2022-11-19 08:04:33,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957337349] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:33,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:33,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 08:04:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225569642] [2022-11-19 08:04:33,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:33,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 08:04:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 08:04:33,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:04:33,140 INFO L87 Difference]: Start difference. First operand 192 states and 220 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:33,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:33,176 INFO L93 Difference]: Finished difference Result 241 states and 279 transitions. [2022-11-19 08:04:33,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 08:04:33,177 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 43 [2022-11-19 08:04:33,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:33,178 INFO L225 Difference]: With dead ends: 241 [2022-11-19 08:04:33,179 INFO L226 Difference]: Without dead ends: 240 [2022-11-19 08:04:33,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 08:04:33,180 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 1 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:33,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 122 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:04:33,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-11-19 08:04:33,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 235. [2022-11-19 08:04:33,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 183 states have (on average 1.169398907103825) internal successors, (214), 185 states have internal predecessors, (214), 15 states have call successors, (15), 14 states have call predecessors, (15), 32 states have return successors, (35), 35 states have call predecessors, (35), 14 states have call successors, (35) [2022-11-19 08:04:33,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 264 transitions. [2022-11-19 08:04:33,199 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 264 transitions. Word has length 43 [2022-11-19 08:04:33,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:33,200 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 264 transitions. [2022-11-19 08:04:33,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:33,200 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 264 transitions. [2022-11-19 08:04:33,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-19 08:04:33,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:33,202 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:33,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 08:04:33,202 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting idErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:33,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash 231351302, now seen corresponding path program 1 times [2022-11-19 08:04:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:33,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331427590] [2022-11-19 08:04:33,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:33,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:33,285 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:04:33,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:33,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331427590] [2022-11-19 08:04:33,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331427590] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:33,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150804082] [2022-11-19 08:04:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:33,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:33,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:33,288 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:33,334 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 08:04:33,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:33,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 08:04:33,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:33,451 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:04:33,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:33,746 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:04:33,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150804082] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:04:33,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [202685153] [2022-11-19 08:04:33,748 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-19 08:04:33,749 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:04:33,749 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:04:33,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:04:33,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-19 08:04:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506931192] [2022-11-19 08:04:33,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:04:33,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-19 08:04:33,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:33,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-19 08:04:33,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-19 08:04:33,755 INFO L87 Difference]: Start difference. First operand 235 states and 264 transitions. Second operand has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 08:04:33,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:33,858 INFO L93 Difference]: Finished difference Result 334 states and 388 transitions. [2022-11-19 08:04:33,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 08:04:33,859 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) Word has length 43 [2022-11-19 08:04:33,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:33,861 INFO L225 Difference]: With dead ends: 334 [2022-11-19 08:04:33,861 INFO L226 Difference]: Without dead ends: 332 [2022-11-19 08:04:33,862 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-11-19 08:04:33,862 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 6 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:33,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 195 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 08:04:33,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-11-19 08:04:33,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 289. [2022-11-19 08:04:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 289 states, 227 states have (on average 1.1629955947136563) internal successors, (264), 229 states have internal predecessors, (264), 15 states have call successors, (15), 14 states have call predecessors, (15), 42 states have return successors, (45), 45 states have call predecessors, (45), 14 states have call successors, (45) [2022-11-19 08:04:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 324 transitions. [2022-11-19 08:04:33,875 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 324 transitions. Word has length 43 [2022-11-19 08:04:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:33,876 INFO L495 AbstractCegarLoop]: Abstraction has 289 states and 324 transitions. [2022-11-19 08:04:33,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.533333333333333) internal successors, (38), 16 states have internal predecessors, (38), 1 states have call successors, (3), 1 states have call predecessors, (3), 7 states have return successors, (7), 7 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-19 08:04:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 324 transitions. [2022-11-19 08:04:33,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-19 08:04:33,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:33,877 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 08:04:33,890 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:34,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:34,083 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting idErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:34,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:34,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1730252686, now seen corresponding path program 1 times [2022-11-19 08:04:34,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:34,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389426391] [2022-11-19 08:04:34,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:34,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:34,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:34,118 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-19 08:04:34,118 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:34,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389426391] [2022-11-19 08:04:34,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389426391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 08:04:34,119 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 08:04:34,119 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 08:04:34,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806508392] [2022-11-19 08:04:34,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 08:04:34,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 08:04:34,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:34,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 08:04:34,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 08:04:34,124 INFO L87 Difference]: Start difference. First operand 289 states and 324 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:34,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:34,142 INFO L93 Difference]: Finished difference Result 289 states and 324 transitions. [2022-11-19 08:04:34,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 08:04:34,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 44 [2022-11-19 08:04:34,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:34,144 INFO L225 Difference]: With dead ends: 289 [2022-11-19 08:04:34,144 INFO L226 Difference]: Without dead ends: 263 [2022-11-19 08:04:34,145 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 [2022-11-19 08:04:34,146 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 1 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 47 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 [2022-11-19 08:04:34,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 47 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-19 08:04:34,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-19 08:04:34,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-11-19 08:04:34,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.1111111111111112) internal successors, (230), 208 states have internal predecessors, (230), 15 states have call successors, (15), 14 states have call predecessors, (15), 37 states have return successors, (40), 40 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-19 08:04:34,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 285 transitions. [2022-11-19 08:04:34,160 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 285 transitions. Word has length 44 [2022-11-19 08:04:34,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:34,160 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 285 transitions. [2022-11-19 08:04:34,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-19 08:04:34,161 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 285 transitions. [2022-11-19 08:04:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 08:04:34,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:34,162 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1] [2022-11-19 08:04:34,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 08:04:34,163 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:34,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:34,163 INFO L85 PathProgramCache]: Analyzing trace with hash 468934958, now seen corresponding path program 1 times [2022-11-19 08:04:34,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:34,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240357643] [2022-11-19 08:04:34,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:34,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:34,379 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:04:34,379 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240357643] [2022-11-19 08:04:34,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240357643] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:34,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716018224] [2022-11-19 08:04:34,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:34,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:34,380 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:34,381 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:34,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 08:04:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:34,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-19 08:04:34,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 08:04:34,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:35,500 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 18 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 08:04:35,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [716018224] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:04:35,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [740877973] [2022-11-19 08:04:35,503 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-19 08:04:35,503 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:04:35,503 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:04:35,504 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:04:35,505 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 17] total 19 [2022-11-19 08:04:35,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080934115] [2022-11-19 08:04:35,505 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:04:35,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-19 08:04:35,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:35,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-19 08:04:35,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2022-11-19 08:04:35,507 INFO L87 Difference]: Start difference. First operand 263 states and 285 transitions. Second operand has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-19 08:04:35,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:35,804 INFO L93 Difference]: Finished difference Result 450 states and 487 transitions. [2022-11-19 08:04:35,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 08:04:35,805 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) Word has length 58 [2022-11-19 08:04:35,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:35,806 INFO L225 Difference]: With dead ends: 450 [2022-11-19 08:04:35,806 INFO L226 Difference]: Without dead ends: 263 [2022-11-19 08:04:35,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 104 SyntacticMatches, 10 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2022-11-19 08:04:35,808 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 91 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:35,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 187 Invalid, 227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 08:04:35,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-11-19 08:04:35,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-11-19 08:04:35,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 207 states have (on average 1.0917874396135265) internal successors, (226), 208 states have internal predecessors, (226), 15 states have call successors, (15), 14 states have call predecessors, (15), 37 states have return successors, (40), 40 states have call predecessors, (40), 14 states have call successors, (40) [2022-11-19 08:04:35,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 281 transitions. [2022-11-19 08:04:35,819 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 281 transitions. Word has length 58 [2022-11-19 08:04:35,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:35,820 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 281 transitions. [2022-11-19 08:04:35,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 16 states have internal predecessors, (55), 9 states have call successors, (9), 3 states have call predecessors, (9), 5 states have return successors, (9), 5 states have call predecessors, (9), 7 states have call successors, (9) [2022-11-19 08:04:35,820 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 281 transitions. [2022-11-19 08:04:35,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-19 08:04:35,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:35,821 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1] [2022-11-19 08:04:35,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:36,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 08:04:36,032 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:36,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 896213033, now seen corresponding path program 2 times [2022-11-19 08:04:36,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:36,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219014250] [2022-11-19 08:04:36,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:36,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:36,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:36,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219014250] [2022-11-19 08:04:36,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219014250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:36,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785458654] [2022-11-19 08:04:36,561 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:04:36,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:36,562 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:36,567 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:36,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 08:04:36,638 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2022-11-19 08:04:36,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:04:36,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-19 08:04:36,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:36,768 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:36,768 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 0 proven. 174 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:37,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785458654] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:04:37,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1451444328] [2022-11-19 08:04:37,508 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:04:37,508 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:04:37,508 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:04:37,509 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:04:37,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27, 27] total 54 [2022-11-19 08:04:37,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79105334] [2022-11-19 08:04:37,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:04:37,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-11-19 08:04:37,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:37,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-11-19 08:04:37,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2656, Unknown=0, NotChecked=0, Total=3080 [2022-11-19 08:04:37,512 INFO L87 Difference]: Start difference. First operand 263 states and 281 transitions. Second operand has 56 states, 53 states have (on average 2.0) internal successors, (106), 29 states have internal predecessors, (106), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:38,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:38,941 INFO L93 Difference]: Finished difference Result 576 states and 600 transitions. [2022-11-19 08:04:38,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-11-19 08:04:38,941 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 2.0) internal successors, (106), 29 states have internal predecessors, (106), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-11-19 08:04:38,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:38,944 INFO L225 Difference]: With dead ends: 576 [2022-11-19 08:04:38,944 INFO L226 Difference]: Without dead ends: 574 [2022-11-19 08:04:38,947 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2143 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1231, Invalid=6779, Unknown=0, NotChecked=0, Total=8010 [2022-11-19 08:04:38,948 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 828 mSDsluCounter, 561 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 597 SdHoareTripleChecker+Invalid, 906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:38,948 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 597 Invalid, 906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 08:04:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-11-19 08:04:38,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 549. [2022-11-19 08:04:38,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 435 states have (on average 1.0873563218390805) internal successors, (473), 435 states have internal predecessors, (473), 28 states have call successors, (28), 27 states have call predecessors, (28), 82 states have return successors, (86), 86 states have call predecessors, (86), 27 states have call successors, (86) [2022-11-19 08:04:38,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 587 transitions. [2022-11-19 08:04:38,985 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 587 transitions. Word has length 66 [2022-11-19 08:04:38,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:38,985 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 587 transitions. [2022-11-19 08:04:38,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 2.0) internal successors, (106), 29 states have internal predecessors, (106), 26 states have call successors, (26), 26 states have call predecessors, (26), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:38,985 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 587 transitions. [2022-11-19 08:04:38,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-19 08:04:38,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:38,987 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2022-11-19 08:04:38,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:39,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-19 08:04:39,192 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1844897983, now seen corresponding path program 1 times [2022-11-19 08:04:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:39,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333029320] [2022-11-19 08:04:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:39,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:39,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:39,402 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-11-19 08:04:39,402 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:39,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333029320] [2022-11-19 08:04:39,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333029320] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:39,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474454959] [2022-11-19 08:04:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:39,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:39,403 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:39,415 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:39,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 08:04:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:39,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-19 08:04:39,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:39,761 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 28 proven. 27 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-19 08:04:39,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:41,262 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 28 proven. 45 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 08:04:41,262 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474454959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:04:41,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1761847888] [2022-11-19 08:04:41,265 INFO L159 IcfgInterpreter]: Started Sifa with 23 locations of interest [2022-11-19 08:04:41,265 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:04:41,265 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:04:41,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:04:41,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15, 19] total 38 [2022-11-19 08:04:41,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091686581] [2022-11-19 08:04:41,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:04:41,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-11-19 08:04:41,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:41,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-11-19 08:04:41,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1292, Unknown=0, NotChecked=0, Total=1406 [2022-11-19 08:04:41,267 INFO L87 Difference]: Start difference. First operand 549 states and 587 transitions. Second operand has 38 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 34 states have internal predecessors, (105), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-19 08:04:41,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:41,942 INFO L93 Difference]: Finished difference Result 588 states and 626 transitions. [2022-11-19 08:04:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-19 08:04:41,943 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 34 states have internal predecessors, (105), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) Word has length 68 [2022-11-19 08:04:41,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:41,944 INFO L225 Difference]: With dead ends: 588 [2022-11-19 08:04:41,944 INFO L226 Difference]: Without dead ends: 139 [2022-11-19 08:04:41,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 107 SyntacticMatches, 6 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=301, Invalid=2249, Unknown=0, NotChecked=0, Total=2550 [2022-11-19 08:04:41,947 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 156 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 585 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 585 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:41,947 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 99 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 585 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 08:04:41,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-11-19 08:04:41,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 138. [2022-11-19 08:04:41,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 109 states have (on average 1.018348623853211) internal successors, (111), 110 states have internal predecessors, (111), 27 states have call successors, (27), 27 states have call predecessors, (27), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:41,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions. [2022-11-19 08:04:41,957 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 68 [2022-11-19 08:04:41,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:41,957 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions. [2022-11-19 08:04:41,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 36 states have (on average 2.9166666666666665) internal successors, (105), 34 states have internal predecessors, (105), 14 states have call successors, (16), 5 states have call predecessors, (16), 12 states have return successors, (18), 12 states have call predecessors, (18), 10 states have call successors, (18) [2022-11-19 08:04:41,957 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions. [2022-11-19 08:04:41,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-19 08:04:41,959 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:41,959 INFO L195 NwaCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 1, 1, 1] [2022-11-19 08:04:41,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:42,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:42,175 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:42,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:42,175 INFO L85 PathProgramCache]: Analyzing trace with hash 724883814, now seen corresponding path program 2 times [2022-11-19 08:04:42,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:42,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736015015] [2022-11-19 08:04:42,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:42,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:43,835 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:43,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736015015] [2022-11-19 08:04:43,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736015015] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:43,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2142647199] [2022-11-19 08:04:43,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-19 08:04:43,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:43,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:43,837 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:43,839 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 08:04:43,937 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 13 check-sat command(s) [2022-11-19 08:04:43,938 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:04:43,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 54 conjunts are in the unsatisfiable core [2022-11-19 08:04:43,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:44,155 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:44,155 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:04:46,371 INFO L134 CoverageAnalysis]: Checked inductivity of 768 backedges. 0 proven. 768 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:46,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2142647199] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:04:46,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [148214867] [2022-11-19 08:04:46,374 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:04:46,374 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:04:46,374 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:04:46,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:04:46,375 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53, 53] total 106 [2022-11-19 08:04:46,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044648105] [2022-11-19 08:04:46,375 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:04:46,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 108 states [2022-11-19 08:04:46,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:04:46,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants. [2022-11-19 08:04:46,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1514, Invalid=10042, Unknown=0, NotChecked=0, Total=11556 [2022-11-19 08:04:46,381 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand has 108 states, 105 states have (on average 2.0) internal successors, (210), 55 states have internal predecessors, (210), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:04:48,716 INFO L93 Difference]: Finished difference Result 276 states and 301 transitions. [2022-11-19 08:04:48,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-11-19 08:04:48,717 INFO L78 Accepts]: Start accepts. Automaton has has 108 states, 105 states have (on average 2.0) internal successors, (210), 55 states have internal predecessors, (210), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 131 [2022-11-19 08:04:48,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:04:48,718 INFO L225 Difference]: With dead ends: 276 [2022-11-19 08:04:48,718 INFO L226 Difference]: Without dead ends: 274 [2022-11-19 08:04:48,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 207 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7600 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=3672, Invalid=21768, Unknown=0, NotChecked=0, Total=25440 [2022-11-19 08:04:48,728 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 622 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:04:48,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 42 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 08:04:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-11-19 08:04:48,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 273. [2022-11-19 08:04:48,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 217 states have (on average 1.0092165898617511) internal successors, (219), 218 states have internal predecessors, (219), 54 states have call successors, (54), 54 states have call predecessors, (54), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:48,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 273 transitions. [2022-11-19 08:04:48,745 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 273 transitions. Word has length 131 [2022-11-19 08:04:48,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:04:48,746 INFO L495 AbstractCegarLoop]: Abstraction has 273 states and 273 transitions. [2022-11-19 08:04:48,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 108 states, 105 states have (on average 2.0) internal successors, (210), 55 states have internal predecessors, (210), 52 states have call successors, (52), 52 states have call predecessors, (52), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:04:48,746 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 273 transitions. [2022-11-19 08:04:48,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-11-19 08:04:48,749 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:04:48,749 INFO L195 NwaCegarLoop]: trace histogram [27, 27, 27, 26, 26, 26, 26, 26, 26, 26, 1, 1, 1] [2022-11-19 08:04:48,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 08:04:48,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-19 08:04:48,955 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:04:48,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:04:48,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1711155367, now seen corresponding path program 3 times [2022-11-19 08:04:48,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:04:48,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311355090] [2022-11-19 08:04:48,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:04:48,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:04:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:04:54,815 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 3354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:54,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:04:54,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311355090] [2022-11-19 08:04:54,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311355090] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:04:54,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196665599] [2022-11-19 08:04:54,816 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:04:54,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:04:54,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:04:54,819 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:04:54,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 08:04:54,984 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:04:54,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:04:54,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 108 conjunts are in the unsatisfiable core [2022-11-19 08:04:54,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:04:55,451 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 3354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:04:55,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:05:03,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3354 backedges. 0 proven. 3354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:03,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196665599] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:05:03,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [458183054] [2022-11-19 08:05:03,250 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:05:03,250 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:05:03,251 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:05:03,251 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:05:03,252 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [107, 107, 107] total 214 [2022-11-19 08:05:03,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784458215] [2022-11-19 08:05:03,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:05:03,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 216 states [2022-11-19 08:05:03,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:05:03,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 216 interpolants. [2022-11-19 08:05:03,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5944, Invalid=40496, Unknown=0, NotChecked=0, Total=46440 [2022-11-19 08:05:03,265 INFO L87 Difference]: Start difference. First operand 273 states and 273 transitions. Second operand has 216 states, 213 states have (on average 2.0) internal successors, (426), 109 states have internal predecessors, (426), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:10,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:05:10,947 INFO L93 Difference]: Finished difference Result 541 states and 592 transitions. [2022-11-19 08:05:10,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2022-11-19 08:05:10,948 INFO L78 Accepts]: Start accepts. Automaton has has 216 states, 213 states have (on average 2.0) internal successors, (426), 109 states have internal predecessors, (426), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 266 [2022-11-19 08:05:10,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:05:10,950 INFO L225 Difference]: With dead ends: 541 [2022-11-19 08:05:10,951 INFO L226 Difference]: Without dead ends: 539 [2022-11-19 08:05:10,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 742 GetRequests, 423 SyntacticMatches, 0 SemanticMatches, 319 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32497 ImplicationChecksByTransitivity, 16.9s TimeCoverageRelationStatistics Valid=14530, Invalid=88190, Unknown=0, NotChecked=0, Total=102720 [2022-11-19 08:05:10,960 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 1597 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1114 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 1171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-19 08:05:10,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1597 Valid, 41 Invalid, 1171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1114 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-19 08:05:10,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-11-19 08:05:10,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 538. [2022-11-19 08:05:10,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 538 states, 429 states have (on average 1.0046620046620047) internal successors, (431), 430 states have internal predecessors, (431), 107 states have call successors, (107), 107 states have call predecessors, (107), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:10,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 538 transitions. [2022-11-19 08:05:10,996 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 538 transitions. Word has length 266 [2022-11-19 08:05:10,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:05:10,996 INFO L495 AbstractCegarLoop]: Abstraction has 538 states and 538 transitions. [2022-11-19 08:05:10,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 216 states, 213 states have (on average 2.0) internal successors, (426), 109 states have internal predecessors, (426), 106 states have call successors, (106), 106 states have call predecessors, (106), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:05:10,997 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 538 transitions. [2022-11-19 08:05:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2022-11-19 08:05:11,008 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:05:11,008 INFO L195 NwaCegarLoop]: trace histogram [53, 53, 53, 53, 53, 53, 53, 53, 52, 52, 1, 1, 1] [2022-11-19 08:05:11,018 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 08:05:11,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-19 08:05:11,216 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:05:11,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:05:11,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1021896454, now seen corresponding path program 3 times [2022-11-19 08:05:11,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:05:11,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570015356] [2022-11-19 08:05:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:05:11,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:05:11,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:05:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 13728 backedges. 0 proven. 13728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:34,461 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:05:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570015356] [2022-11-19 08:05:34,461 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570015356] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:05:34,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022705716] [2022-11-19 08:05:34,461 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-19 08:05:34,461 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:05:34,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:05:34,463 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:05:34,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 08:05:34,676 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-19 08:05:34,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-19 08:05:34,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 981 conjuncts, 214 conjunts are in the unsatisfiable core [2022-11-19 08:05:34,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:05:35,534 INFO L134 CoverageAnalysis]: Checked inductivity of 13728 backedges. 0 proven. 13728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:05:35,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:06:04,436 INFO L134 CoverageAnalysis]: Checked inductivity of 13728 backedges. 0 proven. 13728 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:06:04,436 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022705716] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:06:04,436 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [40537617] [2022-11-19 08:06:04,438 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:06:04,438 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:06:04,439 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:06:04,439 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:06:04,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [213, 213, 213] total 426 [2022-11-19 08:06:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471037501] [2022-11-19 08:06:04,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:06:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 428 states [2022-11-19 08:06:04,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:06:04,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 428 interpolants. [2022-11-19 08:06:04,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23114, Invalid=159642, Unknown=0, NotChecked=0, Total=182756 [2022-11-19 08:06:04,459 INFO L87 Difference]: Start difference. First operand 538 states and 538 transitions. Second operand has 428 states, 425 states have (on average 2.0) internal successors, (850), 215 states have internal predecessors, (850), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:06:35,151 INFO L93 Difference]: Finished difference Result 1076 states and 1181 transitions. [2022-11-19 08:06:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 428 states. [2022-11-19 08:06:35,152 INFO L78 Accepts]: Start accepts. Automaton has has 428 states, 425 states have (on average 2.0) internal successors, (850), 215 states have internal predecessors, (850), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 531 [2022-11-19 08:06:35,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:06:35,156 INFO L225 Difference]: With dead ends: 1076 [2022-11-19 08:06:35,156 INFO L226 Difference]: Without dead ends: 1074 [2022-11-19 08:06:35,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1485 GetRequests, 847 SyntacticMatches, 0 SemanticMatches, 638 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132720 ImplicationChecksByTransitivity, 63.7s TimeCoverageRelationStatistics Valid=57352, Invalid=351608, Unknown=0, NotChecked=0, Total=408960 [2022-11-19 08:06:35,178 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4106 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4106 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-19 08:06:35,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4106 Valid, 42 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-19 08:06:35,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1074 states. [2022-11-19 08:06:35,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1074 to 1073. [2022-11-19 08:06:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1073 states, 857 states have (on average 1.0023337222870479) internal successors, (859), 858 states have internal predecessors, (859), 214 states have call successors, (214), 214 states have call predecessors, (214), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:35,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1073 transitions. [2022-11-19 08:06:35,276 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1073 transitions. Word has length 531 [2022-11-19 08:06:35,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:06:35,277 INFO L495 AbstractCegarLoop]: Abstraction has 1073 states and 1073 transitions. [2022-11-19 08:06:35,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 428 states, 425 states have (on average 2.0) internal successors, (850), 215 states have internal predecessors, (850), 212 states have call successors, (212), 212 states have call predecessors, (212), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:06:35,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1073 transitions. [2022-11-19 08:06:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2022-11-19 08:06:35,323 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:06:35,324 INFO L195 NwaCegarLoop]: trace histogram [107, 107, 107, 106, 106, 106, 106, 106, 106, 106, 1, 1, 1] [2022-11-19 08:06:35,338 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 08:06:35,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:06:35,531 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting idErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:06:35,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:06:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash 2105136153, now seen corresponding path program 4 times [2022-11-19 08:06:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:06:35,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087152368] [2022-11-19 08:06:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:06:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:06:36,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 56074 backedges. 0 proven. 56074 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:08:28,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 08:08:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1087152368] [2022-11-19 08:08:28,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1087152368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 08:08:28,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641216493] [2022-11-19 08:08:28,487 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-19 08:08:28,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:08:28,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 08:08:28,493 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 08:08:28,497 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 08:08:28,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 08:08:28,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 1944 conjuncts, 428 conjunts are in the unsatisfiable core [2022-11-19 08:08:28,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 08:08:30,525 INFO L134 CoverageAnalysis]: Checked inductivity of 56074 backedges. 0 proven. 56074 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:08:30,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 08:10:24,339 INFO L134 CoverageAnalysis]: Checked inductivity of 56074 backedges. 0 proven. 56074 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 08:10:24,340 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641216493] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 08:10:24,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [860172802] [2022-11-19 08:10:24,342 INFO L159 IcfgInterpreter]: Started Sifa with 13 locations of interest [2022-11-19 08:10:24,342 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 08:10:24,342 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:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.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) [2022-11-19 08:10:24,343 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-19 08:10:24,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [427, 427, 427] total 854 [2022-11-19 08:10:24,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477969608] [2022-11-19 08:10:24,344 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-19 08:10:24,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 856 states [2022-11-19 08:10:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 08:10:24,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 856 interpolants. [2022-11-19 08:10:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92024, Invalid=639856, Unknown=0, NotChecked=0, Total=731880 [2022-11-19 08:10:24,395 INFO L87 Difference]: Start difference. First operand 1073 states and 1073 transitions. Second operand has 856 states, 853 states have (on average 2.0) internal successors, (1706), 429 states have internal predecessors, (1706), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:13:06,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 08:13:06,801 INFO L93 Difference]: Finished difference Result 2141 states and 2352 transitions. [2022-11-19 08:13:06,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 854 states. [2022-11-19 08:13:06,802 INFO L78 Accepts]: Start accepts. Automaton has has 856 states, 853 states have (on average 2.0) internal successors, (1706), 429 states have internal predecessors, (1706), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1066 [2022-11-19 08:13:06,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 08:13:06,811 INFO L225 Difference]: With dead ends: 2141 [2022-11-19 08:13:06,811 INFO L226 Difference]: Without dead ends: 2139 [2022-11-19 08:13:07,027 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2982 GetRequests, 1703 SyntacticMatches, 0 SemanticMatches, 1279 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 539537 ImplicationChecksByTransitivity, 257.4s TimeCoverageRelationStatistics Valid=228770, Invalid=1410910, Unknown=0, NotChecked=0, Total=1639680 [2022-11-19 08:13:07,030 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 10049 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 4046 mSolverCounterSat, 218 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10049 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 4264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 218 IncrementalHoareTripleChecker+Valid, 4046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 08:13:07,030 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10049 Valid, 44 Invalid, 4264 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [218 Valid, 4046 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 08:13:07,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2139 states. [2022-11-19 08:13:07,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2139 to 2138. [2022-11-19 08:13:07,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2138 states, 1709 states have (on average 1.0011702750146285) internal successors, (1711), 1710 states have internal predecessors, (1711), 427 states have call successors, (427), 427 states have call predecessors, (427), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:13:07,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2138 states to 2138 states and 2138 transitions. [2022-11-19 08:13:07,224 INFO L78 Accepts]: Start accepts. Automaton has 2138 states and 2138 transitions. Word has length 1066 [2022-11-19 08:13:07,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 08:13:07,227 INFO L495 AbstractCegarLoop]: Abstraction has 2138 states and 2138 transitions. [2022-11-19 08:13:07,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 856 states, 853 states have (on average 2.0) internal successors, (1706), 429 states have internal predecessors, (1706), 426 states have call successors, (426), 426 states have call predecessors, (426), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-19 08:13:07,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2138 states and 2138 transitions. [2022-11-19 08:13:07,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2132 [2022-11-19 08:13:07,270 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 08:13:07,271 INFO L195 NwaCegarLoop]: trace histogram [213, 213, 213, 213, 213, 213, 213, 213, 212, 212, 1, 1, 1] [2022-11-19 08:13:07,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 08:13:07,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_83565ece-7086-40ba-8beb-e0ad12e45414/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 08:13:07,479 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [id2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, id2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 5 more)] === [2022-11-19 08:13:07,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 08:13:07,479 INFO L85 PathProgramCache]: Analyzing trace with hash 47488390, now seen corresponding path program 4 times [2022-11-19 08:13:07,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 08:13:07,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512817113] [2022-11-19 08:13:07,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 08:13:07,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 08:13:10,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat