./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P --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 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:37:12,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:37:12,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:37:12,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:37:12,942 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:37:12,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:37:12,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:37:12,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:37:12,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:37:12,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:37:12,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:37:12,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:37:12,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:37:12,958 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:37:12,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:37:12,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:37:12,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:37:12,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:37:12,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:37:12,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:37:12,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:37:12,976 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:37:12,978 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:37:12,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:37:12,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:37:12,984 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:37:12,985 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:37:12,986 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:37:12,987 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:37:12,988 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:37:12,989 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:37:12,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:37:12,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:37:12,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:37:12,994 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:37:12,994 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:37:12,995 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:37:12,996 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:37:12,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:37:12,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:37:12,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:37:13,004 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-21 01:37:13,034 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:37:13,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:37:13,035 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:37:13,035 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:37:13,036 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:37:13,036 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:37:13,036 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:37:13,037 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:37:13,037 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:37:13,037 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:37:13,038 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:37:13,038 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:37:13,038 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:37:13,039 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:37:13,039 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:37:13,039 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:37:13,039 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:37:13,040 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:37:13,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:37:13,041 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 01:37:13,041 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 01:37:13,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:37:13,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 01:37:13,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:37:13,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:37:13,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:37:13,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:37:13,043 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 01:37:13,044 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 01:37:13,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:37:13,044 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:37:13,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:37:13,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:37:13,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:37:13,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:13,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:37:13,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:37:13,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:37:13,047 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:37:13,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:37:13,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:37:13,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:37:13,048 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:37:13,048 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 58639ff425b05f7497b3d6ac8d1e0a9c9e2e7663b2f2f0cb8654fd8932f07edd [2021-11-21 01:37:13,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:37:13,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:37:13,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:37:13,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:37:13,415 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:37:13,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-11-21 01:37:13,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/data/618e85126/f5d920de7f7844c29d9fab4de3d8caa7/FLAGfa4368606 [2021-11-21 01:37:13,942 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:37:13,943 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i [2021-11-21 01:37:13,949 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/data/618e85126/f5d920de7f7844c29d9fab4de3d8caa7/FLAGfa4368606 [2021-11-21 01:37:14,335 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/data/618e85126/f5d920de7f7844c29d9fab4de3d8caa7 [2021-11-21 01:37:14,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:37:14,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:37:14,340 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:14,341 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:37:14,355 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:37:14,356 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74437c5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14, skipping insertion in model container [2021-11-21 01:37:14,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:37:14,393 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:37:14,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-11-21 01:37:14,599 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:14,609 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:37:14,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/sv-benchmarks/c/loop-zilu/benchmark08_conjunctive.i[873,886] [2021-11-21 01:37:14,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:37:14,638 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:37:14,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14 WrapperNode [2021-11-21 01:37:14,639 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:37:14,640 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:14,640 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:37:14,640 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:37:14,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,657 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,679 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-11-21 01:37:14,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:37:14,681 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:37:14,681 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:37:14,681 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:37:14,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,703 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:37:14,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:37:14,708 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:37:14,708 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:37:14,709 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (1/1) ... [2021-11-21 01:37:14,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:37:14,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:14,750 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:37:14,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:37:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:37:14,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:37:14,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:37:14,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:37:14,883 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:37:14,885 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:37:15,023 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:37:15,047 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:37:15,048 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 01:37:15,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:15 BoogieIcfgContainer [2021-11-21 01:37:15,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:37:15,053 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:37:15,054 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:37:15,058 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:37:15,058 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:37:14" (1/3) ... [2021-11-21 01:37:15,059 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb74e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:15, skipping insertion in model container [2021-11-21 01:37:15,059 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:37:14" (2/3) ... [2021-11-21 01:37:15,060 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eb74e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:37:15, skipping insertion in model container [2021-11-21 01:37:15,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:37:15" (3/3) ... [2021-11-21 01:37:15,062 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark08_conjunctive.i [2021-11-21 01:37:15,069 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:37:15,069 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-21 01:37:15,130 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:37:15,140 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-21 01:37:15,140 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 01:37:15,158 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 01:37:15,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:15,165 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 01:37:15,166 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-11-21 01:37:15,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:15,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507260405] [2021-11-21 01:37:15,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:15,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:15,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:15,362 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:15,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507260405] [2021-11-21 01:37:15,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507260405] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:15,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:15,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:37:15,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805626419] [2021-11-21 01:37:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:15,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:37:15,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:15,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:37:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:15,408 INFO L87 Difference]: Start difference. First operand has 13 states, 8 states have (on average 1.75) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:15,468 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-21 01:37:15,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:15,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-11-21 01:37:15,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:15,481 INFO L225 Difference]: With dead ends: 19 [2021-11-21 01:37:15,485 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 01:37:15,489 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:37:15,504 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 4 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 10 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 [2021-11-21 01:37:15,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 10 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 01:37:15,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-21 01:37:15,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.4444444444444444) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-21 01:37:15,544 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-21 01:37:15,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:15,551 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-21 01:37:15,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,554 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-21 01:37:15,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 01:37:15,555 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:15,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 01:37:15,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 01:37:15,556 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:15,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:15,557 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-11-21 01:37:15,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:15,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121250890] [2021-11-21 01:37:15,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:15,571 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:15,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:15,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:15,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121250890] [2021-11-21 01:37:15,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121250890] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:15,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:15,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 01:37:15,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277038032] [2021-11-21 01:37:15,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:15,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 01:37:15,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:15,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 01:37:15,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 01:37:15,632 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:15,657 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-21 01:37:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 01:37:15,658 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-11-21 01:37:15,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:15,659 INFO L225 Difference]: With dead ends: 15 [2021-11-21 01:37:15,659 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 01:37:15,660 INFO L932 BasicCegarLoop]: 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 [2021-11-21 01:37:15,663 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:15,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 10 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:15,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 01:37:15,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 01:37:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-21 01:37:15,671 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-21 01:37:15,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:15,671 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-21 01:37:15,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,672 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-21 01:37:15,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 01:37:15,673 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:15,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 01:37:15,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 01:37:15,674 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:15,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:15,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-11-21 01:37:15,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:15,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376282858] [2021-11-21 01:37:15,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:15,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:15,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:15,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:15,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376282858] [2021-11-21 01:37:15,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376282858] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:15,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:15,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:37:15,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295351131] [2021-11-21 01:37:15,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:15,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:15,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:15,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:15,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:15,778 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:15,865 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-21 01:37:15,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:37:15,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-11-21 01:37:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:15,876 INFO L225 Difference]: With dead ends: 18 [2021-11-21 01:37:15,877 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 01:37:15,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:15,879 INFO L933 BasicCegarLoop]: 4 mSDtfsCounter, 5 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:15,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 10 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:15,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 01:37:15,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-21 01:37:15,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.3636363636363635) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-21 01:37:15,891 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-11-21 01:37:15,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:15,892 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-21 01:37:15,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:15,893 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-21 01:37:15,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 01:37:15,893 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:15,894 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:15,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 01:37:15,895 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:15,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:15,897 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-11-21 01:37:15,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:15,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167565032] [2021-11-21 01:37:15,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:15,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:15,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:15,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:15,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:15,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167565032] [2021-11-21 01:37:15,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167565032] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:15,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:37:15,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 01:37:15,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427034301] [2021-11-21 01:37:15,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:15,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 01:37:15,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 01:37:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 01:37:15,991 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:16,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:16,047 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-21 01:37:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 01:37:16,048 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-11-21 01:37:16,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:16,048 INFO L225 Difference]: With dead ends: 15 [2021-11-21 01:37:16,049 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 01:37:16,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-21 01:37:16,052 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 2 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 [2021-11-21 01:37:16,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 2 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:16,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 01:37:16,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 01:37:16,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:16,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-21 01:37:16,058 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-11-21 01:37:16,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:16,058 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-21 01:37:16,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:16,059 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-21 01:37:16,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 01:37:16,059 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:16,060 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:16,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 01:37:16,060 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:16,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:16,061 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-11-21 01:37:16,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:16,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328288740] [2021-11-21 01:37:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:16,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:16,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:16,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:16,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328288740] [2021-11-21 01:37:16,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [328288740] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:16,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351120526] [2021-11-21 01:37:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:16,127 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:16,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:16,130 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:16,151 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:37:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:16,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:37:16,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:16,385 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:16,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:16,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351120526] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:16,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [793110797] [2021-11-21 01:37:16,530 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:37:16,531 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:37:16,536 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:37:16,542 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:37:16,548 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:37:18,425 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:37:18,806 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:37:18,806 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:37:18,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-11-21 01:37:18,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2825533] [2021-11-21 01:37:18,807 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:18,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 01:37:18,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:18,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 01:37:18,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-21 01:37:18,810 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:18,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:18,936 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-21 01:37:18,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:37:18,937 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-21 01:37:18,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:18,938 INFO L225 Difference]: With dead ends: 25 [2021-11-21 01:37:18,938 INFO L226 Difference]: Without dead ends: 24 [2021-11-21 01:37:18,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:37:18,941 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:18,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 6 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:37:18,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-21 01:37:18,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-21 01:37:18,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 19 states have (on average 1.263157894736842) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:18,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-21 01:37:18,948 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2021-11-21 01:37:18,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:18,949 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-21 01:37:18,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.5) internal successors, (25), 11 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:18,949 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-21 01:37:18,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 01:37:18,950 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:18,950 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 01:37:18,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:19,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:19,176 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:19,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:19,177 INFO L85 PathProgramCache]: Analyzing trace with hash 865667262, now seen corresponding path program 1 times [2021-11-21 01:37:19,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:19,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967900503] [2021-11-21 01:37:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:19,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:19,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:19,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:19,229 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:19,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967900503] [2021-11-21 01:37:19,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967900503] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:19,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [501786160] [2021-11-21 01:37:19,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:19,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:19,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:19,232 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:19,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:37:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:19,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 01:37:19,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:19,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:19,374 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:37:19,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [501786160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:37:19,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:37:19,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2021-11-21 01:37:19,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981124180] [2021-11-21 01:37:19,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:37:19,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:37:19,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:19,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:37:19,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:37:19,378 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:19,434 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-21 01:37:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 01:37:19,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-11-21 01:37:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:19,437 INFO L225 Difference]: With dead ends: 22 [2021-11-21 01:37:19,437 INFO L226 Difference]: Without dead ends: 21 [2021-11-21 01:37:19,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:37:19,444 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:19,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 1 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 01:37:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-11-21 01:37:19,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-11-21 01:37:19,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 20 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:19,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2021-11-21 01:37:19,457 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2021-11-21 01:37:19,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:19,457 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2021-11-21 01:37:19,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:19,458 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2021-11-21 01:37:19,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-11-21 01:37:19,459 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:19,459 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2021-11-21 01:37:19,494 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:19,679 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:19,680 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:19,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:19,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1065881398, now seen corresponding path program 1 times [2021-11-21 01:37:19,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:19,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320950632] [2021-11-21 01:37:19,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:19,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:19,770 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:19,770 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:19,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320950632] [2021-11-21 01:37:19,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320950632] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:19,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731913102] [2021-11-21 01:37:19,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:19,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:19,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:19,775 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:19,806 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:37:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:19,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:37:19,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:19,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:19,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:19,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731913102] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:19,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2024213307] [2021-11-21 01:37:19,934 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:37:19,934 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:37:19,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:37:19,935 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:37:19,935 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:37:21,301 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:37:22,022 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:37:22,022 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:37:22,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-21 01:37:22,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340879896] [2021-11-21 01:37:22,023 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:22,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:37:22,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:22,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:37:22,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2021-11-21 01:37:22,026 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:22,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:22,137 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-11-21 01:37:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:37:22,143 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-11-21 01:37:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:22,143 INFO L225 Difference]: With dead ends: 31 [2021-11-21 01:37:22,143 INFO L226 Difference]: Without dead ends: 30 [2021-11-21 01:37:22,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2021-11-21 01:37:22,145 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 25 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:22,147 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 8 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:37:22,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-11-21 01:37:22,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-11-21 01:37:22,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.1153846153846154) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2021-11-21 01:37:22,151 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 11 [2021-11-21 01:37:22,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:22,151 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2021-11-21 01:37:22,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 10 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:22,151 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2021-11-21 01:37:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 01:37:22,152 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:22,152 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1] [2021-11-21 01:37:22,197 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:22,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:22,375 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:22,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:22,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1075330740, now seen corresponding path program 2 times [2021-11-21 01:37:22,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:22,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077869540] [2021-11-21 01:37:22,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:22,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:22,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:22,509 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:22,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:22,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077869540] [2021-11-21 01:37:22,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077869540] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:22,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097052340] [2021-11-21 01:37:22,510 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:37:22,510 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:22,511 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:22,512 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:22,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:37:22,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-21 01:37:22,567 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:37:22,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 01:37:22,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:22,765 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:22,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:23,039 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:23,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097052340] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:23,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1825626608] [2021-11-21 01:37:23,042 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:37:23,043 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:37:23,043 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:37:23,043 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:37:23,043 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:37:24,539 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:37:25,282 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:37:25,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:37:25,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-11-21 01:37:25,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016451514] [2021-11-21 01:37:25,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:25,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-21 01:37:25,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:25,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-21 01:37:25,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=749, Unknown=0, NotChecked=0, Total=870 [2021-11-21 01:37:25,285 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:25,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:25,608 INFO L93 Difference]: Finished difference Result 44 states and 47 transitions. [2021-11-21 01:37:25,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-21 01:37:25,609 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-11-21 01:37:25,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:25,610 INFO L225 Difference]: With dead ends: 44 [2021-11-21 01:37:25,610 INFO L226 Difference]: Without dead ends: 43 [2021-11-21 01:37:25,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=249, Invalid=1233, Unknown=0, NotChecked=0, Total=1482 [2021-11-21 01:37:25,612 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 24 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:25,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 4 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:37:25,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-11-21 01:37:25,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2021-11-21 01:37:25,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 40 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:25,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 43 transitions. [2021-11-21 01:37:25,619 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 43 transitions. Word has length 19 [2021-11-21 01:37:25,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:25,620 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 43 transitions. [2021-11-21 01:37:25,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.5) internal successors, (55), 23 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:25,620 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 43 transitions. [2021-11-21 01:37:25,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-11-21 01:37:25,621 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:25,621 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1] [2021-11-21 01:37:25,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:25,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:25,839 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:25,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:25,840 INFO L85 PathProgramCache]: Analyzing trace with hash 953924228, now seen corresponding path program 2 times [2021-11-21 01:37:25,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:25,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096315795] [2021-11-21 01:37:25,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:25,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:25,959 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:25,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:25,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096315795] [2021-11-21 01:37:25,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096315795] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:25,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594080824] [2021-11-21 01:37:25,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 01:37:25,960 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:25,960 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:25,961 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:25,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:37:25,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-11-21 01:37:25,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:37:25,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-21 01:37:26,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:26,083 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:37:26,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:37:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:37:26,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1594080824] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:37:26,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [470236013] [2021-11-21 01:37:26,151 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:37:26,151 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:37:26,152 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:37:26,152 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:37:26,152 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:37:27,533 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:37:28,168 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:37:28,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:37:28,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 3, 3] total 14 [2021-11-21 01:37:28,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112172210] [2021-11-21 01:37:28,169 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:37:28,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-21 01:37:28,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:37:28,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-21 01:37:28,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-11-21 01:37:28,170 INFO L87 Difference]: Start difference. First operand 41 states and 43 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:28,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:37:28,388 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2021-11-21 01:37:28,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 01:37:28,388 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-11-21 01:37:28,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:37:28,389 INFO L225 Difference]: With dead ends: 41 [2021-11-21 01:37:28,389 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 01:37:28,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 225 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-11-21 01:37:28,394 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 01:37:28,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 01:37:28,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 01:37:28,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-21 01:37:28,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 39 states have (on average 1.0256410256410255) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:28,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-21 01:37:28,400 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 26 [2021-11-21 01:37:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:37:28,401 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-21 01:37:28,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 15 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:37:28,401 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-21 01:37:28,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 01:37:28,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:37:28,402 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1] [2021-11-21 01:37:28,450 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-21 01:37:28,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-11-21 01:37:28,623 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:37:28,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:37:28,624 INFO L85 PathProgramCache]: Analyzing trace with hash 237862964, now seen corresponding path program 3 times [2021-11-21 01:37:28,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:37:28,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133897057] [2021-11-21 01:37:28,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:37:28,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:37:28,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:37:28,897 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:28,897 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:37:28,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133897057] [2021-11-21 01:37:28,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133897057] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:37:28,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803428524] [2021-11-21 01:37:28,897 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 01:37:28,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:37:28,898 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:37:28,898 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:37:28,899 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:37:28,935 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 01:37:28,935 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 01:37:28,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 01:37:28,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:37:29,518 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:37:29,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:38:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:38:25,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803428524] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 01:38:25,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1082190807] [2021-11-21 01:38:25,655 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 01:38:25,655 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:38:25,655 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:38:25,655 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:38:25,655 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:38:26,887 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 01:38:27,776 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 01:38:27,777 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 01:38:27,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2021-11-21 01:38:27,777 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580578430] [2021-11-21 01:38:27,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 01:38:27,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-21 01:38:27,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:38:27,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-21 01:38:27,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=2487, Unknown=22, NotChecked=0, Total=2862 [2021-11-21 01:38:27,782 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 47 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:38:30,242 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse2 (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)))) (let ((.cse1 (+ (div (+ .cse2 2147483639) 2) 1)) (.cse13 (* 2 |c_ULTIMATE.start_main_~i~0#1|)) (.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse14 (* |c_ULTIMATE.start_main_~i~0#1| (- 1)))) (and (<= .cse0 (div .cse1 2)) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse2 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)) (<= (+ |c_ULTIMATE.start_main_~i~0#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483647) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse12 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|))) (let ((.cse8 (+ .cse12 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse7 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67|)) (.cse5 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse3 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse4 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse11 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72|)) (.cse9 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381|)) (.cse6 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165|)) (.cse10 (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|))) (or (<= (+ .cse3 |c_ULTIMATE.start_main_#t~post4#1| 15 .cse4) (+ .cse5 .cse6)) (<= (+ 2 .cse7) .cse8) (<= (+ .cse9 .cse6 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1| .cse10) (+ .cse3 2147483638 .cse4)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) (+ 2147483643 .cse11)) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 0) (<= (+ 2 |c_ULTIMATE.start_main_#t~post4#1|) |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ .cse11 7 .cse9 .cse6 .cse10) (+ .cse3 .cse4)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| 1)) (< .cse8 .cse7) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| .cse12 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| |aux_div_v_ULTIMATE.start_main_~sum~0#1_63_72| 10) 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 4) 4 (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 2)) 4) 1)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ .cse11 .cse9 .cse5 |c_ULTIMATE.start_main_#t~post4#1| 17) 0) (<= 0 (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| .cse11 .cse9 9 .cse5)) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| 1)) (<= (+ |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| |c_ULTIMATE.start_main_#t~post4#1| 1) (div (+ (* |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| (- 5)) (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483630) 2)) (<= (+ .cse3 .cse4 4) (+ .cse11 .cse9 .cse6 .cse10)))))) (<= .cse13 .cse1) (<= (+ |c_ULTIMATE.start_main_~sum~0#1| .cse13) 2147483646) (<= |c_ULTIMATE.start_main_~i~0#1| (div (+ .cse14 .cse2 2147483644) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| Int) (|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| Int)) (let ((.cse15 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381|)) (.cse23 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165|)) (.cse17 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|))) (let ((.cse19 (+ .cse17 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse18 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67|)) (.cse16 (* 2 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)) (.cse21 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse22 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|)) (.cse20 (+ .cse15 .cse23 |c_ULTIMATE.start_main_~sum~0#1| (* 4 |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129|)))) (or (<= 2147483636 (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| .cse15 .cse16 |c_ULTIMATE.start_main_~sum~0#1|)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= (+ (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| .cse17 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) 0) (<= (+ 2 .cse18) .cse19) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67| 1)) (<= (+ .cse15 .cse16 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483630) (< .cse19 .cse18) (<= .cse20 (+ .cse21 .cse22 2147483639)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| (- 2)) (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 4) 4 (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139| 2)) 4) 1)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_68_116_67_139|) (<= |aux_div_v_ULTIMATE.start_main_~sum~0#1_62_129| 0) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381_403_165| (+ |aux_div_aux_mod_v_ULTIMATE.start_main_~i~0#1_50_285_381| 1)) (<= (+ .cse21 14 |c_ULTIMATE.start_main_#t~post4#1| .cse22) (+ .cse16 .cse23)) (<= (+ 2147483649 .cse21 .cse22) .cse20))))) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~sum~0#1|) 2147483646) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63| 5) |c_ULTIMATE.start_main_~sum~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~i~0#1_49_107_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~sum~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= .cse0 (div (+ .cse2 2147483646) 2)) (<= |c_ULTIMATE.start_main_~i~0#1| (div (+ (- 1) (div (+ .cse14 .cse2 2147483639) 2)) 2))))) is different from false [2021-11-21 01:39:14,474 WARN L227 SmtUtils]: Spent 16.67s on a formula simplification. DAG size of input: 136 DAG size of output: 130 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:39:24,988 WARN L227 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 118 DAG size of output: 108 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:40:18,133 WARN L227 SmtUtils]: Spent 14.76s on a formula simplification. DAG size of input: 99 DAG size of output: 93 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:41:07,133 WARN L227 SmtUtils]: Spent 8.01s on a formula simplification. DAG size of input: 43 DAG size of output: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:41:08,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:41:08,422 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-21 01:41:08,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 01:41:08,422 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 39 [2021-11-21 01:41:08,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:41:08,423 INFO L225 Difference]: With dead ends: 81 [2021-11-21 01:41:08,424 INFO L226 Difference]: Without dead ends: 80 [2021-11-21 01:41:08,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1484 ImplicationChecksByTransitivity, 209.8s TimeCoverageRelationStatistics Valid=819, Invalid=4528, Unknown=59, NotChecked=144, Total=5550 [2021-11-21 01:41:08,428 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 57 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 205 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 01:41:08,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 3 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 181 Invalid, 0 Unknown, 205 Unchecked, 0.2s Time] [2021-11-21 01:41:08,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-21 01:41:08,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-21 01:41:08,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0126582278481013) internal successors, (80), 79 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:41:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-11-21 01:41:08,438 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 39 [2021-11-21 01:41:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:41:08,439 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-11-21 01:41:08,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 46 states have (on average 2.5) internal successors, (115), 47 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-21 01:41:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-11-21 01:41:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 01:41:08,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:41:08,442 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1] [2021-11-21 01:41:08,484 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:41:08,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-21 01:41:08,659 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 01:41:08,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:41:08,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1923662644, now seen corresponding path program 4 times [2021-11-21 01:41:08,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:41:08,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200965947] [2021-11-21 01:41:08,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:41:08,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:41:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:09,614 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:09,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:41:09,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200965947] [2021-11-21 01:41:09,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200965947] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:41:09,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011578004] [2021-11-21 01:41:09,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 01:41:09,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:41:09,615 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:41:09,617 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:41:09,618 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76a5717b-6343-44f3-8d76-b360ec7e99d9/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:41:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:41:09,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-21 01:41:09,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:41:11,440 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-21 01:41:11,441 INFO L328 TraceCheckSpWp]: Computing backward predicates...