./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark22_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_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/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_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/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_442395e2-c6f7-494c-8ac8-40981e1c21d8/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 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 00:00:32,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 00:00:32,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 00:00:32,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 00:00:32,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 00:00:32,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 00:00:32,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 00:00:32,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 00:00:32,898 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 00:00:32,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 00:00:32,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 00:00:32,902 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 00:00:32,902 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 00:00:32,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 00:00:32,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 00:00:32,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 00:00:32,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 00:00:32,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 00:00:32,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 00:00:32,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 00:00:32,929 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 00:00:32,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 00:00:32,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 00:00:32,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 00:00:32,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 00:00:32,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 00:00:32,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 00:00:32,947 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 00:00:32,948 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 00:00:32,949 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 00:00:32,950 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 00:00:32,951 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 00:00:32,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 00:00:32,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 00:00:32,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 00:00:32,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 00:00:32,955 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 00:00:32,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 00:00:32,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 00:00:32,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 00:00:32,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 00:00:32,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/config/svcomp-Overflow-32bit-Taipan_Default.epf [2021-11-21 00:00:32,983 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 00:00:32,987 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 00:00:32,987 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 00:00:32,988 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 00:00:32,989 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 00:00:32,989 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 00:00:32,989 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 00:00:32,989 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 00:00:32,990 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 00:00:32,990 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 00:00:32,991 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 00:00:32,991 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 00:00:32,991 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 00:00:32,992 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 00:00:32,992 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 00:00:32,992 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 00:00:32,992 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 00:00:32,993 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 00:00:32,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 00:00:32,994 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-21 00:00:32,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-21 00:00:32,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 00:00:32,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-21 00:00:32,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 00:00:32,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 00:00:32,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 00:00:32,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 00:00:32,996 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-11-21 00:00:32,996 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-21 00:00:32,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 00:00:32,997 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 00:00:32,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 00:00:32,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 00:00:32,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 00:00:32,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:00:32,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 00:00:32,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 00:00:32,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 00:00:32,999 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 00:00:32,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 00:00:32,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 00:00:33,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 00:00:33,000 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 00:00:33,001 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_442395e2-c6f7-494c-8ac8-40981e1c21d8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6ed0b12ce7ca8412687eea32cd5c4beaf5275fff5c5bfef18c07965c0f054672 [2021-11-21 00:00:33,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 00:00:33,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 00:00:33,274 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 00:00:33,275 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 00:00:33,276 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 00:00:33,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-11-21 00:00:33,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/data/9e9b5ab1e/4c5ff628d5024a14bfcad0e0849f7505/FLAG206c7a06f [2021-11-21 00:00:33,973 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 00:00:33,974 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i [2021-11-21 00:00:33,985 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/data/9e9b5ab1e/4c5ff628d5024a14bfcad0e0849f7505/FLAG206c7a06f [2021-11-21 00:00:34,002 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/data/9e9b5ab1e/4c5ff628d5024a14bfcad0e0849f7505 [2021-11-21 00:00:34,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 00:00:34,007 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 00:00:34,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 00:00:34,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 00:00:34,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 00:00:34,015 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224a310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34, skipping insertion in model container [2021-11-21 00:00:34,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,023 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 00:00:34,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 00:00:34,230 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_442395e2-c6f7-494c-8ac8-40981e1c21d8/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-11-21 00:00:34,245 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:00:34,256 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 00:00:34,273 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_442395e2-c6f7-494c-8ac8-40981e1c21d8/sv-benchmarks/c/loop-zilu/benchmark22_conjunctive.i[873,886] [2021-11-21 00:00:34,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 00:00:34,292 INFO L208 MainTranslator]: Completed translation [2021-11-21 00:00:34,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34 WrapperNode [2021-11-21 00:00:34,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 00:00:34,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 00:00:34,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 00:00:34,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 00:00:34,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,330 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 38 [2021-11-21 00:00:34,331 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 00:00:34,332 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 00:00:34,332 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 00:00:34,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 00:00:34,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,363 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 00:00:34,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 00:00:34,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 00:00:34,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 00:00:34,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (1/1) ... [2021-11-21 00:00:34,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 00:00:34,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:00:34,398 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 00:00:34,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 00:00:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 00:00:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 00:00:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 00:00:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 00:00:34,527 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 00:00:34,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 00:00:34,704 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 00:00:34,744 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 00:00:34,745 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-21 00:00:34,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:00:34 BoogieIcfgContainer [2021-11-21 00:00:34,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 00:00:34,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 00:00:34,755 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 00:00:34,759 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 00:00:34,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 12:00:34" (1/3) ... [2021-11-21 00:00:34,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296913be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:00:34, skipping insertion in model container [2021-11-21 00:00:34,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 12:00:34" (2/3) ... [2021-11-21 00:00:34,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@296913be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 12:00:34, skipping insertion in model container [2021-11-21 00:00:34,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 12:00:34" (3/3) ... [2021-11-21 00:00:34,764 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark22_conjunctive.i [2021-11-21 00:00:34,769 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 00:00:34,770 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-11-21 00:00:34,836 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 00:00:34,845 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 00:00:34,846 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-21 00:00:34,877 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 00:00:34,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-11-21 00:00:34,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:34,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-11-21 00:00:34,890 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 00:00:34,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:34,896 INFO L85 PathProgramCache]: Analyzing trace with hash 2092610, now seen corresponding path program 1 times [2021-11-21 00:00:34,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:34,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578503413] [2021-11-21 00:00:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:34,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:35,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:35,102 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 00:00:35,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:35,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578503413] [2021-11-21 00:00:35,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578503413] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:35,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:35,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:00:35,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112544436] [2021-11-21 00:00:35,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:35,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:35,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:35,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:35,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:35,154 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 00:00:35,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:35,196 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-11-21 00:00:35,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:35,199 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 00:00:35,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:35,207 INFO L225 Difference]: With dead ends: 19 [2021-11-21 00:00:35,216 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 00:00:35,224 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 00:00:35,229 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:35,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 12 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:00:35,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 00:00:35,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-11-21 00:00:35,261 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 00:00:35,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-11-21 00:00:35,263 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 4 [2021-11-21 00:00:35,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:35,263 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-11-21 00:00:35,264 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 00:00:35,264 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-11-21 00:00:35,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-21 00:00:35,264 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:35,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-21 00:00:35,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-21 00:00:35,265 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 00:00:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:35,266 INFO L85 PathProgramCache]: Analyzing trace with hash 64870960, now seen corresponding path program 1 times [2021-11-21 00:00:35,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:35,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204339836] [2021-11-21 00:00:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:35,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:35,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:35,297 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 00:00:35,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:35,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204339836] [2021-11-21 00:00:35,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204339836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:35,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:35,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-21 00:00:35,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592568174] [2021-11-21 00:00:35,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:35,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-21 00:00:35,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:35,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-21 00:00:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-21 00:00:35,302 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 00:00:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:35,325 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-21 00:00:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-21 00:00:35,326 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 00:00:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:35,327 INFO L225 Difference]: With dead ends: 15 [2021-11-21 00:00:35,327 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 00:00:35,327 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 00:00:35,329 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:35,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:00:35,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 00:00:35,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 00:00:35,335 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 00:00:35,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-21 00:00:35,335 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-11-21 00:00:35,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:35,336 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-21 00:00:35,336 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 00:00:35,336 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-21 00:00:35,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-11-21 00:00:35,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:35,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-11-21 00:00:35,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-21 00:00:35,338 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 00:00:35,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 2010999812, now seen corresponding path program 1 times [2021-11-21 00:00:35,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:35,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513081934] [2021-11-21 00:00:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:35,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:35,411 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 00:00:35,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:35,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513081934] [2021-11-21 00:00:35,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513081934] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:35,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:35,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:35,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191966150] [2021-11-21 00:00:35,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:35,415 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:00:35,415 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:35,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:00:35,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:00:35,417 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 00:00:35,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:35,483 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-11-21 00:00:35,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 00:00:35,497 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 00:00:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:35,498 INFO L225 Difference]: With dead ends: 18 [2021-11-21 00:00:35,498 INFO L226 Difference]: Without dead ends: 17 [2021-11-21 00:00:35,499 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 00:00:35,500 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 5 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:35,501 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 13 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:00:35,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-11-21 00:00:35,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-11-21 00:00:35,504 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 00:00:35,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-11-21 00:00:35,505 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 6 [2021-11-21 00:00:35,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:35,505 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-11-21 00:00:35,506 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 00:00:35,506 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-11-21 00:00:35,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-11-21 00:00:35,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:35,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:35,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-21 00:00:35,507 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 00:00:35,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:35,508 INFO L85 PathProgramCache]: Analyzing trace with hash -2083515214, now seen corresponding path program 1 times [2021-11-21 00:00:35,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:35,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789595953] [2021-11-21 00:00:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:35,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:35,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:35,583 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 00:00:35,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:35,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789595953] [2021-11-21 00:00:35,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789595953] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:35,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 00:00:35,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-21 00:00:35,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445732426] [2021-11-21 00:00:35,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:35,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-21 00:00:35,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:35,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-21 00:00:35,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-21 00:00:35,587 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 00:00:35,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:35,624 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-11-21 00:00:35,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-21 00:00:35,625 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 00:00:35,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:35,626 INFO L225 Difference]: With dead ends: 15 [2021-11-21 00:00:35,626 INFO L226 Difference]: Without dead ends: 14 [2021-11-21 00:00:35,627 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 00:00:35,636 INFO L933 BasicCegarLoop]: 2 mSDtfsCounter, 6 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:35,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 4 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:00:35,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-21 00:00:35,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-21 00:00:35,640 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 00:00:35,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-11-21 00:00:35,641 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 7 [2021-11-21 00:00:35,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:35,641 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-11-21 00:00:35,641 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 00:00:35,641 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-11-21 00:00:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-21 00:00:35,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:35,642 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:35,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-21 00:00:35,643 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 00:00:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash -803359244, now seen corresponding path program 1 times [2021-11-21 00:00:35,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:35,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558074624] [2021-11-21 00:00:35,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:35,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:35,744 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 00:00:35,744 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:35,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558074624] [2021-11-21 00:00:35,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558074624] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:00:35,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173478874] [2021-11-21 00:00:35,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:35,745 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:35,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:00:35,752 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:00:35,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 00:00:35,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:35,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:00:35,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:00:36,005 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 00:00:36,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:00:36,103 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 00:00:36,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173478874] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:00:36,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1764875356] [2021-11-21 00:00:36,136 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:00:36,137 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:00:36,145 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:00:36,152 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:00:36,155 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:00:37,378 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:00:37,705 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:00:37,705 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:00:37,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2021-11-21 00:00:37,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639132865] [2021-11-21 00:00:37,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:00:37,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-21 00:00:37,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:37,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-21 00:00:37,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-21 00:00:37,708 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 00:00:37,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:37,814 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-11-21 00:00:37,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 00:00:37,815 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 00:00:37,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:37,816 INFO L225 Difference]: With dead ends: 25 [2021-11-21 00:00:37,816 INFO L226 Difference]: Without dead ends: 24 [2021-11-21 00:00:37,817 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2021-11-21 00:00:37,818 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 15 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:37,818 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 13 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:00:37,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-11-21 00:00:37,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2021-11-21 00:00:37,822 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 00:00:37,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-11-21 00:00:37,823 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 9 [2021-11-21 00:00:37,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:37,823 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-11-21 00:00:37,823 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 00:00:37,824 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-11-21 00:00:37,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-11-21 00:00:37,829 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:37,829 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-11-21 00:00:37,870 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 00:00:38,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:38,053 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 00:00:38,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:38,054 INFO L85 PathProgramCache]: Analyzing trace with hash 865667262, now seen corresponding path program 1 times [2021-11-21 00:00:38,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:38,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352822821] [2021-11-21 00:00:38,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:38,055 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:38,098 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 00:00:38,098 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:38,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352822821] [2021-11-21 00:00:38,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352822821] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:00:38,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1051585620] [2021-11-21 00:00:38,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:38,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:38,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:00:38,100 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:00:38,103 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 00:00:38,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:38,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-21 00:00:38,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:00:38,201 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 00:00:38,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:00:38,251 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 00:00:38,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1051585620] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:00:38,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [242252034] [2021-11-21 00:00:38,253 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:00:38,253 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:00:38,254 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:00:38,254 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:00:38,254 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:00:39,180 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:00:39,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [242252034] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 00:00:39,459 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:00:39,459 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4, 4, 4] total 15 [2021-11-21 00:00:39,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170400355] [2021-11-21 00:00:39,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 00:00:39,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 00:00:39,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:39,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 00:00:39,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2021-11-21 00:00:39,462 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 00:00:39,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:39,886 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-11-21 00:00:39,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-21 00:00:39,887 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 00:00:39,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:39,888 INFO L225 Difference]: With dead ends: 22 [2021-11-21 00:00:39,888 INFO L226 Difference]: Without dead ends: 20 [2021-11-21 00:00:39,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=115, Invalid=227, Unknown=0, NotChecked=0, Total=342 [2021-11-21 00:00:39,889 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 18 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:39,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 3 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-21 00:00:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-21 00:00:39,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-21 00:00:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.0526315789473684) internal successors, (20), 19 states have internal predecessors, (20), 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 00:00:39,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-11-21 00:00:39,894 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 10 [2021-11-21 00:00:39,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:39,895 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-11-21 00:00:39,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 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 00:00:39,895 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-11-21 00:00:39,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-11-21 00:00:39,896 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:39,902 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1] [2021-11-21 00:00:39,937 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 00:00:40,120 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 00:00:40,121 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 00:00:40,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:40,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1075330740, now seen corresponding path program 2 times [2021-11-21 00:00:40,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:40,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240503717] [2021-11-21 00:00:40,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:40,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:40,217 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 00:00:40,218 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:40,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240503717] [2021-11-21 00:00:40,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240503717] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:00:40,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [970276847] [2021-11-21 00:00:40,218 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-21 00:00:40,218 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:40,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:00:40,219 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:00:40,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 00:00:40,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-11-21 00:00:40,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:00:40,294 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-21 00:00:40,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:00:40,543 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 00:00:40,544 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:00:40,825 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 00:00:40,825 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [970276847] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:00:40,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [800329831] [2021-11-21 00:00:40,828 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:00:40,828 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:00:40,828 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:00:40,828 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:00:40,829 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:00:41,701 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:00:42,031 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:00:42,031 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:00:42,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2021-11-21 00:00:42,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619851559] [2021-11-21 00:00:42,032 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:00:42,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-21 00:00:42,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:00:42,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-21 00:00:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=695, Unknown=0, NotChecked=0, Total=812 [2021-11-21 00:00:42,034 INFO L87 Difference]: Start difference. First operand 20 states and 20 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 00:00:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:00:42,310 INFO L93 Difference]: Finished difference Result 41 states and 44 transitions. [2021-11-21 00:00:42,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-21 00:00:42,310 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 00:00:42,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:00:42,311 INFO L225 Difference]: With dead ends: 41 [2021-11-21 00:00:42,311 INFO L226 Difference]: Without dead ends: 40 [2021-11-21 00:00:42,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2021-11-21 00:00:42,313 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-21 00:00:42,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 22 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-21 00:00:42,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-11-21 00:00:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-21 00:00:42,321 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 00:00:42,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-11-21 00:00:42,322 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 19 [2021-11-21 00:00:42,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:00:42,323 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-11-21 00:00:42,323 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 00:00:42,323 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-11-21 00:00:42,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-11-21 00:00:42,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:00:42,325 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1] [2021-11-21 00:00:42,363 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 00:00:42,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:42,533 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 00:00:42,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:00:42,533 INFO L85 PathProgramCache]: Analyzing trace with hash 237862964, now seen corresponding path program 3 times [2021-11-21 00:00:42,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:00:42,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943844919] [2021-11-21 00:00:42,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:00:42,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:00:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:00:42,781 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 00:00:42,781 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:00:42,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943844919] [2021-11-21 00:00:42,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943844919] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:00:42,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472509876] [2021-11-21 00:00:42,782 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-11-21 00:00:42,782 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:00:42,782 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:00:42,784 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:00:42,787 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 00:00:42,822 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-11-21 00:00:42,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-21 00:00:42,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-21 00:00:42,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:00:43,342 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 00:00:43,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 00:01:39,720 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 00:01:39,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472509876] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-21 00:01:39,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1748640361] [2021-11-21 00:01:39,723 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2021-11-21 00:01:39,723 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 00:01:39,724 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 00:01:39,724 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 00:01:39,724 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 00:01:40,713 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-21 00:01:41,280 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2021-11-21 00:01:41,281 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-21 00:01:41,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 46 [2021-11-21 00:01:41,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107263900] [2021-11-21 00:01:41,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-21 00:01:41,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-11-21 00:01:41,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 00:01:41,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-11-21 00:01:41,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=2384, Unknown=23, NotChecked=0, Total=2756 [2021-11-21 00:01:41,285 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 00:01:43,540 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse3 (* |c_ULTIMATE.start_main_~x~0#1| (- 1)))) (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse2 (* |c_ULTIMATE.start_main_~y~0#1| (- 1))) (.cse4 (* 2 |c_ULTIMATE.start_main_~y~0#1|)) (.cse1 (+ (div (+ .cse3 2147483639) 2) 1))) (and (<= .cse0 (div .cse1 2)) (<= |c_ULTIMATE.start_main_~y~0#1| (div (+ (- 1) (div (+ .cse2 .cse3 2147483639) 2)) 2)) (<= (+ .cse4 |c_ULTIMATE.start_main_~x~0#1|) 2147483646) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~x~0#1|) 2147483646) (<= .cse0 (div (+ .cse3 2147483646) 2)) (forall ((|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| Int) (|aux_div_v_ULTIMATE.start_main_~x~0#1_53_70| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401| Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423| Int) (|aux_div_v_ULTIMATE.start_main_~x~0#1_52_127| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| Int)) (let ((.cse15 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|))) (let ((.cse13 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423|)) (.cse6 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67|)) (.cse5 (+ .cse15 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|)) (.cse14 (* 2 |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127|)) (.cse10 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|)) (.cse11 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|)) (.cse7 (* 4 |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127|)) (.cse12 (* 2 |aux_div_v_ULTIMATE.start_main_~x~0#1_53_70|)) (.cse8 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117|)) (.cse9 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401|))) (or (< .cse5 .cse6) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~x~0#1| .cse7 .cse8 .cse9) (+ 2147483638 .cse10 .cse11)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~x~0#1|) (+ 2147483643 .cse12)) (<= (+ 5 .cse8) .cse13) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423| (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 1)) (<= (+ .cse10 .cse11 |c_ULTIMATE.start_main_#t~post4#1| 15) (+ .cse13 .cse14)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127| 1) (div (+ (* |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401| (- 5)) (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) 2147483630) 2)) (<= (+ 5 .cse13) .cse8) (<= |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127| 0) (<= (+ 7 .cse7 .cse12 .cse8 .cse9) (+ .cse10 .cse11)) (<= 0 (+ 9 .cse14 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67| .cse12 .cse9)) (<= (+ 2 .cse6) .cse5) (<= (+ .cse14 |c_ULTIMATE.start_main_#t~post4#1| 17 .cse12 .cse9) 0) (<= (+ .cse15 |c_ULTIMATE.start_main_#t~post4#1| |aux_div_v_ULTIMATE.start_main_~x~0#1_53_70| 10 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|) 0) (<= (+ 2 |c_ULTIMATE.start_main_#t~post4#1|) |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67|) (<= (+ .cse10 .cse11 4) (+ .cse7 .cse12 .cse8 .cse9)) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 0) (<= |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117| (+ |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401| 1)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127| (- 2)) (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 2) 4 (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 4)) 4) 1)))))) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63| 5) |c_ULTIMATE.start_main_~x~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse3 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)) (<= |c_ULTIMATE.start_main_~y~0#1| (div (+ .cse2 2147483644 .cse3) 2)) (forall ((|aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| Int) (|aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117| Int) (|aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401| Int) (|aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67| Int) (|aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423| Int) (|aux_div_v_ULTIMATE.start_main_~x~0#1_52_127| Int) (|aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| Int)) (let ((.cse21 (* 5 |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117|)) (.cse19 (* 5 |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401|)) (.cse20 (* 2 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|))) (let ((.cse22 (* 5 |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423|)) (.cse17 (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67|)) (.cse16 (+ .cse20 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|)) (.cse18 (* 2 |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127|)) (.cse25 (+ |c_ULTIMATE.start_main_~x~0#1| (* 4 |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127|) .cse21 .cse19)) (.cse23 (* 4 |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|)) (.cse24 (* 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|))) (or (< .cse16 .cse17) (<= (+ .cse18 |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~x~0#1| .cse19) 2147483630) (<= (+ .cse20 (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) 2147483646) (- 2)) 9 |c_ULTIMATE.start_main_#t~post4#1| |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|) 0) (<= (+ 5 .cse21) .cse22) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423| (+ |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 1)) (<= (+ .cse23 14 .cse24 |c_ULTIMATE.start_main_#t~post4#1|) (+ .cse22 .cse18)) (<= 2 |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139|) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67|) (<= (+ 5 .cse22) .cse21) (<= |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127| 0) (<= (+ 2147483649 .cse23 .cse24) .cse25) (<= (+ 2 .cse17) .cse16) (<= 2147483636 (+ .cse18 |c_ULTIMATE.start_main_~x~0#1| |aux_div_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67| .cse19)) (<= .cse25 (+ .cse23 .cse24 2147483639)) (< |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 0) (<= |aux_div_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117| (+ |aux_div_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401| 1)) (<= |aux_div_aux_mod_aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0#1_41_283_117_401_423| (+ (div (+ (* |aux_div_v_ULTIMATE.start_main_~x~0#1_52_127| (- 2)) (* |aux_mod_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 2) 4 (* |aux_div_aux_mod_aux_div_v_ULTIMATE.start_main_#t~post4#1_53_114_67_139| 4)) 4) 1)))))) (<= .cse4 .cse1) (<= (+ |c_ULTIMATE.start_main_~x~0#1| |c_ULTIMATE.start_main_~y~0#1|) 2147483647)))) is different from false [2021-11-21 00:02:49,033 WARN L227 SmtUtils]: Spent 19.23s on a formula simplification. DAG size of input: 142 DAG size of output: 136 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:02:59,473 WARN L227 SmtUtils]: Spent 8.25s on a formula simplification. DAG size of input: 124 DAG size of output: 114 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:02,490 WARN L227 SmtUtils]: Spent 17.43s on a formula simplification. DAG size of input: 105 DAG size of output: 99 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 00:04:08,712 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (+ |c_ULTIMATE.start_main_#t~post4#1| 1)) (.cse1 (* |c_ULTIMATE.start_main_~x~0#1| (- 1)))) (and (<= .cse0 (div (+ (div (+ .cse1 2147483639) 2) 1) 2)) (<= (+ |c_ULTIMATE.start_main_#t~post4#1| |c_ULTIMATE.start_main_~x~0#1|) 2147483646) (<= .cse0 (div (+ .cse1 2147483646) 2)) (forall ((|aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63| Int)) (or (<= (+ |c_ULTIMATE.start_main_#t~post4#1| 1) |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63|) (<= (div (+ (* |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63| 5) |c_ULTIMATE.start_main_~x~0#1| (- 2147483637)) (- 2)) 0) (<= (+ (* 2 |aux_div_aux_div_v_ULTIMATE.start_main_~y~0#1_40_105_63|) 1) (div (+ (* |c_ULTIMATE.start_main_~x~0#1| (- 1)) (* |c_ULTIMATE.start_main_#t~post4#1| (- 1)) 2147483634) 2)))) (<= |c_ULTIMATE.start_main_#t~post4#1| (div (+ .cse1 2147483641 (* |c_ULTIMATE.start_main_#t~post4#1| (- 1))) 2)))) is different from false [2021-11-21 00:04:09,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 00:04:09,341 INFO L93 Difference]: Finished difference Result 81 states and 88 transitions. [2021-11-21 00:04:09,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-21 00:04:09,342 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 00:04:09,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 00:04:09,343 INFO L225 Difference]: With dead ends: 81 [2021-11-21 00:04:09,343 INFO L226 Difference]: Without dead ends: 80 [2021-11-21 00:04:09,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1384 ImplicationChecksByTransitivity, 197.0s TimeCoverageRelationStatistics Valid=865, Invalid=4192, Unknown=63, NotChecked=282, Total=5402 [2021-11-21 00:04:09,347 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 50 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 165 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-21 00:04:09,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 38 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 163 Invalid, 0 Unknown, 165 Unchecked, 0.2s Time] [2021-11-21 00:04:09,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-11-21 00:04:09,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2021-11-21 00:04:09,359 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 00:04:09,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-11-21 00:04:09,361 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 39 [2021-11-21 00:04:09,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 00:04:09,361 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-11-21 00:04:09,362 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 00:04:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-11-21 00:04:09,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 00:04:09,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 00:04:09,366 INFO L514 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1] [2021-11-21 00:04:09,403 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 00:04:09,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:09,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-11-21 00:04:09,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 00:04:09,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1923662644, now seen corresponding path program 4 times [2021-11-21 00:04:09,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 00:04:09,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214495001] [2021-11-21 00:04:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 00:04:09,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 00:04:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:10,396 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 00:04:10,397 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 00:04:10,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214495001] [2021-11-21 00:04:10,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214495001] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 00:04:10,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858920535] [2021-11-21 00:04:10,397 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-11-21 00:04:10,398 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 00:04:10,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 00:04:10,404 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 00:04:10,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_442395e2-c6f7-494c-8ac8-40981e1c21d8/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 00:04:10,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 00:04:10,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 48 conjunts are in the unsatisfiable core [2021-11-21 00:04:10,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 00:04:12,360 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 00:04:12,360 INFO L328 TraceCheckSpWp]: Computing backward predicates...