./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan --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 139ef67971e7ed714d59975d45ea043b5c6a1676 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:08:11,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:08:11,445 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:08:11,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:08:11,488 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:08:11,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:08:11,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:08:11,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:08:11,512 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:08:11,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:08:11,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:08:11,528 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:08:11,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:08:11,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:08:11,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:08:11,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:08:11,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:08:11,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:08:11,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:08:11,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:08:11,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:08:11,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:08:11,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:08:11,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:08:11,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:08:11,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:08:11,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:08:11,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:08:11,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:08:11,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:08:11,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:08:11,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:08:11,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:08:11,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:08:11,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:08:11,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:08:11,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:08:11,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:08:11,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:08:11,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:08:11,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:08:11,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-22 13:08:11,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:08:11,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:08:11,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:08:11,620 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:08:11,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:08:11,620 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:08:11,620 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:08:11,620 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:08:11,621 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:08:11,621 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:08:11,622 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:08:11,622 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:08:11,622 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:08:11,622 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:08:11,623 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:08:11,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:08:11,624 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:08:11,624 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-22 13:08:11,624 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:08:11,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:08:11,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:08:11,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:08:11,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:08:11,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:08:11,625 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-22 13:08:11,626 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:08:11,626 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:08:11,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:08:11,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:08:11,628 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:08:11,628 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:08:11,629 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:08:11,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:11,629 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:08:11,629 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:08:11,630 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:08:11,630 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:08:11,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:08:11,630 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:08:11,630 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:08:11,630 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:08:11,631 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-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 139ef67971e7ed714d59975d45ea043b5c6a1676 [2020-11-22 13:08:11,944 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:08:11,976 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:08:11,989 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:08:11,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:08:11,991 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:08:11,992 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2020-11-22 13:08:12,066 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/data/551e62517/491b26359daf4580936d470a5f9eb690/FLAG658c00aa5 [2020-11-22 13:08:12,518 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:08:12,519 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2020-11-22 13:08:12,539 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/data/551e62517/491b26359daf4580936d470a5f9eb690/FLAG658c00aa5 [2020-11-22 13:08:12,894 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/data/551e62517/491b26359daf4580936d470a5f9eb690 [2020-11-22 13:08:12,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:08:12,901 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:08:12,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:12,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:08:12,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:08:12,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:12" (1/1) ... [2020-11-22 13:08:12,911 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ed3302c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:12, skipping insertion in model container [2020-11-22 13:08:12,911 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:08:12" (1/1) ... [2020-11-22 13:08:12,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:08:12,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:08:13,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:13,261 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:08:13,334 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:08:13,352 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:08:13,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13 WrapperNode [2020-11-22 13:08:13,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:08:13,354 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:13,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:08:13,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:08:13,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,437 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:08:13,438 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:08:13,438 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:08:13,438 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:08:13,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,474 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,474 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,483 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... [2020-11-22 13:08:13,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:08:13,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:08:13,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:08:13,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:08:13,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:08:13,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:08:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:08:13,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:08:13,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:08:13,815 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-22 13:08:16,746 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !false; [2020-11-22 13:08:16,746 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume false; [2020-11-22 13:08:17,115 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:08:17,115 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-22 13:08:17,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:17 BoogieIcfgContainer [2020-11-22 13:08:17,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:08:17,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:08:17,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:08:17,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:08:17,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:08:12" (1/3) ... [2020-11-22 13:08:17,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a078f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:17, skipping insertion in model container [2020-11-22 13:08:17,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:08:13" (2/3) ... [2020-11-22 13:08:17,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a078f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:08:17, skipping insertion in model container [2020-11-22 13:08:17,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:17" (3/3) ... [2020-11-22 13:08:17,128 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a_alt.BV.c.cil.c [2020-11-22 13:08:17,139 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:08:17,148 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-11-22 13:08:17,176 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-22 13:08:17,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:08:17,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:08:17,216 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:08:17,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:08:17,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:08:17,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:08:17,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:08:17,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:08:17,239 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-11-22 13:08:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-22 13:08:17,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:17,245 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:17,245 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:17,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:17,251 INFO L82 PathProgramCache]: Analyzing trace with hash -415170221, now seen corresponding path program 1 times [2020-11-22 13:08:17,262 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:17,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066533470] [2020-11-22 13:08:17,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:17,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:17,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066533470] [2020-11-22 13:08:17,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:17,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:17,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483811270] [2020-11-22 13:08:17,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:17,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:17,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:17,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:17,529 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 3 states. [2020-11-22 13:08:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:17,793 INFO L93 Difference]: Finished difference Result 278 states and 447 transitions. [2020-11-22 13:08:17,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:17,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-22 13:08:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:17,806 INFO L225 Difference]: With dead ends: 278 [2020-11-22 13:08:17,807 INFO L226 Difference]: Without dead ends: 141 [2020-11-22 13:08:17,813 INFO L677 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 [2020-11-22 13:08:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-22 13:08:17,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-11-22 13:08:17,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-22 13:08:17,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 197 transitions. [2020-11-22 13:08:17,860 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 197 transitions. Word has length 11 [2020-11-22 13:08:17,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:17,861 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 197 transitions. [2020-11-22 13:08:17,861 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:17,861 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 197 transitions. [2020-11-22 13:08:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-22 13:08:17,862 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:17,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:17,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:08:17,862 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:17,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:17,863 INFO L82 PathProgramCache]: Analyzing trace with hash -1854593226, now seen corresponding path program 1 times [2020-11-22 13:08:17,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:17,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410251703] [2020-11-22 13:08:17,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:17,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:17,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410251703] [2020-11-22 13:08:17,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:17,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:17,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734541367] [2020-11-22 13:08:17,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:17,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:17,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:17,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:17,920 INFO L87 Difference]: Start difference. First operand 141 states and 197 transitions. Second operand 3 states. [2020-11-22 13:08:20,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:20,178 INFO L93 Difference]: Finished difference Result 289 states and 403 transitions. [2020-11-22 13:08:20,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:20,196 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-22 13:08:20,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:20,198 INFO L225 Difference]: With dead ends: 289 [2020-11-22 13:08:20,198 INFO L226 Difference]: Without dead ends: 150 [2020-11-22 13:08:20,199 INFO L677 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 [2020-11-22 13:08:20,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-22 13:08:20,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 142. [2020-11-22 13:08:20,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-22 13:08:20,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2020-11-22 13:08:20,212 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 13 [2020-11-22 13:08:20,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:20,212 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2020-11-22 13:08:20,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:20,213 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2020-11-22 13:08:20,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-22 13:08:20,213 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:20,214 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:20,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:08:20,214 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:20,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:20,215 INFO L82 PathProgramCache]: Analyzing trace with hash -96679734, now seen corresponding path program 1 times [2020-11-22 13:08:20,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:20,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829452904] [2020-11-22 13:08:20,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:20,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:20,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829452904] [2020-11-22 13:08:20,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:20,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:20,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27980563] [2020-11-22 13:08:20,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:20,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:20,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:20,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:20,293 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand 3 states. [2020-11-22 13:08:20,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:20,551 INFO L93 Difference]: Finished difference Result 291 states and 405 transitions. [2020-11-22 13:08:20,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:20,554 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-22 13:08:20,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:20,555 INFO L225 Difference]: With dead ends: 291 [2020-11-22 13:08:20,556 INFO L226 Difference]: Without dead ends: 151 [2020-11-22 13:08:20,557 INFO L677 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 [2020-11-22 13:08:20,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-22 13:08:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2020-11-22 13:08:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-22 13:08:20,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 199 transitions. [2020-11-22 13:08:20,575 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 199 transitions. Word has length 14 [2020-11-22 13:08:20,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:20,575 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 199 transitions. [2020-11-22 13:08:20,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:20,575 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 199 transitions. [2020-11-22 13:08:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-22 13:08:20,576 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:20,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:20,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:08:20,577 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:20,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:20,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1883274053, now seen corresponding path program 1 times [2020-11-22 13:08:20,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:20,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133434792] [2020-11-22 13:08:20,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:20,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:20,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133434792] [2020-11-22 13:08:20,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:20,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:20,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917161409] [2020-11-22 13:08:20,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:20,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:20,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:20,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:20,654 INFO L87 Difference]: Start difference. First operand 143 states and 199 transitions. Second operand 3 states. [2020-11-22 13:08:21,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:21,130 INFO L93 Difference]: Finished difference Result 293 states and 407 transitions. [2020-11-22 13:08:21,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:21,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-22 13:08:21,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:21,138 INFO L225 Difference]: With dead ends: 293 [2020-11-22 13:08:21,138 INFO L226 Difference]: Without dead ends: 152 [2020-11-22 13:08:21,139 INFO L677 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 [2020-11-22 13:08:21,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-22 13:08:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2020-11-22 13:08:21,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-22 13:08:21,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2020-11-22 13:08:21,154 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 15 [2020-11-22 13:08:21,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:21,155 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2020-11-22 13:08:21,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:21,155 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2020-11-22 13:08:21,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-22 13:08:21,161 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:21,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:21,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-22 13:08:21,176 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:21,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:21,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1880460817, now seen corresponding path program 1 times [2020-11-22 13:08:21,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:21,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813130760] [2020-11-22 13:08:21,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:21,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:21,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813130760] [2020-11-22 13:08:21,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:21,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:21,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591344123] [2020-11-22 13:08:21,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:21,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:21,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:21,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:21,252 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 3 states. [2020-11-22 13:08:21,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:21,500 INFO L93 Difference]: Finished difference Result 295 states and 409 transitions. [2020-11-22 13:08:21,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:21,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-22 13:08:21,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:21,502 INFO L225 Difference]: With dead ends: 295 [2020-11-22 13:08:21,502 INFO L226 Difference]: Without dead ends: 153 [2020-11-22 13:08:21,503 INFO L677 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 [2020-11-22 13:08:21,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-22 13:08:21,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2020-11-22 13:08:21,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-22 13:08:21,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 201 transitions. [2020-11-22 13:08:21,514 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 201 transitions. Word has length 16 [2020-11-22 13:08:21,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:21,514 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 201 transitions. [2020-11-22 13:08:21,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:21,515 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 201 transitions. [2020-11-22 13:08:21,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-22 13:08:21,516 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:21,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:21,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-22 13:08:21,516 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:21,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:21,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1806727271, now seen corresponding path program 1 times [2020-11-22 13:08:21,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:21,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511977991] [2020-11-22 13:08:21,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:21,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:21,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:21,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511977991] [2020-11-22 13:08:21,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:21,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:21,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799235125] [2020-11-22 13:08:21,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:21,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:21,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:21,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:21,610 INFO L87 Difference]: Start difference. First operand 145 states and 201 transitions. Second operand 3 states. [2020-11-22 13:08:21,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:21,845 INFO L93 Difference]: Finished difference Result 325 states and 457 transitions. [2020-11-22 13:08:21,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:21,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-22 13:08:21,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:21,847 INFO L225 Difference]: With dead ends: 325 [2020-11-22 13:08:21,847 INFO L226 Difference]: Without dead ends: 182 [2020-11-22 13:08:21,848 INFO L677 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 [2020-11-22 13:08:21,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-22 13:08:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2020-11-22 13:08:21,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-22 13:08:21,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 237 transitions. [2020-11-22 13:08:21,859 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 237 transitions. Word has length 26 [2020-11-22 13:08:21,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:21,860 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 237 transitions. [2020-11-22 13:08:21,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:21,860 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 237 transitions. [2020-11-22 13:08:21,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-22 13:08:21,861 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:21,861 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:21,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-22 13:08:21,862 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:21,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:21,863 INFO L82 PathProgramCache]: Analyzing trace with hash 649342501, now seen corresponding path program 1 times [2020-11-22 13:08:21,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:21,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324015271] [2020-11-22 13:08:21,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:21,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:21,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:21,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324015271] [2020-11-22 13:08:21,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:21,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:21,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847081487] [2020-11-22 13:08:21,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:21,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:21,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:21,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:21,917 INFO L87 Difference]: Start difference. First operand 168 states and 237 transitions. Second operand 3 states. [2020-11-22 13:08:22,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:22,142 INFO L93 Difference]: Finished difference Result 360 states and 516 transitions. [2020-11-22 13:08:22,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:22,142 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-22 13:08:22,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:22,143 INFO L225 Difference]: With dead ends: 360 [2020-11-22 13:08:22,144 INFO L226 Difference]: Without dead ends: 194 [2020-11-22 13:08:22,144 INFO L677 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 [2020-11-22 13:08:22,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-22 13:08:22,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 180. [2020-11-22 13:08:22,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-22 13:08:22,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 260 transitions. [2020-11-22 13:08:22,153 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 260 transitions. Word has length 27 [2020-11-22 13:08:22,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:22,154 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 260 transitions. [2020-11-22 13:08:22,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 260 transitions. [2020-11-22 13:08:22,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-22 13:08:22,158 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:22,158 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:22,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-22 13:08:22,158 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:22,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1041355235, now seen corresponding path program 1 times [2020-11-22 13:08:22,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:22,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [384594740] [2020-11-22 13:08:22,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:22,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:22,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [384594740] [2020-11-22 13:08:22,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:22,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:22,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051411347] [2020-11-22 13:08:22,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:22,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:22,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:22,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:22,232 INFO L87 Difference]: Start difference. First operand 180 states and 260 transitions. Second operand 3 states. [2020-11-22 13:08:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:23,035 INFO L93 Difference]: Finished difference Result 387 states and 565 transitions. [2020-11-22 13:08:23,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:23,037 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-11-22 13:08:23,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:23,038 INFO L225 Difference]: With dead ends: 387 [2020-11-22 13:08:23,039 INFO L226 Difference]: Without dead ends: 209 [2020-11-22 13:08:23,039 INFO L677 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 [2020-11-22 13:08:23,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-22 13:08:23,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-11-22 13:08:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-22 13:08:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 306 transitions. [2020-11-22 13:08:23,050 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 306 transitions. Word has length 38 [2020-11-22 13:08:23,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:23,050 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 306 transitions. [2020-11-22 13:08:23,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:23,051 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 306 transitions. [2020-11-22 13:08:23,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-22 13:08:23,053 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:23,053 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:23,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-22 13:08:23,053 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:23,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:23,054 INFO L82 PathProgramCache]: Analyzing trace with hash 579005067, now seen corresponding path program 1 times [2020-11-22 13:08:23,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:23,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583272416] [2020-11-22 13:08:23,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:23,067 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:23,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [971401091] [2020-11-22 13:08:23,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:23,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-22 13:08:23,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 13:08:23,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:23,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 13:08:23,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:23,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583272416] [2020-11-22 13:08:23,261 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 13:08:23,261 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [971401091] [2020-11-22 13:08:23,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:23,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-22 13:08:23,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132829180] [2020-11-22 13:08:23,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:08:23,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:23,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:08:23,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:23,263 INFO L87 Difference]: Start difference. First operand 209 states and 306 transitions. Second operand 4 states. [2020-11-22 13:08:23,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:23,771 INFO L93 Difference]: Finished difference Result 515 states and 773 transitions. [2020-11-22 13:08:23,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:08:23,775 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-11-22 13:08:23,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:23,777 INFO L225 Difference]: With dead ends: 515 [2020-11-22 13:08:23,777 INFO L226 Difference]: Without dead ends: 308 [2020-11-22 13:08:23,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:08:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-11-22 13:08:23,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2020-11-22 13:08:23,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-11-22 13:08:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 410 transitions. [2020-11-22 13:08:23,803 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 410 transitions. Word has length 38 [2020-11-22 13:08:23,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:23,803 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 410 transitions. [2020-11-22 13:08:23,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:08:23,803 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 410 transitions. [2020-11-22 13:08:23,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-22 13:08:23,805 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:23,805 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:24,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-22 13:08:24,032 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:24,033 INFO L82 PathProgramCache]: Analyzing trace with hash -393642880, now seen corresponding path program 1 times [2020-11-22 13:08:24,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:24,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692732504] [2020-11-22 13:08:24,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:24,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:08:24,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692732504] [2020-11-22 13:08:24,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:24,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-22 13:08:24,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803663950] [2020-11-22 13:08:24,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:24,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:24,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:24,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:24,104 INFO L87 Difference]: Start difference. First operand 292 states and 410 transitions. Second operand 3 states. [2020-11-22 13:08:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:24,557 INFO L93 Difference]: Finished difference Result 380 states and 530 transitions. [2020-11-22 13:08:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:24,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-11-22 13:08:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:24,560 INFO L225 Difference]: With dead ends: 380 [2020-11-22 13:08:24,560 INFO L226 Difference]: Without dead ends: 349 [2020-11-22 13:08:24,561 INFO L677 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 [2020-11-22 13:08:24,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-11-22 13:08:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2020-11-22 13:08:24,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-11-22 13:08:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 496 transitions. [2020-11-22 13:08:24,577 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 496 transitions. Word has length 40 [2020-11-22 13:08:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:24,577 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 496 transitions. [2020-11-22 13:08:24,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 496 transitions. [2020-11-22 13:08:24,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-22 13:08:24,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:24,580 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:24,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-22 13:08:24,580 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:24,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:24,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1931707924, now seen corresponding path program 1 times [2020-11-22 13:08:24,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:24,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287835648] [2020-11-22 13:08:24,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:24,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:08:24,634 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:08:24,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287835648] [2020-11-22 13:08:24,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:08:24,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:08:24,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283028747] [2020-11-22 13:08:24,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 13:08:24,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:08:24,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 13:08:24,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:24,636 INFO L87 Difference]: Start difference. First operand 349 states and 496 transitions. Second operand 3 states. [2020-11-22 13:08:24,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:08:24,933 INFO L93 Difference]: Finished difference Result 717 states and 1021 transitions. [2020-11-22 13:08:24,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 13:08:24,934 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-11-22 13:08:24,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:08:24,937 INFO L225 Difference]: With dead ends: 717 [2020-11-22 13:08:24,937 INFO L226 Difference]: Without dead ends: 370 [2020-11-22 13:08:24,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 13:08:24,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-11-22 13:08:24,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2020-11-22 13:08:24,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-11-22 13:08:24,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 518 transitions. [2020-11-22 13:08:24,958 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 518 transitions. Word has length 59 [2020-11-22 13:08:24,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:08:24,960 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 518 transitions. [2020-11-22 13:08:24,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 13:08:24,960 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 518 transitions. [2020-11-22 13:08:24,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-22 13:08:24,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:08:24,962 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:08:24,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-22 13:08:24,962 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-22 13:08:24,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:08:24,963 INFO L82 PathProgramCache]: Analyzing trace with hash -305123723, now seen corresponding path program 1 times [2020-11-22 13:08:24,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:08:24,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007712189] [2020-11-22 13:08:24,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:08:24,992 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 13:08:24,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [186727679] [2020-11-22 13:08:24,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f24089b3-5bc5-4d12-845c-cdaa1d4a4fd5/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 13:08:25,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:25,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 13:08:25,158 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 13:08:25,311 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 13:08:25,313 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 13:08:25,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-22 13:08:25,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:08:25 BoogieIcfgContainer [2020-11-22 13:08:25,642 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:08:25,642 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:08:25,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:08:25,642 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:08:25,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:08:17" (3/4) ... [2020-11-22 13:08:25,646 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 13:08:25,646 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:08:25,647 INFO L168 Benchmark]: Toolchain (without parser) took 12745.41 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 66.6 MB in the beginning and 38.8 MB in the end (delta: 27.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:25,648 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory is still 83.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:25,648 INFO L168 Benchmark]: CACSL2BoogieTranslator took 449.15 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 74.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:25,649 INFO L168 Benchmark]: Boogie Procedure Inliner took 83.52 ms. Allocated memory is still 102.8 MB. Free memory was 74.1 MB in the beginning and 71.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:25,650 INFO L168 Benchmark]: Boogie Preprocessor took 75.00 ms. Allocated memory is still 102.8 MB. Free memory was 71.0 MB in the beginning and 68.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:25,650 INFO L168 Benchmark]: RCFGBuilder took 3604.47 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 68.9 MB in the beginning and 43.8 MB in the end (delta: 25.1 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:25,651 INFO L168 Benchmark]: TraceAbstraction took 8522.26 ms. Allocated memory is still 123.7 MB. Free memory was 43.8 MB in the beginning and 38.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. [2020-11-22 13:08:25,651 INFO L168 Benchmark]: Witness Printer took 3.67 ms. Allocated memory is still 123.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:08:25,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 102.8 MB. Free memory is still 83.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 449.15 ms. Allocated memory is still 102.8 MB. Free memory was 66.3 MB in the beginning and 74.1 MB in the end (delta: -7.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 83.52 ms. Allocated memory is still 102.8 MB. Free memory was 74.1 MB in the beginning and 71.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.00 ms. Allocated memory is still 102.8 MB. Free memory was 71.0 MB in the beginning and 68.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3604.47 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 68.9 MB in the beginning and 43.8 MB in the end (delta: 25.1 MB). Peak memory consumption was 52.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8522.26 ms. Allocated memory is still 123.7 MB. Free memory was 43.8 MB in the beginning and 38.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 4.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.67 ms. Allocated memory is still 123.7 MB. Free memory is still 38.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 548]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 93. Possible FailurePath: [L692] int s ; [L693] int tmp ; [L697] s = 8464 [L17] int s__info_callback = __VERIFIER_nondet_int(); [L18] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L19] int s__state ; [L20] int s__new_session ; [L21] int s__server ; [L22] int s__version = __VERIFIER_nondet_int(); [L23] int s__type ; [L24] int s__init_num ; [L25] int s__hit = __VERIFIER_nondet_int(); [L26] int s__rwstate ; [L27] int s__init_buf___0 ; [L28] int s__debug = __VERIFIER_nondet_int(); [L29] int s__shutdown ; [L30] int s__cert = __VERIFIER_nondet_int(); [L31] int s__options = __VERIFIER_nondet_int(); [L32] int s__verify_mode = __VERIFIER_nondet_int(); [L33] int s__session__peer = __VERIFIER_nondet_int(); [L34] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int(); [L35] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L36] int s__ctx__stats__sess_accept_renegotiate ; [L37] int s__ctx__stats__sess_accept ; [L38] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__cert_request ; [L40] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L41] int s__s3__tmp__use_rsa_tmp ; [L42] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L43] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L44] int s__s3__tmp__next_state___0 ; [L45] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int(); [L46] int s__session__cipher ; [L47] int buf = __VERIFIER_nondet_int(); [L48] unsigned long l ; [L49] unsigned long Time ; [L50] unsigned long tmp = __VERIFIER_nondet_ulong(); [L51] int cb ; [L52] long num1 ; [L53] int ret ; [L54] int new_state ; [L55] int state ; [L56] int skip ; [L57] int got_new_session ; [L58] int tmp___1 = __VERIFIER_nondet_int(); [L59] int tmp___2 = __VERIFIER_nondet_int(); [L60] int tmp___3 ; [L61] int tmp___4 ; [L62] int tmp___5 ; [L63] int tmp___6 ; [L64] int tmp___7 ; [L65] long tmp___8 = __VERIFIER_nondet_long(); [L66] int tmp___9 ; [L67] int tmp___10 ; [L68] int blastFlag ; [L69] int ag_X ; [L70] int ag_Y = __VERIFIER_nondet_int(); [L71] int ag_Z ; [L72] int __retres70 ; [L3] COND FALSE !(!cond) [L76] s__state = initial_state [L77] blastFlag = 0 [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L92] s__in_handshake = s__in_handshake + 1 [L93] COND TRUE tmp___1 & 12288 [L94] COND TRUE tmp___2 & 16384 [L102] COND FALSE !(s__cert == 0) [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND TRUE s__state == 8464 [L294] s__shutdown = 0 [L295] ret = __VERIFIER_nondet_int() [L296] COND TRUE blastFlag == 0 [L297] blastFlag = 1 [L301] COND FALSE !(ret <= 0) [L306] got_new_session = 1 [L307] s__state = 8496 [L308] s__init_num = 0 [L641] COND FALSE !(! s__s3__tmp__reuse_message) [L670] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND TRUE s__state == 8496 [L312] ret = __VERIFIER_nondet_int() [L313] COND TRUE blastFlag == 1 [L314] blastFlag = 2 [L318] COND FALSE !(ret <= 0) [L323] COND TRUE \read(s__hit) [L324] s__state = 8656 [L328] s__init_num = 0 [L641] COND FALSE !(! s__s3__tmp__reuse_message) [L670] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND FALSE !(s__state == 8528) [L160] COND FALSE !(s__state == 8529) [L163] COND FALSE !(s__state == 8544) [L166] COND FALSE !(s__state == 8545) [L169] COND FALSE !(s__state == 8560) [L172] COND FALSE !(s__state == 8561) [L175] COND FALSE !(s__state == 8448) [L178] COND FALSE !(s__state == 8576) [L181] COND FALSE !(s__state == 8577) [L184] COND FALSE !(s__state == 8592) [L187] COND FALSE !(s__state == 8593) [L190] COND FALSE !(s__state == 8608) [L193] COND FALSE !(s__state == 8609) [L196] COND FALSE !(s__state == 8640) [L199] COND FALSE !(s__state == 8641) [L202] COND TRUE s__state == 8656 [L529] s__session__cipher = s__s3__tmp__new_cipher [L530] tmp___9 = __VERIFIER_nondet_int() [L531] COND FALSE !(! tmp___9) [L537] ret = __VERIFIER_nondet_int() [L538] COND TRUE blastFlag == 2 [L539] blastFlag = 3 [L543] COND FALSE !(ret <= 0) [L548] ag_X * ag_Y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 8.3s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1332 SDtfs, 1395 SDslu, 335 SDs, 0 SdLazy, 1055 SolverSat, 381 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 78 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 28572 SizeOfPredicates, 4 NumberOfNonLiveVariables, 144 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 39/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...