./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/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 09f813c788ce76f2fed6ff9e53c54c81ca842bfc ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/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 0.2.0-7b2dab5 [2020-12-09 17:30:30,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 17:30:30,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 17:30:30,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 17:30:30,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 17:30:30,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 17:30:30,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 17:30:30,990 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 17:30:30,991 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 17:30:30,992 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 17:30:30,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 17:30:30,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 17:30:30,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 17:30:30,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 17:30:30,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 17:30:30,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 17:30:30,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 17:30:30,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 17:30:31,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 17:30:31,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 17:30:31,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 17:30:31,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 17:30:31,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 17:30:31,006 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 17:30:31,008 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 17:30:31,008 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 17:30:31,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 17:30:31,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 17:30:31,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 17:30:31,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 17:30:31,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 17:30:31,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 17:30:31,012 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 17:30:31,013 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 17:30:31,014 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 17:30:31,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 17:30:31,014 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 17:30:31,015 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 17:30:31,015 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 17:30:31,015 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 17:30:31,016 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 17:30:31,017 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-12-09 17:30:31,032 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 17:30:31,032 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 17:30:31,033 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 17:30:31,033 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 17:30:31,033 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 17:30:31,033 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 17:30:31,034 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 17:30:31,034 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 17:30:31,034 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 17:30:31,034 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 17:30:31,034 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 17:30:31,034 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 17:30:31,034 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 17:30:31,034 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 17:30:31,035 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 17:30:31,035 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 17:30:31,035 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 17:30:31,035 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 17:30:31,035 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 17:30:31,036 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 17:30:31,037 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 17:30:31,037 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 17:30:31,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 17:30:31,037 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 17:30:31,037 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 17:30:31,037 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 17:30:31,037 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 17:30:31,037 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 17:30:31,038 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 17:30:31,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 17:30:31,038 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 17:30:31,038 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 17:30:31,038 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 17:30:31,038 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_bf213f7a-75b6-4710-9e3a-f88fb124874e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2020-12-09 17:30:31,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 17:30:31,239 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 17:30:31,242 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 17:30:31,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 17:30:31,243 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 17:30:31,244 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-12-09 17:30:31,291 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/data/a56f9e45e/e128aeed1c4342e08834f95a58ca9288/FLAGe6df9b2df [2020-12-09 17:30:31,656 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 17:30:31,657 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-12-09 17:30:31,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/data/a56f9e45e/e128aeed1c4342e08834f95a58ca9288/FLAGe6df9b2df [2020-12-09 17:30:31,672 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/data/a56f9e45e/e128aeed1c4342e08834f95a58ca9288 [2020-12-09 17:30:31,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 17:30:31,675 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 17:30:31,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 17:30:31,677 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 17:30:31,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 17:30:31,680 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@eb1b0fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31, skipping insertion in model container [2020-12-09 17:30:31,682 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 17:30:31,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 17:30:31,817 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[423,436] [2020-12-09 17:30:31,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:30:31,854 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 17:30:31,862 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[423,436] [2020-12-09 17:30:31,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 17:30:31,892 INFO L208 MainTranslator]: Completed translation [2020-12-09 17:30:31,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31 WrapperNode [2020-12-09 17:30:31,893 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 17:30:31,894 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 17:30:31,894 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 17:30:31,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 17:30:31,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,906 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 17:30:31,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 17:30:31,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 17:30:31,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 17:30:31,935 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,938 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,938 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... [2020-12-09 17:30:31,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 17:30:31,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 17:30:31,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 17:30:31,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 17:30:31,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/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 [2020-12-09 17:30:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 17:30:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 17:30:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 17:30:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 17:30:32,549 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 17:30:32,549 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2020-12-09 17:30:32,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:30:32 BoogieIcfgContainer [2020-12-09 17:30:32,551 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 17:30:32,553 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 17:30:32,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 17:30:32,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 17:30:32,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 05:30:31" (1/3) ... [2020-12-09 17:30:32,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e769bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:30:32, skipping insertion in model container [2020-12-09 17:30:32,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 05:30:31" (2/3) ... [2020-12-09 17:30:32,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e769bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 05:30:32, skipping insertion in model container [2020-12-09 17:30:32,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:30:32" (3/3) ... [2020-12-09 17:30:32,557 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-12-09 17:30:32,567 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 17:30:32,569 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 36 error locations. [2020-12-09 17:30:32,577 INFO L253 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2020-12-09 17:30:32,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 17:30:32,594 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 17:30:32,594 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 17:30:32,594 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 17:30:32,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 17:30:32,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 17:30:32,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 17:30:32,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 17:30:32,609 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states. [2020-12-09 17:30:32,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 17:30:32,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:32,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 17:30:32,614 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:32,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:32,619 INFO L82 PathProgramCache]: Analyzing trace with hash -79604470, now seen corresponding path program 1 times [2020-12-09 17:30:32,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:32,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390422541] [2020-12-09 17:30:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:32,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:32,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390422541] [2020-12-09 17:30:32,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:32,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:32,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580351438] [2020-12-09 17:30:32,747 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 17:30:32,747 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:32,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 17:30:32,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 17:30:32,761 INFO L87 Difference]: Start difference. First operand 122 states. Second operand 2 states. [2020-12-09 17:30:32,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:32,787 INFO L93 Difference]: Finished difference Result 225 states and 293 transitions. [2020-12-09 17:30:32,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 17:30:32,788 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-09 17:30:32,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:32,797 INFO L225 Difference]: With dead ends: 225 [2020-12-09 17:30:32,797 INFO L226 Difference]: Without dead ends: 118 [2020-12-09 17:30:32,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 17:30:32,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-12-09 17:30:32,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-12-09 17:30:32,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-12-09 17:30:32,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 142 transitions. [2020-12-09 17:30:32,836 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 142 transitions. Word has length 6 [2020-12-09 17:30:32,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:32,837 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 142 transitions. [2020-12-09 17:30:32,837 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 17:30:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 142 transitions. [2020-12-09 17:30:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 17:30:32,838 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:32,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 17:30:32,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 17:30:32,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:32,839 INFO L82 PathProgramCache]: Analyzing trace with hash -80889774, now seen corresponding path program 1 times [2020-12-09 17:30:32,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:32,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214027802] [2020-12-09 17:30:32,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:32,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:32,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:32,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214027802] [2020-12-09 17:30:32,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:32,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 17:30:32,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49778349] [2020-12-09 17:30:32,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:32,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:32,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:32,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:32,891 INFO L87 Difference]: Start difference. First operand 118 states and 142 transitions. Second operand 3 states. [2020-12-09 17:30:33,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:33,007 INFO L93 Difference]: Finished difference Result 246 states and 300 transitions. [2020-12-09 17:30:33,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:33,008 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-12-09 17:30:33,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:33,009 INFO L225 Difference]: With dead ends: 246 [2020-12-09 17:30:33,010 INFO L226 Difference]: Without dead ends: 144 [2020-12-09 17:30:33,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:33,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-09 17:30:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-12-09 17:30:33,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-09 17:30:33,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 168 transitions. [2020-12-09 17:30:33,024 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 168 transitions. Word has length 6 [2020-12-09 17:30:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:33,024 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 168 transitions. [2020-12-09 17:30:33,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:33,025 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 168 transitions. [2020-12-09 17:30:33,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 17:30:33,026 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:33,026 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:33,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 17:30:33,026 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:33,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:33,027 INFO L82 PathProgramCache]: Analyzing trace with hash 235741010, now seen corresponding path program 1 times [2020-12-09 17:30:33,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:33,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686954006] [2020-12-09 17:30:33,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:33,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:33,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686954006] [2020-12-09 17:30:33,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:33,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:33,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347759215] [2020-12-09 17:30:33,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:33,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:33,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:33,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:33,074 INFO L87 Difference]: Start difference. First operand 142 states and 168 transitions. Second operand 4 states. [2020-12-09 17:30:33,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:33,178 INFO L93 Difference]: Finished difference Result 190 states and 221 transitions. [2020-12-09 17:30:33,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:33,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-12-09 17:30:33,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:33,181 INFO L225 Difference]: With dead ends: 190 [2020-12-09 17:30:33,181 INFO L226 Difference]: Without dead ends: 180 [2020-12-09 17:30:33,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:33,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-12-09 17:30:33,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 143. [2020-12-09 17:30:33,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-12-09 17:30:33,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2020-12-09 17:30:33,191 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 10 [2020-12-09 17:30:33,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:33,192 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2020-12-09 17:30:33,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:33,192 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2020-12-09 17:30:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 17:30:33,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:33,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:33,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 17:30:33,193 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:33,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1281963073, now seen corresponding path program 1 times [2020-12-09 17:30:33,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:33,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290112961] [2020-12-09 17:30:33,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:33,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:33,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:33,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290112961] [2020-12-09 17:30:33,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:33,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:33,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060755315] [2020-12-09 17:30:33,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:33,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:33,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:33,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:33,230 INFO L87 Difference]: Start difference. First operand 143 states and 170 transitions. Second operand 3 states. [2020-12-09 17:30:33,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:33,288 INFO L93 Difference]: Finished difference Result 180 states and 207 transitions. [2020-12-09 17:30:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:33,289 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-12-09 17:30:33,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:33,290 INFO L225 Difference]: With dead ends: 180 [2020-12-09 17:30:33,290 INFO L226 Difference]: Without dead ends: 172 [2020-12-09 17:30:33,290 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 [2020-12-09 17:30:33,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-12-09 17:30:33,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 129. [2020-12-09 17:30:33,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2020-12-09 17:30:33,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 156 transitions. [2020-12-09 17:30:33,298 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 156 transitions. Word has length 11 [2020-12-09 17:30:33,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:33,298 INFO L481 AbstractCegarLoop]: Abstraction has 129 states and 156 transitions. [2020-12-09 17:30:33,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:33,298 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 156 transitions. [2020-12-09 17:30:33,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 17:30:33,299 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:33,299 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:33,299 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 17:30:33,299 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:33,299 INFO L82 PathProgramCache]: Analyzing trace with hash -2081378898, now seen corresponding path program 1 times [2020-12-09 17:30:33,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:33,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704968990] [2020-12-09 17:30:33,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:33,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:33,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:33,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704968990] [2020-12-09 17:30:33,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:33,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:33,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152817902] [2020-12-09 17:30:33,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:33,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:33,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:33,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:33,325 INFO L87 Difference]: Start difference. First operand 129 states and 156 transitions. Second operand 4 states. [2020-12-09 17:30:33,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:33,414 INFO L93 Difference]: Finished difference Result 292 states and 344 transitions. [2020-12-09 17:30:33,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:33,414 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-09 17:30:33,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:33,415 INFO L225 Difference]: With dead ends: 292 [2020-12-09 17:30:33,415 INFO L226 Difference]: Without dead ends: 190 [2020-12-09 17:30:33,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:33,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-09 17:30:33,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 139. [2020-12-09 17:30:33,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-12-09 17:30:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 168 transitions. [2020-12-09 17:30:33,423 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 168 transitions. Word has length 11 [2020-12-09 17:30:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:33,423 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 168 transitions. [2020-12-09 17:30:33,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 168 transitions. [2020-12-09 17:30:33,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 17:30:33,424 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:33,424 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:33,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 17:30:33,425 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:33,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:33,425 INFO L82 PathProgramCache]: Analyzing trace with hash 323293782, now seen corresponding path program 1 times [2020-12-09 17:30:33,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:33,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953782943] [2020-12-09 17:30:33,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:33,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:33,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953782943] [2020-12-09 17:30:33,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:33,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:30:33,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969744881] [2020-12-09 17:30:33,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 17:30:33,458 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:33,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 17:30:33,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 17:30:33,459 INFO L87 Difference]: Start difference. First operand 139 states and 168 transitions. Second operand 3 states. [2020-12-09 17:30:33,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:33,508 INFO L93 Difference]: Finished difference Result 215 states and 257 transitions. [2020-12-09 17:30:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 17:30:33,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-12-09 17:30:33,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:33,509 INFO L225 Difference]: With dead ends: 215 [2020-12-09 17:30:33,509 INFO L226 Difference]: Without dead ends: 128 [2020-12-09 17:30:33,510 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 [2020-12-09 17:30:33,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-12-09 17:30:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-12-09 17:30:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-09 17:30:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 152 transitions. [2020-12-09 17:30:33,517 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 152 transitions. Word has length 12 [2020-12-09 17:30:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:33,517 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 152 transitions. [2020-12-09 17:30:33,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 17:30:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 152 transitions. [2020-12-09 17:30:33,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 17:30:33,518 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:33,518 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:33,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 17:30:33,519 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:33,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:33,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1716888318, now seen corresponding path program 1 times [2020-12-09 17:30:33,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:33,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340706199] [2020-12-09 17:30:33,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:33,548 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:33,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340706199] [2020-12-09 17:30:33,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099468569] [2020-12-09 17:30:33,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/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 [2020-12-09 17:30:33,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:33,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 17:30:33,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:33,624 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:33,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:33,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:33,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:30:33,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [2] total 7 [2020-12-09 17:30:33,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941082444] [2020-12-09 17:30:33,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 17:30:33,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:33,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 17:30:33,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-09 17:30:33,654 INFO L87 Difference]: Start difference. First operand 128 states and 152 transitions. Second operand 6 states. [2020-12-09 17:30:33,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:33,752 INFO L93 Difference]: Finished difference Result 232 states and 261 transitions. [2020-12-09 17:30:33,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 17:30:33,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 17:30:33,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:33,754 INFO L225 Difference]: With dead ends: 232 [2020-12-09 17:30:33,754 INFO L226 Difference]: Without dead ends: 229 [2020-12-09 17:30:33,755 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-12-09 17:30:33,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-12-09 17:30:33,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 124. [2020-12-09 17:30:33,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-09 17:30:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 148 transitions. [2020-12-09 17:30:33,763 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 148 transitions. Word has length 12 [2020-12-09 17:30:33,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:33,763 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 148 transitions. [2020-12-09 17:30:33,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 17:30:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 148 transitions. [2020-12-09 17:30:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 17:30:33,764 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:33,764 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:33,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-09 17:30:33,966 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:33,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:33,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1839497726, now seen corresponding path program 1 times [2020-12-09 17:30:33,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:33,968 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172933747] [2020-12-09 17:30:33,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:34,068 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-09 17:30:34,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172933747] [2020-12-09 17:30:34,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:34,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 17:30:34,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723384416] [2020-12-09 17:30:34,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:34,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:34,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:34,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:34,071 INFO L87 Difference]: Start difference. First operand 124 states and 148 transitions. Second operand 4 states. [2020-12-09 17:30:34,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:34,155 INFO L93 Difference]: Finished difference Result 202 states and 229 transitions. [2020-12-09 17:30:34,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:34,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-12-09 17:30:34,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:34,156 INFO L225 Difference]: With dead ends: 202 [2020-12-09 17:30:34,157 INFO L226 Difference]: Without dead ends: 198 [2020-12-09 17:30:34,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:34,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2020-12-09 17:30:34,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 122. [2020-12-09 17:30:34,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-09 17:30:34,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 147 transitions. [2020-12-09 17:30:34,163 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 147 transitions. Word has length 16 [2020-12-09 17:30:34,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:34,163 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 147 transitions. [2020-12-09 17:30:34,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:34,164 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 147 transitions. [2020-12-09 17:30:34,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 17:30:34,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:34,165 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] [2020-12-09 17:30:34,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 17:30:34,165 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:34,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:34,166 INFO L82 PathProgramCache]: Analyzing trace with hash -503355370, now seen corresponding path program 1 times [2020-12-09 17:30:34,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:34,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093394943] [2020-12-09 17:30:34,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:34,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093394943] [2020-12-09 17:30:34,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:34,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 17:30:34,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152617868] [2020-12-09 17:30:34,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:34,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:34,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:34,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:34,221 INFO L87 Difference]: Start difference. First operand 122 states and 147 transitions. Second operand 4 states. [2020-12-09 17:30:34,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:34,292 INFO L93 Difference]: Finished difference Result 224 states and 266 transitions. [2020-12-09 17:30:34,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:34,292 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-12-09 17:30:34,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:34,293 INFO L225 Difference]: With dead ends: 224 [2020-12-09 17:30:34,294 INFO L226 Difference]: Without dead ends: 117 [2020-12-09 17:30:34,294 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-09 17:30:34,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 114. [2020-12-09 17:30:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-12-09 17:30:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2020-12-09 17:30:34,299 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 21 [2020-12-09 17:30:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:34,299 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2020-12-09 17:30:34,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2020-12-09 17:30:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 17:30:34,300 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:34,300 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:34,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 17:30:34,301 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:34,301 INFO L82 PathProgramCache]: Analyzing trace with hash -632026387, now seen corresponding path program 1 times [2020-12-09 17:30:34,302 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:34,302 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74685733] [2020-12-09 17:30:34,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:34,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74685733] [2020-12-09 17:30:34,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [902035762] [2020-12-09 17:30:34,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/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 [2020-12-09 17:30:34,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:34,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:30:34,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:34,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:34,461 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:34,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [965919719] [2020-12-09 17:30:34,480 INFO L159 IcfgInterpreter]: Started Sifa with 19 locations of interest [2020-12-09 17:30:34,480 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:34,485 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:34,490 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:34,490 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:34,852 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:34,988 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:30:35,132 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:35,250 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:30:35,954 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 71 [2020-12-09 17:30:35,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:35,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [5, 5, 5] total 21 [2020-12-09 17:30:35,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212866145] [2020-12-09 17:30:35,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-09 17:30:35,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:35,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-09 17:30:35,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=328, Unknown=0, NotChecked=0, Total=420 [2020-12-09 17:30:35,957 INFO L87 Difference]: Start difference. First operand 114 states and 134 transitions. Second operand 14 states. [2020-12-09 17:30:36,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:36,551 INFO L93 Difference]: Finished difference Result 269 states and 318 transitions. [2020-12-09 17:30:36,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-09 17:30:36,552 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-12-09 17:30:36,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:36,553 INFO L225 Difference]: With dead ends: 269 [2020-12-09 17:30:36,553 INFO L226 Difference]: Without dead ends: 155 [2020-12-09 17:30:36,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 56 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2020-12-09 17:30:36,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-09 17:30:36,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 117. [2020-12-09 17:30:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-12-09 17:30:36,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2020-12-09 17:30:36,564 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 25 [2020-12-09 17:30:36,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:36,564 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2020-12-09 17:30:36,564 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-09 17:30:36,564 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2020-12-09 17:30:36,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 17:30:36,565 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:36,565 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:36,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-09 17:30:36,766 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:36,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:36,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1153953961, now seen corresponding path program 1 times [2020-12-09 17:30:36,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:36,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966968511] [2020-12-09 17:30:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:36,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:36,799 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-12-09 17:30:36,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966968511] [2020-12-09 17:30:36,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:36,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:36,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232737535] [2020-12-09 17:30:36,803 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:36,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:36,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:36,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:36,803 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand 4 states. [2020-12-09 17:30:36,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:36,856 INFO L93 Difference]: Finished difference Result 150 states and 175 transitions. [2020-12-09 17:30:36,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:36,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-09 17:30:36,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:36,857 INFO L225 Difference]: With dead ends: 150 [2020-12-09 17:30:36,858 INFO L226 Difference]: Without dead ends: 148 [2020-12-09 17:30:36,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:36,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-12-09 17:30:36,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 106. [2020-12-09 17:30:36,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-12-09 17:30:36,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 127 transitions. [2020-12-09 17:30:36,866 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 127 transitions. Word has length 25 [2020-12-09 17:30:36,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:36,867 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 127 transitions. [2020-12-09 17:30:36,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:36,867 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 127 transitions. [2020-12-09 17:30:36,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 17:30:36,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:36,867 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:36,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-09 17:30:36,868 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:36,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:36,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1773263214, now seen corresponding path program 1 times [2020-12-09 17:30:36,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:36,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894682908] [2020-12-09 17:30:36,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:36,901 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:36,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894682908] [2020-12-09 17:30:36,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [688240230] [2020-12-09 17:30:36,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:36,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:30:36,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:36,966 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:36,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:37,007 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:37,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [603395886] [2020-12-09 17:30:37,009 INFO L159 IcfgInterpreter]: Started Sifa with 20 locations of interest [2020-12-09 17:30:37,009 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:37,009 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:37,009 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:37,009 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:37,203 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:37,419 WARN L197 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:38,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:38,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [5, 5, 5] total 23 [2020-12-09 17:30:38,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386753301] [2020-12-09 17:30:38,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-09 17:30:38,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:38,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-09 17:30:38,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-12-09 17:30:38,286 INFO L87 Difference]: Start difference. First operand 106 states and 127 transitions. Second operand 16 states. [2020-12-09 17:30:38,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:38,837 INFO L93 Difference]: Finished difference Result 214 states and 239 transitions. [2020-12-09 17:30:38,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-09 17:30:38,837 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 26 [2020-12-09 17:30:38,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:38,838 INFO L225 Difference]: With dead ends: 214 [2020-12-09 17:30:38,838 INFO L226 Difference]: Without dead ends: 212 [2020-12-09 17:30:38,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 4 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=111, Invalid=489, Unknown=0, NotChecked=0, Total=600 [2020-12-09 17:30:38,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-12-09 17:30:38,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 108. [2020-12-09 17:30:38,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-09 17:30:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 129 transitions. [2020-12-09 17:30:38,844 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 129 transitions. Word has length 26 [2020-12-09 17:30:38,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:38,845 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 129 transitions. [2020-12-09 17:30:38,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-09 17:30:38,845 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 129 transitions. [2020-12-09 17:30:38,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 17:30:38,845 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:38,845 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:39,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-09 17:30:39,046 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:39,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:39,046 INFO L82 PathProgramCache]: Analyzing trace with hash -560925357, now seen corresponding path program 1 times [2020-12-09 17:30:39,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:39,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689020351] [2020-12-09 17:30:39,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:39,087 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:39,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689020351] [2020-12-09 17:30:39,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158873693] [2020-12-09 17:30:39,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:39,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-09 17:30:39,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 17:30:39,175 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:39,304 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 17:30:39,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2020-12-09 17:30:39,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 4] imperfect sequences [5] total 12 [2020-12-09 17:30:39,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444265631] [2020-12-09 17:30:39,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 17:30:39,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:39,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 17:30:39,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-12-09 17:30:39,305 INFO L87 Difference]: Start difference. First operand 108 states and 129 transitions. Second operand 9 states. [2020-12-09 17:30:39,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:39,444 INFO L93 Difference]: Finished difference Result 169 states and 198 transitions. [2020-12-09 17:30:39,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 17:30:39,444 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-12-09 17:30:39,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:39,445 INFO L225 Difference]: With dead ends: 169 [2020-12-09 17:30:39,445 INFO L226 Difference]: Without dead ends: 132 [2020-12-09 17:30:39,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2020-12-09 17:30:39,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-09 17:30:39,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2020-12-09 17:30:39,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-12-09 17:30:39,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 151 transitions. [2020-12-09 17:30:39,452 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 151 transitions. Word has length 26 [2020-12-09 17:30:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:39,452 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 151 transitions. [2020-12-09 17:30:39,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 17:30:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 151 transitions. [2020-12-09 17:30:39,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 17:30:39,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:39,453 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:39,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:39,654 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:39,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:39,654 INFO L82 PathProgramCache]: Analyzing trace with hash -565357134, now seen corresponding path program 1 times [2020-12-09 17:30:39,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:39,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385846235] [2020-12-09 17:30:39,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:39,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 17:30:39,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385846235] [2020-12-09 17:30:39,674 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:39,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:39,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455270730] [2020-12-09 17:30:39,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:39,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:39,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:39,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:39,675 INFO L87 Difference]: Start difference. First operand 128 states and 151 transitions. Second operand 4 states. [2020-12-09 17:30:39,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:39,719 INFO L93 Difference]: Finished difference Result 163 states and 188 transitions. [2020-12-09 17:30:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:39,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-09 17:30:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:39,720 INFO L225 Difference]: With dead ends: 163 [2020-12-09 17:30:39,720 INFO L226 Difference]: Without dead ends: 151 [2020-12-09 17:30:39,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:39,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-09 17:30:39,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 108. [2020-12-09 17:30:39,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-09 17:30:39,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 123 transitions. [2020-12-09 17:30:39,726 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 123 transitions. Word has length 26 [2020-12-09 17:30:39,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:39,726 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 123 transitions. [2020-12-09 17:30:39,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:39,727 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 123 transitions. [2020-12-09 17:30:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 17:30:39,727 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:39,727 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 17:30:39,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-09 17:30:39,727 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:39,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:39,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1254869318, now seen corresponding path program 1 times [2020-12-09 17:30:39,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:39,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127636398] [2020-12-09 17:30:39,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:39,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:39,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-12-09 17:30:39,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127636398] [2020-12-09 17:30:39,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 17:30:39,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 17:30:39,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030167065] [2020-12-09 17:30:39,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 17:30:39,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:39,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 17:30:39,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 17:30:39,749 INFO L87 Difference]: Start difference. First operand 108 states and 123 transitions. Second operand 4 states. [2020-12-09 17:30:39,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:39,793 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-09 17:30:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 17:30:39,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2020-12-09 17:30:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:39,794 INFO L225 Difference]: With dead ends: 141 [2020-12-09 17:30:39,794 INFO L226 Difference]: Without dead ends: 120 [2020-12-09 17:30:39,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 17:30:39,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-09 17:30:39,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 82. [2020-12-09 17:30:39,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-09 17:30:39,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-12-09 17:30:39,799 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 28 [2020-12-09 17:30:39,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:39,799 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-12-09 17:30:39,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 17:30:39,799 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-12-09 17:30:39,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 17:30:39,799 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:39,799 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-09 17:30:39,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-12-09 17:30:39,799 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:39,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:39,800 INFO L82 PathProgramCache]: Analyzing trace with hash 1433983311, now seen corresponding path program 1 times [2020-12-09 17:30:39,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:39,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772247069] [2020-12-09 17:30:39,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:39,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:39,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772247069] [2020-12-09 17:30:39,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [444400312] [2020-12-09 17:30:39,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:39,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:39,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:30:39,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:39,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:39,893 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:39,929 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:39,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2054653760] [2020-12-09 17:30:39,931 INFO L159 IcfgInterpreter]: Started Sifa with 27 locations of interest [2020-12-09 17:30:39,931 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:39,931 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:39,931 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:39,932 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:40,099 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:40,210 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:30:40,324 WARN L197 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:40,445 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:30:41,825 WARN L197 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2020-12-09 17:30:41,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:41,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [5, 5, 5] total 27 [2020-12-09 17:30:41,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525283145] [2020-12-09 17:30:41,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-09 17:30:41,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:41,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-09 17:30:41,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=559, Unknown=0, NotChecked=0, Total=702 [2020-12-09 17:30:41,940 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 20 states. [2020-12-09 17:30:42,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:42,445 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2020-12-09 17:30:42,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-09 17:30:42,445 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 33 [2020-12-09 17:30:42,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:42,446 INFO L225 Difference]: With dead ends: 138 [2020-12-09 17:30:42,446 INFO L226 Difference]: Without dead ends: 136 [2020-12-09 17:30:42,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=154, Invalid=658, Unknown=0, NotChecked=0, Total=812 [2020-12-09 17:30:42,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-09 17:30:42,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 100. [2020-12-09 17:30:42,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-09 17:30:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 116 transitions. [2020-12-09 17:30:42,452 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 116 transitions. Word has length 33 [2020-12-09 17:30:42,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:42,452 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 116 transitions. [2020-12-09 17:30:42,452 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-09 17:30:42,452 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 116 transitions. [2020-12-09 17:30:42,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 17:30:42,453 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:42,453 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 17:30:42,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-09 17:30:42,653 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:42,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:42,654 INFO L82 PathProgramCache]: Analyzing trace with hash -26214987, now seen corresponding path program 1 times [2020-12-09 17:30:42,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:42,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264900335] [2020-12-09 17:30:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:42,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:42,712 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:42,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264900335] [2020-12-09 17:30:42,712 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630267891] [2020-12-09 17:30:42,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:42,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:30:42,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:42,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:42,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:42,847 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:42,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1517247368] [2020-12-09 17:30:42,849 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-12-09 17:30:42,849 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:42,850 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:42,850 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:42,850 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:43,028 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:43,162 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:30:43,301 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:43,421 WARN L197 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:30:44,900 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-12-09 17:30:45,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:45,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 17:30:45,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771947253] [2020-12-09 17:30:45,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 17:30:45,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:45,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 17:30:45,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-12-09 17:30:45,039 INFO L87 Difference]: Start difference. First operand 100 states and 116 transitions. Second operand 22 states. [2020-12-09 17:30:45,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:45,482 INFO L93 Difference]: Finished difference Result 153 states and 174 transitions. [2020-12-09 17:30:45,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-12-09 17:30:45,483 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 34 [2020-12-09 17:30:45,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:45,483 INFO L225 Difference]: With dead ends: 153 [2020-12-09 17:30:45,483 INFO L226 Difference]: Without dead ends: 151 [2020-12-09 17:30:45,484 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 70 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-12-09 17:30:45,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-09 17:30:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 97. [2020-12-09 17:30:45,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-12-09 17:30:45,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 112 transitions. [2020-12-09 17:30:45,489 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 112 transitions. Word has length 34 [2020-12-09 17:30:45,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:45,489 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 112 transitions. [2020-12-09 17:30:45,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 17:30:45,489 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 112 transitions. [2020-12-09 17:30:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 17:30:45,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:45,490 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-09 17:30:45,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:45,691 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:45,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:45,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1087680743, now seen corresponding path program 1 times [2020-12-09 17:30:45,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:45,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457504631] [2020-12-09 17:30:45,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:45,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457504631] [2020-12-09 17:30:45,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767334437] [2020-12-09 17:30:45,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:45,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:30:45,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:45,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:45,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:45,870 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:45,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [557501870] [2020-12-09 17:30:45,872 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2020-12-09 17:30:45,873 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:45,873 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:45,873 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:45,873 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:46,059 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:46,179 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:30:46,303 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:46,435 WARN L197 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:30:47,933 WARN L197 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2020-12-09 17:30:48,126 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 17:30:48,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:48,195 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 17:30:48,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26799107] [2020-12-09 17:30:48,196 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 17:30:48,196 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:48,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 17:30:48,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=679, Unknown=0, NotChecked=0, Total=812 [2020-12-09 17:30:48,196 INFO L87 Difference]: Start difference. First operand 97 states and 112 transitions. Second operand 22 states. [2020-12-09 17:30:48,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:48,777 INFO L93 Difference]: Finished difference Result 183 states and 204 transitions. [2020-12-09 17:30:48,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 17:30:48,778 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-12-09 17:30:48,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:48,779 INFO L225 Difference]: With dead ends: 183 [2020-12-09 17:30:48,779 INFO L226 Difference]: Without dead ends: 182 [2020-12-09 17:30:48,779 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 484 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=144, Invalid=786, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:30:48,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-09 17:30:48,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 115. [2020-12-09 17:30:48,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-09 17:30:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 135 transitions. [2020-12-09 17:30:48,786 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 135 transitions. Word has length 35 [2020-12-09 17:30:48,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:48,786 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 135 transitions. [2020-12-09 17:30:48,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 17:30:48,786 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 135 transitions. [2020-12-09 17:30:48,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 17:30:48,787 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:48,787 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-09 17:30:48,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:48,988 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:48,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:48,989 INFO L82 PathProgramCache]: Analyzing trace with hash -304217287, now seen corresponding path program 1 times [2020-12-09 17:30:48,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:48,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258657028] [2020-12-09 17:30:48,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:49,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:49,041 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:49,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258657028] [2020-12-09 17:30:49,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835230604] [2020-12-09 17:30:49,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:49,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:49,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:30:49,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:49,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:49,100 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:49,135 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:49,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [975228854] [2020-12-09 17:30:49,137 INFO L159 IcfgInterpreter]: Started Sifa with 29 locations of interest [2020-12-09 17:30:49,137 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:49,137 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:49,137 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:49,137 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:49,304 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:49,426 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:30:49,550 WARN L197 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:49,676 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:30:51,276 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2020-12-09 17:30:51,539 WARN L197 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2020-12-09 17:30:51,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:51,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 17:30:51,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747855158] [2020-12-09 17:30:51,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 17:30:51,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:51,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 17:30:51,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=661, Unknown=0, NotChecked=0, Total=812 [2020-12-09 17:30:51,618 INFO L87 Difference]: Start difference. First operand 115 states and 135 transitions. Second operand 22 states. [2020-12-09 17:30:52,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:52,318 INFO L93 Difference]: Finished difference Result 167 states and 190 transitions. [2020-12-09 17:30:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 17:30:52,319 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 35 [2020-12-09 17:30:52,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:52,320 INFO L225 Difference]: With dead ends: 167 [2020-12-09 17:30:52,320 INFO L226 Difference]: Without dead ends: 166 [2020-12-09 17:30:52,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 475 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:30:52,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-09 17:30:52,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 124. [2020-12-09 17:30:52,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-09 17:30:52,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 147 transitions. [2020-12-09 17:30:52,327 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 147 transitions. Word has length 35 [2020-12-09 17:30:52,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:52,327 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 147 transitions. [2020-12-09 17:30:52,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 17:30:52,328 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 147 transitions. [2020-12-09 17:30:52,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 17:30:52,328 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:52,328 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-09 17:30:52,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable78 [2020-12-09 17:30:52,530 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:52,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:52,531 INFO L82 PathProgramCache]: Analyzing trace with hash 2052452510, now seen corresponding path program 1 times [2020-12-09 17:30:52,531 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:52,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197548843] [2020-12-09 17:30:52,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:52,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:52,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197548843] [2020-12-09 17:30:52,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842128872] [2020-12-09 17:30:52,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:52,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:52,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:30:52,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:52,649 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:52,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:52,686 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:52,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1078871753] [2020-12-09 17:30:52,687 INFO L159 IcfgInterpreter]: Started Sifa with 30 locations of interest [2020-12-09 17:30:52,687 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:52,688 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:52,688 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:52,688 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:52,852 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:52,969 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:30:53,098 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:53,217 WARN L197 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:30:54,687 WARN L197 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2020-12-09 17:30:55,066 WARN L197 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 83 [2020-12-09 17:30:55,470 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 91 [2020-12-09 17:30:55,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:55,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [5, 5, 5] total 29 [2020-12-09 17:30:55,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931973893] [2020-12-09 17:30:55,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-09 17:30:55,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:55,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-09 17:30:55,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=640, Unknown=0, NotChecked=0, Total=812 [2020-12-09 17:30:55,472 INFO L87 Difference]: Start difference. First operand 124 states and 147 transitions. Second operand 22 states. [2020-12-09 17:30:56,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:56,059 INFO L93 Difference]: Finished difference Result 165 states and 189 transitions. [2020-12-09 17:30:56,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 17:30:56,060 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 36 [2020-12-09 17:30:56,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:56,061 INFO L225 Difference]: With dead ends: 165 [2020-12-09 17:30:56,061 INFO L226 Difference]: Without dead ends: 163 [2020-12-09 17:30:56,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 77 SyntacticMatches, 7 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 492 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=183, Invalid=747, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:30:56,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-12-09 17:30:56,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 133. [2020-12-09 17:30:56,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-09 17:30:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-12-09 17:30:56,069 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 36 [2020-12-09 17:30:56,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:56,069 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-12-09 17:30:56,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-12-09 17:30:56,069 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-12-09 17:30:56,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 17:30:56,070 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:56,070 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 17:30:56,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:56,271 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:56,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:56,272 INFO L82 PathProgramCache]: Analyzing trace with hash 116060671, now seen corresponding path program 1 times [2020-12-09 17:30:56,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:56,273 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183564280] [2020-12-09 17:30:56,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:56,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:56,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183564280] [2020-12-09 17:30:56,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2087625868] [2020-12-09 17:30:56,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:56,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:30:56,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:56,400 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:56,400 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:30:56,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:56,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1532661125] [2020-12-09 17:30:56,451 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2020-12-09 17:30:56,451 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:30:56,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:30:56,452 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:30:56,452 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:30:56,645 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:30:56,775 WARN L197 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:30:56,899 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:30:57,030 WARN L197 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:30:58,811 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2020-12-09 17:30:58,995 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 17:30:59,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:30:59,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [5, 5, 5] total 31 [2020-12-09 17:30:59,074 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120104473] [2020-12-09 17:30:59,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 17:30:59,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:30:59,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 17:30:59,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=808, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:30:59,075 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 24 states. [2020-12-09 17:30:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:30:59,622 INFO L93 Difference]: Finished difference Result 205 states and 229 transitions. [2020-12-09 17:30:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 17:30:59,623 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 36 [2020-12-09 17:30:59,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:30:59,624 INFO L225 Difference]: With dead ends: 205 [2020-12-09 17:30:59,624 INFO L226 Difference]: Without dead ends: 204 [2020-12-09 17:30:59,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 445 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=128, Invalid=864, Unknown=0, NotChecked=0, Total=992 [2020-12-09 17:30:59,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-12-09 17:30:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 133. [2020-12-09 17:30:59,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-09 17:30:59,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-12-09 17:30:59,632 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 36 [2020-12-09 17:30:59,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:30:59,632 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-12-09 17:30:59,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 17:30:59,632 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-12-09 17:30:59,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 17:30:59,633 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:30:59,633 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 17:30:59,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:59,833 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:30:59,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:30:59,834 INFO L82 PathProgramCache]: Analyzing trace with hash 899524127, now seen corresponding path program 1 times [2020-12-09 17:30:59,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:30:59,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526306435] [2020-12-09 17:30:59,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:30:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:59,872 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:59,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526306435] [2020-12-09 17:30:59,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609192276] [2020-12-09 17:30:59,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:30:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:30:59,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:30:59,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:30:59,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:30:59,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:31:00,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:00,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1389652277] [2020-12-09 17:31:00,012 INFO L159 IcfgInterpreter]: Started Sifa with 32 locations of interest [2020-12-09 17:31:00,012 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:31:00,012 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:31:00,012 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:31:00,012 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:31:00,211 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:31:00,378 WARN L197 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:31:00,534 WARN L197 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:31:00,685 WARN L197 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:31:02,564 WARN L197 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 90 [2020-12-09 17:31:02,911 WARN L197 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 85 [2020-12-09 17:31:03,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:31:03,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [5, 5, 5] total 31 [2020-12-09 17:31:03,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796797429] [2020-12-09 17:31:03,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 17:31:03,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:31:03,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 17:31:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=802, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:31:03,011 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 24 states. [2020-12-09 17:31:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:31:03,675 INFO L93 Difference]: Finished difference Result 189 states and 216 transitions. [2020-12-09 17:31:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 17:31:03,676 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 36 [2020-12-09 17:31:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:31:03,677 INFO L225 Difference]: With dead ends: 189 [2020-12-09 17:31:03,677 INFO L226 Difference]: Without dead ends: 188 [2020-12-09 17:31:03,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 74 SyntacticMatches, 8 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=134, Invalid=858, Unknown=0, NotChecked=0, Total=992 [2020-12-09 17:31:03,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-12-09 17:31:03,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 133. [2020-12-09 17:31:03,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-12-09 17:31:03,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 157 transitions. [2020-12-09 17:31:03,690 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 157 transitions. Word has length 36 [2020-12-09 17:31:03,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:31:03,690 INFO L481 AbstractCegarLoop]: Abstraction has 133 states and 157 transitions. [2020-12-09 17:31:03,690 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 17:31:03,690 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 157 transitions. [2020-12-09 17:31:03,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 17:31:03,690 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:31:03,691 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-12-09 17:31:03,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable117 [2020-12-09 17:31:03,891 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:31:03,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:31:03,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1584129477, now seen corresponding path program 1 times [2020-12-09 17:31:03,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:31:03,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205804178] [2020-12-09 17:31:03,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:31:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:03,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205804178] [2020-12-09 17:31:03,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403740549] [2020-12-09 17:31:03,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:03,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 17:31:03,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:31:03,979 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:03,979 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:31:04,021 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:04,021 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1091964876] [2020-12-09 17:31:04,022 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2020-12-09 17:31:04,022 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:31:04,023 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:31:04,023 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:31:04,023 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:31:04,195 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:31:04,471 WARN L197 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2020-12-09 17:31:04,613 WARN L197 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:31:04,764 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:31:04,914 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:31:06,795 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2020-12-09 17:31:07,036 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 17:31:07,392 WARN L197 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2020-12-09 17:31:07,486 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:31:07,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:31:07,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-12-09 17:31:07,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843970597] [2020-12-09 17:31:07,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 17:31:07,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:31:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 17:31:07,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:31:07,487 INFO L87 Difference]: Start difference. First operand 133 states and 157 transitions. Second operand 9 states. [2020-12-09 17:31:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:31:07,558 INFO L93 Difference]: Finished difference Result 299 states and 347 transitions. [2020-12-09 17:31:07,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:31:07,558 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-12-09 17:31:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:31:07,559 INFO L225 Difference]: With dead ends: 299 [2020-12-09 17:31:07,559 INFO L226 Difference]: Without dead ends: 204 [2020-12-09 17:31:07,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 79 SyntacticMatches, 6 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 510 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=146, Invalid=784, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:31:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-12-09 17:31:07,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 153. [2020-12-09 17:31:07,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-09 17:31:07,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 181 transitions. [2020-12-09 17:31:07,568 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 181 transitions. Word has length 37 [2020-12-09 17:31:07,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:31:07,568 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 181 transitions. [2020-12-09 17:31:07,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 17:31:07,568 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 181 transitions. [2020-12-09 17:31:07,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 17:31:07,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:31:07,569 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 17:31:07,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:07,770 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:31:07,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:31:07,771 INFO L82 PathProgramCache]: Analyzing trace with hash 713730680, now seen corresponding path program 1 times [2020-12-09 17:31:07,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:31:07,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603634085] [2020-12-09 17:31:07,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:31:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:07,841 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:07,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603634085] [2020-12-09 17:31:07,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442426767] [2020-12-09 17:31:07,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:07,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:31:07,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:31:07,924 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:07,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:31:07,982 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:07,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [182655140] [2020-12-09 17:31:07,983 INFO L159 IcfgInterpreter]: Started Sifa with 33 locations of interest [2020-12-09 17:31:07,983 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:31:07,984 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:31:07,984 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:31:07,984 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:31:08,169 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:31:08,310 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:31:08,463 WARN L197 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:31:08,617 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:31:10,367 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 69 [2020-12-09 17:31:10,871 WARN L197 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 81 [2020-12-09 17:31:11,319 WARN L197 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 89 [2020-12-09 17:31:11,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:31:11,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [5, 5, 5] total 31 [2020-12-09 17:31:11,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059210193] [2020-12-09 17:31:11,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-12-09 17:31:11,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:31:11,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-12-09 17:31:11,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2020-12-09 17:31:11,321 INFO L87 Difference]: Start difference. First operand 153 states and 181 transitions. Second operand 24 states. [2020-12-09 17:31:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:31:11,899 INFO L93 Difference]: Finished difference Result 187 states and 215 transitions. [2020-12-09 17:31:11,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-09 17:31:11,899 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 37 [2020-12-09 17:31:11,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:31:11,901 INFO L225 Difference]: With dead ends: 187 [2020-12-09 17:31:11,901 INFO L226 Difference]: Without dead ends: 185 [2020-12-09 17:31:11,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 76 SyntacticMatches, 9 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992 [2020-12-09 17:31:11,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-12-09 17:31:11,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 135. [2020-12-09 17:31:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-09 17:31:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 157 transitions. [2020-12-09 17:31:11,913 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 157 transitions. Word has length 37 [2020-12-09 17:31:11,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:31:11,913 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 157 transitions. [2020-12-09 17:31:11,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-12-09 17:31:11,913 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 157 transitions. [2020-12-09 17:31:11,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-09 17:31:11,914 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:31:11,914 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-09 17:31:12,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable143 [2020-12-09 17:31:12,115 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:31:12,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:31:12,116 INFO L82 PathProgramCache]: Analyzing trace with hash -134833247, now seen corresponding path program 1 times [2020-12-09 17:31:12,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:31:12,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81415763] [2020-12-09 17:31:12,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:31:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:12,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81415763] [2020-12-09 17:31:12,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32885758] [2020-12-09 17:31:12,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:12,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:31:12,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:31:12,275 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:12,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:31:12,331 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:12,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1871486968] [2020-12-09 17:31:12,332 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2020-12-09 17:31:12,332 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:31:12,332 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:31:12,332 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:31:12,332 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:31:12,556 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:31:12,863 WARN L197 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2020-12-09 17:31:13,041 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:31:13,204 WARN L197 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:31:13,372 WARN L197 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:31:15,845 WARN L197 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2020-12-09 17:31:16,080 WARN L197 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 17:31:16,462 WARN L197 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2020-12-09 17:31:16,574 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:31:16,574 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:31:16,574 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2020-12-09 17:31:16,574 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432740691] [2020-12-09 17:31:16,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-09 17:31:16,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:31:16,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-09 17:31:16,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=921, Unknown=0, NotChecked=0, Total=1056 [2020-12-09 17:31:16,575 INFO L87 Difference]: Start difference. First operand 135 states and 157 transitions. Second operand 9 states. [2020-12-09 17:31:17,718 WARN L197 SmtUtils]: Spent 1.09 s on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-12-09 17:31:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:31:17,918 INFO L93 Difference]: Finished difference Result 234 states and 272 transitions. [2020-12-09 17:31:17,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 17:31:17,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-12-09 17:31:17,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:31:17,919 INFO L225 Difference]: With dead ends: 234 [2020-12-09 17:31:17,920 INFO L226 Difference]: Without dead ends: 136 [2020-12-09 17:31:17,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 78 SyntacticMatches, 8 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 533 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=159, Invalid=1031, Unknown=0, NotChecked=0, Total=1190 [2020-12-09 17:31:17,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-09 17:31:17,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 135. [2020-12-09 17:31:17,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-09 17:31:17,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2020-12-09 17:31:17,932 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 38 [2020-12-09 17:31:17,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:31:17,932 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2020-12-09 17:31:17,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-09 17:31:17,932 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2020-12-09 17:31:17,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-09 17:31:17,933 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:31:17,933 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 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] [2020-12-09 17:31:18,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:18,134 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:31:18,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:31:18,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1854673285, now seen corresponding path program 2 times [2020-12-09 17:31:18,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:31:18,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023837410] [2020-12-09 17:31:18,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:31:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:18,224 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:18,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023837410] [2020-12-09 17:31:18,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183036023] [2020-12-09 17:31:18,225 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:18,374 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-09 17:31:18,374 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 17:31:18,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 17:31:18,378 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:31:18,420 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:18,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:31:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:18,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1697703896] [2020-12-09 17:31:18,524 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2020-12-09 17:31:18,524 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:31:18,524 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:31:18,524 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:31:18,524 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:31:18,717 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:31:19,044 WARN L197 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2020-12-09 17:31:19,197 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:31:19,352 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:31:19,516 WARN L197 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:31:21,726 WARN L197 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2020-12-09 17:31:21,972 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 17:31:22,336 WARN L197 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2020-12-09 17:31:22,454 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:31:22,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:31:22,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2020-12-09 17:31:22,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018160172] [2020-12-09 17:31:22,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-12-09 17:31:22,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:31:22,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-12-09 17:31:22,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 17:31:22,456 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand 17 states. [2020-12-09 17:31:22,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:31:22,587 INFO L93 Difference]: Finished difference Result 337 states and 387 transitions. [2020-12-09 17:31:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 17:31:22,588 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 57 [2020-12-09 17:31:22,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:31:22,589 INFO L225 Difference]: With dead ends: 337 [2020-12-09 17:31:22,589 INFO L226 Difference]: Without dead ends: 242 [2020-12-09 17:31:22,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 131 SyntacticMatches, 10 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 974 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2020-12-09 17:31:22,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-09 17:31:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 175. [2020-12-09 17:31:22,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-09 17:31:22,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 201 transitions. [2020-12-09 17:31:22,598 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 201 transitions. Word has length 57 [2020-12-09 17:31:22,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:31:22,598 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 201 transitions. [2020-12-09 17:31:22,598 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-12-09 17:31:22,598 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 201 transitions. [2020-12-09 17:31:22,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-09 17:31:22,599 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:31:22,599 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 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] [2020-12-09 17:31:22,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2020-12-09 17:31:22,800 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:31:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:31:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash 68243297, now seen corresponding path program 2 times [2020-12-09 17:31:22,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:31:22,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491311553] [2020-12-09 17:31:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:31:22,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:31:22,912 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:22,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491311553] [2020-12-09 17:31:22,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1844782435] [2020-12-09 17:31:22,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:31:23,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-09 17:31:23,223 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 17:31:23,224 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 17:31:23,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:31:23,333 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:23,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:31:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:31:28,802 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [57483663] [2020-12-09 17:31:28,803 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2020-12-09 17:31:28,803 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:31:28,803 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:31:28,803 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:31:28,803 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:31:29,010 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:31:29,487 WARN L197 SmtUtils]: Spent 350.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2020-12-09 17:31:29,667 WARN L197 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:31:29,864 WARN L197 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:31:30,051 WARN L197 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:31:34,125 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-09 17:31:34,669 WARN L197 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-09 17:31:34,992 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2020-12-09 17:31:35,326 WARN L197 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 17:31:35,910 WARN L197 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2020-12-09 17:31:36,119 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:31:36,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:31:36,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 11] total 19 [2020-12-09 17:31:36,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556475962] [2020-12-09 17:31:36,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-09 17:31:36,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:31:36,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-09 17:31:36,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=1550, Unknown=1, NotChecked=0, Total=1806 [2020-12-09 17:31:36,121 INFO L87 Difference]: Start difference. First operand 175 states and 201 transitions. Second operand 19 states. [2020-12-09 17:31:41,063 WARN L197 SmtUtils]: Spent 4.71 s on a formula simplification. DAG size of input: 38 DAG size of output: 10 [2020-12-09 17:31:48,686 WARN L197 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 32 DAG size of output: 10 [2020-12-09 17:31:53,612 WARN L197 SmtUtils]: Spent 818.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 10 [2020-12-09 17:31:57,455 WARN L197 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 10 [2020-12-09 17:32:02,194 WARN L197 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-12-09 17:32:13,085 WARN L197 SmtUtils]: Spent 4.57 s on a formula simplification. DAG size of input: 20 DAG size of output: 10 [2020-12-09 17:32:22,478 WARN L197 SmtUtils]: Spent 2.09 s on a formula simplification that was a NOOP. DAG size: 20 [2020-12-09 17:32:27,180 WARN L197 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 22 [2020-12-09 17:32:34,896 WARN L197 SmtUtils]: Spent 2.30 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 17:32:52,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:32:52,224 INFO L93 Difference]: Finished difference Result 356 states and 402 transitions. [2020-12-09 17:32:52,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-09 17:32:52,233 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-12-09 17:32:52,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:32:52,234 INFO L225 Difference]: With dead ends: 356 [2020-12-09 17:32:52,234 INFO L226 Difference]: Without dead ends: 258 [2020-12-09 17:32:52,235 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 122 SyntacticMatches, 18 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1073 ImplicationChecksByTransitivity, 67.2s TimeCoverageRelationStatistics Valid=468, Invalid=2280, Unknown=8, NotChecked=0, Total=2756 [2020-12-09 17:32:52,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-12-09 17:32:52,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 175. [2020-12-09 17:32:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-09 17:32:52,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 193 transitions. [2020-12-09 17:32:52,245 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 193 transitions. Word has length 58 [2020-12-09 17:32:52,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:32:52,245 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 193 transitions. [2020-12-09 17:32:52,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-09 17:32:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 193 transitions. [2020-12-09 17:32:52,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-12-09 17:32:52,245 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:32:52,245 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 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] [2020-12-09 17:32:52,446 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:32:52,446 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:32:52,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:32:52,446 INFO L82 PathProgramCache]: Analyzing trace with hash -572147973, now seen corresponding path program 3 times [2020-12-09 17:32:52,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:32:52,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807950652] [2020-12-09 17:32:52,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:32:52,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:32:52,645 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:32:52,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807950652] [2020-12-09 17:32:52,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401932645] [2020-12-09 17:32:52,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:32:52,690 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 17:32:52,690 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 17:32:52,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 17:32:52,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:32:52,806 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:32:52,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:32:53,278 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:32:53,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1793888094] [2020-12-09 17:32:53,280 INFO L159 IcfgInterpreter]: Started Sifa with 31 locations of interest [2020-12-09 17:32:53,280 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:32:53,280 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:32:53,280 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:32:53,280 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:32:53,497 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:32:53,955 WARN L197 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 95 [2020-12-09 17:32:54,139 WARN L197 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:32:54,331 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:32:54,524 WARN L197 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:32:55,668 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 44 [2020-12-09 17:32:56,013 WARN L197 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-12-09 17:32:56,328 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2020-12-09 17:32:56,682 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2020-12-09 17:32:56,893 WARN L197 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-12-09 17:32:57,105 WARN L197 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2020-12-09 17:32:57,533 WARN L197 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2020-12-09 17:32:57,820 WARN L197 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 74 [2020-12-09 17:32:58,123 WARN L197 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 77 [2020-12-09 17:32:58,673 WARN L197 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 87 [2020-12-09 17:32:58,851 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:32:58,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:32:58,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2020-12-09 17:32:58,852 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693511108] [2020-12-09 17:32:58,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-09 17:32:58,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:32:58,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-09 17:32:58,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=734, Invalid=2236, Unknown=0, NotChecked=0, Total=2970 [2020-12-09 17:32:58,853 INFO L87 Difference]: Start difference. First operand 175 states and 193 transitions. Second operand 33 states. [2020-12-09 17:32:59,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:32:59,195 INFO L93 Difference]: Finished difference Result 449 states and 515 transitions. [2020-12-09 17:32:59,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-12-09 17:32:59,195 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 97 [2020-12-09 17:32:59,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:32:59,197 INFO L225 Difference]: With dead ends: 449 [2020-12-09 17:32:59,197 INFO L226 Difference]: Without dead ends: 354 [2020-12-09 17:32:59,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 306 GetRequests, 235 SyntacticMatches, 18 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2190 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=734, Invalid=2236, Unknown=0, NotChecked=0, Total=2970 [2020-12-09 17:32:59,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2020-12-09 17:32:59,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 255. [2020-12-09 17:32:59,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-12-09 17:32:59,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 289 transitions. [2020-12-09 17:32:59,210 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 289 transitions. Word has length 97 [2020-12-09 17:32:59,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:32:59,210 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 289 transitions. [2020-12-09 17:32:59,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-09 17:32:59,210 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 289 transitions. [2020-12-09 17:32:59,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-12-09 17:32:59,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:32:59,211 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 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] [2020-12-09 17:32:59,411 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:32:59,412 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:32:59,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:32:59,413 INFO L82 PathProgramCache]: Analyzing trace with hash 1171822305, now seen corresponding path program 3 times [2020-12-09 17:32:59,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:32:59,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119748961] [2020-12-09 17:32:59,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:32:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 17:32:59,696 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:32:59,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119748961] [2020-12-09 17:32:59,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1715650722] [2020-12-09 17:32:59,696 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bf213f7a-75b6-4710-9e3a-f88fb124874e/bin/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 17:32:59,753 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-09 17:32:59,753 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-09 17:32:59,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 33 conjunts are in the unsatisfiable core [2020-12-09 17:32:59,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 17:33:00,131 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:33:00,131 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 17:33:01,773 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 0 proven. 455 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 17:33:01,774 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [690405663] [2020-12-09 17:33:01,775 INFO L159 IcfgInterpreter]: Started Sifa with 34 locations of interest [2020-12-09 17:33:01,775 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 17:33:01,775 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 17:33:01,775 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 17:33:01,775 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 17:33:02,006 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 17:33:02,594 WARN L197 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 93 [2020-12-09 17:33:02,881 WARN L197 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 66 [2020-12-09 17:33:03,191 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2020-12-09 17:33:03,487 WARN L197 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 68 [2020-12-09 17:33:03,798 WARN L197 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 41 [2020-12-09 17:33:03,986 WARN L197 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-12-09 17:33:06,469 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-12-09 17:33:07,401 WARN L197 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 51 [2020-12-09 17:33:07,691 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2020-12-09 17:33:08,018 WARN L197 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2020-12-09 17:33:08,769 WARN L197 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-12-09 17:33:09,132 WARN L197 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 72 [2020-12-09 17:33:09,482 WARN L197 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 75 [2020-12-09 17:33:10,251 WARN L197 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 85 [2020-12-09 17:33:10,541 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 17:33:10,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-12-09 17:33:10,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2020-12-09 17:33:10,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512994083] [2020-12-09 17:33:10,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-12-09 17:33:10,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 17:33:10,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-12-09 17:33:10,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=439, Invalid=2753, Unknown=0, NotChecked=0, Total=3192 [2020-12-09 17:33:10,543 INFO L87 Difference]: Start difference. First operand 255 states and 289 transitions. Second operand 33 states. [2020-12-09 17:33:22,080 WARN L197 SmtUtils]: Spent 9.17 s on a formula simplification. DAG size of input: 38 DAG size of output: 10 [2020-12-09 17:33:33,336 WARN L197 SmtUtils]: Spent 6.69 s on a formula simplification. DAG size of input: 34 DAG size of output: 14 [2020-12-09 17:33:44,436 WARN L197 SmtUtils]: Spent 4.77 s on a formula simplification. DAG size of input: 30 DAG size of output: 10 [2020-12-09 17:33:52,453 WARN L197 SmtUtils]: Spent 2.60 s on a formula simplification. DAG size of input: 26 DAG size of output: 10 [2020-12-09 17:34:01,820 WARN L197 SmtUtils]: Spent 1.60 s on a formula simplification. DAG size of input: 22 DAG size of output: 10 [2020-12-09 17:34:11,233 WARN L197 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 18 DAG size of output: 10 [2020-12-09 17:34:22,490 WARN L197 SmtUtils]: Spent 902.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 10 [2020-12-09 17:34:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 17:34:23,706 INFO L93 Difference]: Finished difference Result 354 states and 404 transitions. [2020-12-09 17:34:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-12-09 17:34:23,707 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 98 [2020-12-09 17:34:23,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 17:34:23,708 INFO L225 Difference]: With dead ends: 354 [2020-12-09 17:34:23,708 INFO L226 Difference]: Without dead ends: 256 [2020-12-09 17:34:23,709 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 222 SyntacticMatches, 32 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 81.8s TimeCoverageRelationStatistics Valid=706, Invalid=3572, Unknown=12, NotChecked=0, Total=4290 [2020-12-09 17:34:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-12-09 17:34:23,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 255. [2020-12-09 17:34:23,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-12-09 17:34:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 279 transitions. [2020-12-09 17:34:23,721 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 279 transitions. Word has length 98 [2020-12-09 17:34:23,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 17:34:23,721 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 279 transitions. [2020-12-09 17:34:23,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-12-09 17:34:23,721 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 279 transitions. [2020-12-09 17:34:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-12-09 17:34:23,722 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 17:34:23,722 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 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] [2020-12-09 17:34:23,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable208 [2020-12-09 17:34:23,924 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr18ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr25ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr32ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr34ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr27ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr30ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr21ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr23ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr17ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr19ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr26ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr33ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr24ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr31ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr28ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr29ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr22ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr35ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr16ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr20ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-12-09 17:34:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 17:34:23,925 INFO L82 PathProgramCache]: Analyzing trace with hash -1564068799, now seen corresponding path program 4 times [2020-12-09 17:34:23,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 17:34:23,925 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283853257] [2020-12-09 17:34:23,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 17:34:23,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 17:34:23,979 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 17:34:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 17:34:24,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 17:34:24,065 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 17:34:24,065 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 17:34:24,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2020-12-09 17:34:24,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 05:34:24 BoogieIcfgContainer [2020-12-09 17:34:24,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 17:34:24,126 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 17:34:24,126 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 17:34:24,126 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 17:34:24,126 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 05:30:32" (3/4) ... [2020-12-09 17:34:24,128 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 17:34:24,128 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 17:34:24,129 INFO L168 Benchmark]: Toolchain (without parser) took 232453.32 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 59.0 MB in the beginning and 72.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 19.0 MB. Max. memory is 16.1 GB. [2020-12-09 17:34:24,129 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 75.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:34:24,129 INFO L168 Benchmark]: CACSL2BoogieTranslator took 216.57 ms. Allocated memory is still 100.7 MB. Free memory was 58.8 MB in the beginning and 72.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 17:34:24,129 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.93 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 70.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:34:24,129 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 68.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:34:24,130 INFO L168 Benchmark]: RCFGBuilder took 597.52 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 68.2 MB in the beginning and 99.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:34:24,130 INFO L168 Benchmark]: TraceAbstraction took 231572.68 ms. Allocated memory is still 132.1 MB. Free memory was 99.4 MB in the beginning and 72.4 MB in the end (delta: 27.0 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. [2020-12-09 17:34:24,130 INFO L168 Benchmark]: Witness Printer took 2.59 ms. Allocated memory is still 132.1 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 17:34:24,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 100.7 MB. Free memory was 75.9 MB in the beginning and 75.8 MB in the end (delta: 136.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 216.57 ms. Allocated memory is still 100.7 MB. Free memory was 58.8 MB in the beginning and 72.6 MB in the end (delta: -13.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.93 ms. Allocated memory is still 100.7 MB. Free memory was 72.6 MB in the beginning and 70.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.40 ms. Allocated memory is still 100.7 MB. Free memory was 70.2 MB in the beginning and 68.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 597.52 ms. Allocated memory was 100.7 MB in the beginning and 132.1 MB in the end (delta: 31.5 MB). Free memory was 68.2 MB in the beginning and 99.4 MB in the end (delta: -31.2 MB). Peak memory consumption was 33.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 231572.68 ms. Allocated memory is still 132.1 MB. Free memory was 99.4 MB in the beginning and 72.4 MB in the end (delta: 27.0 MB). Peak memory consumption was 80.1 MB. Max. memory is 16.1 GB. * Witness Printer took 2.59 ms. Allocated memory is still 132.1 MB. Free memory is still 72.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 167]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseOr at line 165, overapproximation of bitwiseAnd at line 166. Possible FailurePath: [L213] unsigned int a ; [L214] unsigned int ma = __VERIFIER_nondet_uint(); [L215] signed char ea = __VERIFIER_nondet_char(); [L216] unsigned int b ; [L217] unsigned int mb = __VERIFIER_nondet_uint(); [L218] signed char eb = __VERIFIER_nondet_char(); [L219] unsigned int r_mul ; [L220] unsigned int zero ; [L221] unsigned int one ; [L222] int sa ; [L223] int tmp ; [L224] int tmp___0 ; [L225] int tmp___1 ; [L226] int __retres16 ; [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND TRUE ! m [L22] __retres4 = 0U [L72] return (__retres4); [L230] zero = base2flt(0, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND TRUE m < 1U << 24U [L29] COND TRUE 1 [L31] COND FALSE !(e <= -128) [L37] EXPR e - 1 [L37] e = e - 1 [L38] m = m << 1U [L39] COND FALSE !(m < 1U << 24U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L231] one = base2flt(1, 0) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND TRUE m >= 1U << 25U [L56] COND TRUE e >= 127 [L57] __retres4 = 4294967295U [L72] return (__retres4); [L232] a = base2flt(ma, ea) [L17] unsigned int res ; [L18] unsigned int __retres4 ; [L21] COND FALSE !(! m) [L27] COND FALSE !(m < 1U << 24U) [L49] COND TRUE 1 [L51] COND FALSE !(m >= 1U << 25U) [L68] m = m & ~ (1U << 24U) [L69] EXPR e + 128 [L69] res = m | ((unsigned int )(e + 128) << 24U) [L70] __retres4 = res [L72] return (__retres4); [L233] b = base2flt(mb, eb) [L235] COND FALSE !(a < zero) [L238] COND TRUE a > zero [L239] tmp = 1 [L243] sa = tmp [L140] unsigned int res ; [L141] unsigned int ma ; [L142] unsigned int mb ; [L143] unsigned long long accu ; [L144] int ea ; [L145] int eb ; [L146] unsigned int tmp ; [L147] unsigned int __retres10 ; [L150] COND FALSE !(a < b) [L157] COND FALSE !(! b) [L163] ma = a & ((1U << 24U) - 1U) [L164] EXPR (int )(a >> 24U) - 128 [L164] ea = (int )(a >> 24U) - 128 [L165] ma = ma | (1U << 24U) [L166] mb = b & ((1U << 24U) - 1U) [L167] (int )(b >> 24U) - 128 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 122 locations, 36 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 231.4s, OverallIterations: 30, TraceHistogramMax: 24, AutomataDifference: 157.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2743 SDtfs, 4914 SDslu, 8429 SDs, 0 SdLazy, 7226 SolverSat, 469 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 27.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2383 GetRequests, 1642 SyntacticMatches, 157 SemanticMatches, 584 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10908 ImplicationChecksByTransitivity, 190.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255occurred in iteration=28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 29 MinimizatonAttempts, 1293 StatesRemovedByMinimization, 27 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 10.7s InterpolantComputationTime, 1832 NumberOfCodeBlocks, 1832 NumberOfCodeBlocksAsserted, 61 NumberOfCheckSat, 2375 ConstructedInterpolants, 0 QuantifiedInterpolants, 468932 SizeOfPredicates, 35 NumberOfNonLiveVariables, 2559 ConjunctsInSsa, 186 ConjunctsInUnsatCore, 65 InterpolantComputations, 15 PerfectInterpolantSequences, 38/3609 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: OVERALL_TIME[ms]: 2013, ICFG_INTERPRETER_ENTERED_PROCEDURES: 10, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 264, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 419, TOOLS_POST_TIME[ms]: 740, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 419, TOOLS_QUANTIFIERELIM_TIME[ms]: 683, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 89, FLUID_QUERY_TIME[ms]: 13, FLUID_QUERIES: 777, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 20, DOMAIN_WIDEN_TIME[ms]: 708, DOMAIN_ISSUBSETEQ_APPLICATIONS: 30, DOMAIN_ISSUBSETEQ_TIME[ms]: 86, DOMAIN_ISBOTTOM_APPLICATIONS: 264, DOMAIN_ISBOTTOM_TIME[ms]: 345, LOOP_SUMMARIZER_APPLICATIONS: 10, LOOP_SUMMARIZER_CACHE_MISSES: 10, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 928, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 927, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 30, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 8, REGEX_TO_DAG_TIME[ms]: 5, DAG_COMPRESSION_TIME[ms]: 46, DAG_COMPRESSION_PROCESSED_NODES: 4264, DAG_COMPRESSION_RETAINED_NODES: 662, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...