./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 139ef67971e7ed714d59975d45ea043b5c6a1676 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/config using search string *Overflow*32bit*_Bitvector*.epf No suitable settings file found using Overflow*32bit*_Bitvector ERROR: UNSUPPORTED PROPERTY Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 01:58:31,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:58:31,890 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:58:31,969 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:58:31,970 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:58:31,971 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:58:31,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:58:31,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:58:31,989 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:58:31,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:58:31,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:58:31,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:58:31,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:58:31,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:58:31,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:58:31,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:58:32,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:58:32,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:58:32,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:58:32,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:58:32,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:58:32,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:58:32,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:58:32,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:58:32,021 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:58:32,021 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:58:32,021 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:58:32,023 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:58:32,023 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:58:32,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:58:32,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:58:32,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:58:32,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:58:32,028 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:58:32,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:58:32,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:58:32,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:58:32,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:58:32,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:58:32,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:58:32,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:58:32,040 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2020-11-30 01:58:32,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:58:32,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:58:32,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 01:58:32,095 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 01:58:32,096 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 01:58:32,096 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 01:58:32,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 01:58:32,096 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 01:58:32,096 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 01:58:32,096 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 01:58:32,098 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 01:58:32,098 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 01:58:32,098 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 01:58:32,098 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 01:58:32,099 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 01:58:32,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:58:32,100 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:58:32,100 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-30 01:58:32,100 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:58:32,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:58:32,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:58:32,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:58:32,101 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:58:32,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:58:32,101 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-30 01:58:32,101 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:58:32,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:58:32,102 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:58:32,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:58:32,104 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:58:32,104 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:58:32,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:58:32,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:32,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:58:32,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:58:32,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:58:32,105 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 01:58:32,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:58:32,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:58:32,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:58:32,106 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 01:58:32,106 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_c69e812b-1d0c-472f-af8b-b651b5519275/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 139ef67971e7ed714d59975d45ea043b5c6a1676 [2020-11-30 01:58:32,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:58:32,421 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:58:32,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:58:32,432 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:58:32,433 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:58:32,434 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2020-11-30 01:58:32,533 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/data/d194a0b29/e6013a0411fc4fadbd6f8dae9dbd33da/FLAG5798467a0 [2020-11-30 01:58:33,110 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:58:33,111 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2020-11-30 01:58:33,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/data/d194a0b29/e6013a0411fc4fadbd6f8dae9dbd33da/FLAG5798467a0 [2020-11-30 01:58:33,470 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/data/d194a0b29/e6013a0411fc4fadbd6f8dae9dbd33da [2020-11-30 01:58:33,473 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:58:33,474 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:58:33,475 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:33,476 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:58:33,479 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:58:33,480 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:33,482 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b853205 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33, skipping insertion in model container [2020-11-30 01:58:33,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:33,490 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:58:33,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:58:33,807 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:33,816 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:58:33,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:58:33,926 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:58:33,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33 WrapperNode [2020-11-30 01:58:33,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:58:33,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:33,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:58:33,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:58:33,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:33,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:58:34,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:58:34,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:58:34,004 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:58:34,013 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,013 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,053 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... [2020-11-30 01:58:34,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:58:34,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:58:34,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:58:34,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:58:34,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:58:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:58:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:58:34,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:58:34,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:58:34,324 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-11-30 01:58:37,197 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##93: assume !false; [2020-11-30 01:58:37,198 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##92: assume false; [2020-11-30 01:58:37,558 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:58:37,559 INFO L298 CfgBuilder]: Removed 11 assume(true) statements. [2020-11-30 01:58:37,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:37 BoogieIcfgContainer [2020-11-30 01:58:37,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:58:37,563 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:58:37,563 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:58:37,566 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:58:37,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:58:33" (1/3) ... [2020-11-30 01:58:37,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e29d79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:37, skipping insertion in model container [2020-11-30 01:58:37,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:58:33" (2/3) ... [2020-11-30 01:58:37,568 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e29d79f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:58:37, skipping insertion in model container [2020-11-30 01:58:37,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:37" (3/3) ... [2020-11-30 01:58:37,570 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a_alt.BV.c.cil.c [2020-11-30 01:58:37,580 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:58:37,585 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-11-30 01:58:37,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-11-30 01:58:37,635 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:58:37,636 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:58:37,636 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:58:37,636 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:58:37,636 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:58:37,636 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:58:37,637 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:58:37,637 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:58:37,660 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2020-11-30 01:58:37,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 01:58:37,666 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:37,666 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:37,667 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:37,673 INFO L82 PathProgramCache]: Analyzing trace with hash -415170221, now seen corresponding path program 1 times [2020-11-30 01:58:37,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:37,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946341552] [2020-11-30 01:58:37,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:37,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:37,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946341552] [2020-11-30 01:58:37,937 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:37,937 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:37,938 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764348049] [2020-11-30 01:58:37,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:37,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:37,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:37,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:37,960 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 3 states. [2020-11-30 01:58:38,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:38,260 INFO L93 Difference]: Finished difference Result 278 states and 447 transitions. [2020-11-30 01:58:38,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:38,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-11-30 01:58:38,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:38,287 INFO L225 Difference]: With dead ends: 278 [2020-11-30 01:58:38,288 INFO L226 Difference]: Without dead ends: 141 [2020-11-30 01:58:38,292 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-11-30 01:58:38,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-11-30 01:58:38,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-11-30 01:58:38,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 197 transitions. [2020-11-30 01:58:38,339 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 197 transitions. Word has length 11 [2020-11-30 01:58:38,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:38,340 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 197 transitions. [2020-11-30 01:58:38,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:38,340 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 197 transitions. [2020-11-30 01:58:38,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-30 01:58:38,341 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:38,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:38,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:58:38,342 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:38,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:38,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1854593226, now seen corresponding path program 1 times [2020-11-30 01:58:38,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:38,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565407579] [2020-11-30 01:58:38,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:38,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:38,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:38,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565407579] [2020-11-30 01:58:38,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:38,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:38,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47094623] [2020-11-30 01:58:38,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:38,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:38,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:38,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:38,415 INFO L87 Difference]: Start difference. First operand 141 states and 197 transitions. Second operand 3 states. [2020-11-30 01:58:38,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:38,662 INFO L93 Difference]: Finished difference Result 289 states and 403 transitions. [2020-11-30 01:58:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:38,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-11-30 01:58:38,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:38,667 INFO L225 Difference]: With dead ends: 289 [2020-11-30 01:58:38,667 INFO L226 Difference]: Without dead ends: 150 [2020-11-30 01:58:38,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:38,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-11-30 01:58:38,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 142. [2020-11-30 01:58:38,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-11-30 01:58:38,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2020-11-30 01:58:38,693 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 13 [2020-11-30 01:58:38,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:38,693 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2020-11-30 01:58:38,693 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:38,694 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2020-11-30 01:58:38,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 01:58:38,694 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:38,695 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:38,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:58:38,695 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:38,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:38,696 INFO L82 PathProgramCache]: Analyzing trace with hash -96679734, now seen corresponding path program 1 times [2020-11-30 01:58:38,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:38,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563247726] [2020-11-30 01:58:38,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:38,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:38,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:38,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563247726] [2020-11-30 01:58:38,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:38,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:38,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68972593] [2020-11-30 01:58:38,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:38,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:38,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:38,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:38,786 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand 3 states. [2020-11-30 01:58:39,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:39,628 INFO L93 Difference]: Finished difference Result 291 states and 405 transitions. [2020-11-30 01:58:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:39,635 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-11-30 01:58:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:39,636 INFO L225 Difference]: With dead ends: 291 [2020-11-30 01:58:39,636 INFO L226 Difference]: Without dead ends: 151 [2020-11-30 01:58:39,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-11-30 01:58:39,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2020-11-30 01:58:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-11-30 01:58:39,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 199 transitions. [2020-11-30 01:58:39,658 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 199 transitions. Word has length 14 [2020-11-30 01:58:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:39,658 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 199 transitions. [2020-11-30 01:58:39,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:39,659 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 199 transitions. [2020-11-30 01:58:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 01:58:39,660 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:39,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:39,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:58:39,662 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:39,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:39,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1883274053, now seen corresponding path program 1 times [2020-11-30 01:58:39,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:39,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818549860] [2020-11-30 01:58:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:39,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:39,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:39,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818549860] [2020-11-30 01:58:39,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:39,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:39,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816794874] [2020-11-30 01:58:39,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:39,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:39,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:39,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:39,756 INFO L87 Difference]: Start difference. First operand 143 states and 199 transitions. Second operand 3 states. [2020-11-30 01:58:39,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:39,944 INFO L93 Difference]: Finished difference Result 293 states and 407 transitions. [2020-11-30 01:58:39,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:39,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 01:58:39,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:39,950 INFO L225 Difference]: With dead ends: 293 [2020-11-30 01:58:39,950 INFO L226 Difference]: Without dead ends: 152 [2020-11-30 01:58:39,952 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:39,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-11-30 01:58:39,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2020-11-30 01:58:39,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2020-11-30 01:58:39,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2020-11-30 01:58:39,974 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 15 [2020-11-30 01:58:39,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:39,975 INFO L481 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2020-11-30 01:58:39,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:39,975 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2020-11-30 01:58:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:58:39,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:39,977 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:39,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:58:39,978 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:39,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:39,981 INFO L82 PathProgramCache]: Analyzing trace with hash -1880460817, now seen corresponding path program 1 times [2020-11-30 01:58:39,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:39,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983216450] [2020-11-30 01:58:39,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:40,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:40,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:40,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983216450] [2020-11-30 01:58:40,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:40,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:40,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444614840] [2020-11-30 01:58:40,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:40,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:40,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:40,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:40,049 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 3 states. [2020-11-30 01:58:40,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:40,267 INFO L93 Difference]: Finished difference Result 295 states and 409 transitions. [2020-11-30 01:58:40,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:40,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-11-30 01:58:40,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:40,274 INFO L225 Difference]: With dead ends: 295 [2020-11-30 01:58:40,274 INFO L226 Difference]: Without dead ends: 153 [2020-11-30 01:58:40,275 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:40,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-11-30 01:58:40,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2020-11-30 01:58:40,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-11-30 01:58:40,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 201 transitions. [2020-11-30 01:58:40,301 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 201 transitions. Word has length 16 [2020-11-30 01:58:40,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:40,302 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 201 transitions. [2020-11-30 01:58:40,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:40,302 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 201 transitions. [2020-11-30 01:58:40,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-30 01:58:40,304 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:40,304 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:40,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-30 01:58:40,305 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:40,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:40,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1806727271, now seen corresponding path program 1 times [2020-11-30 01:58:40,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:40,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732090550] [2020-11-30 01:58:40,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:40,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:40,378 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732090550] [2020-11-30 01:58:40,378 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:40,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:40,379 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897861883] [2020-11-30 01:58:40,379 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:40,379 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:40,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:40,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:40,380 INFO L87 Difference]: Start difference. First operand 145 states and 201 transitions. Second operand 3 states. [2020-11-30 01:58:40,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:40,643 INFO L93 Difference]: Finished difference Result 325 states and 457 transitions. [2020-11-30 01:58:40,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:40,644 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-30 01:58:40,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:40,645 INFO L225 Difference]: With dead ends: 325 [2020-11-30 01:58:40,646 INFO L226 Difference]: Without dead ends: 182 [2020-11-30 01:58:40,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:40,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-11-30 01:58:40,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2020-11-30 01:58:40,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-11-30 01:58:40,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 237 transitions. [2020-11-30 01:58:40,666 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 237 transitions. Word has length 26 [2020-11-30 01:58:40,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:40,666 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 237 transitions. [2020-11-30 01:58:40,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:40,666 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 237 transitions. [2020-11-30 01:58:40,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 01:58:40,667 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:40,668 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:40,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-30 01:58:40,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:40,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:40,669 INFO L82 PathProgramCache]: Analyzing trace with hash 649342501, now seen corresponding path program 1 times [2020-11-30 01:58:40,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:40,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585876303] [2020-11-30 01:58:40,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:40,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:40,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585876303] [2020-11-30 01:58:40,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:40,743 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:40,743 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522134722] [2020-11-30 01:58:40,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:40,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:40,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:40,744 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:40,744 INFO L87 Difference]: Start difference. First operand 168 states and 237 transitions. Second operand 3 states. [2020-11-30 01:58:41,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:41,043 INFO L93 Difference]: Finished difference Result 360 states and 516 transitions. [2020-11-30 01:58:41,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:41,044 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-11-30 01:58:41,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:41,046 INFO L225 Difference]: With dead ends: 360 [2020-11-30 01:58:41,046 INFO L226 Difference]: Without dead ends: 194 [2020-11-30 01:58:41,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:41,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-11-30 01:58:41,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 180. [2020-11-30 01:58:41,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-11-30 01:58:41,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 260 transitions. [2020-11-30 01:58:41,056 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 260 transitions. Word has length 27 [2020-11-30 01:58:41,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:41,056 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 260 transitions. [2020-11-30 01:58:41,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:41,056 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 260 transitions. [2020-11-30 01:58:41,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 01:58:41,058 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:41,058 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:41,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-30 01:58:41,059 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:41,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:41,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1041355235, now seen corresponding path program 1 times [2020-11-30 01:58:41,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:41,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385330854] [2020-11-30 01:58:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:41,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:41,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385330854] [2020-11-30 01:58:41,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:41,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:41,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423077981] [2020-11-30 01:58:41,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:41,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:41,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:41,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:41,116 INFO L87 Difference]: Start difference. First operand 180 states and 260 transitions. Second operand 3 states. [2020-11-30 01:58:41,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:41,644 INFO L93 Difference]: Finished difference Result 387 states and 565 transitions. [2020-11-30 01:58:41,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:41,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-11-30 01:58:41,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:41,647 INFO L225 Difference]: With dead ends: 387 [2020-11-30 01:58:41,647 INFO L226 Difference]: Without dead ends: 209 [2020-11-30 01:58:41,647 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-11-30 01:58:41,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-11-30 01:58:41,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-11-30 01:58:41,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 306 transitions. [2020-11-30 01:58:41,657 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 306 transitions. Word has length 38 [2020-11-30 01:58:41,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:41,657 INFO L481 AbstractCegarLoop]: Abstraction has 209 states and 306 transitions. [2020-11-30 01:58:41,658 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:41,658 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 306 transitions. [2020-11-30 01:58:41,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-30 01:58:41,659 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:41,660 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:41,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-30 01:58:41,660 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:41,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:41,660 INFO L82 PathProgramCache]: Analyzing trace with hash 579005067, now seen corresponding path program 1 times [2020-11-30 01:58:41,661 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:41,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638738751] [2020-11-30 01:58:41,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:41,684 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:58:41,685 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1015751684] [2020-11-30 01:58:41,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:58:41,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:41,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:58:41,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:58:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:41,926 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 01:58:41,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:41,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638738751] [2020-11-30 01:58:41,957 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:58:41,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1015751684] [2020-11-30 01:58:41,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:41,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2020-11-30 01:58:41,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177846089] [2020-11-30 01:58:41,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:58:41,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:41,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:58:41,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:58:41,959 INFO L87 Difference]: Start difference. First operand 209 states and 306 transitions. Second operand 4 states. [2020-11-30 01:58:42,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:42,693 INFO L93 Difference]: Finished difference Result 515 states and 773 transitions. [2020-11-30 01:58:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:58:42,698 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-11-30 01:58:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:42,704 INFO L225 Difference]: With dead ends: 515 [2020-11-30 01:58:42,704 INFO L226 Difference]: Without dead ends: 308 [2020-11-30 01:58:42,705 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:58:42,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-11-30 01:58:42,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2020-11-30 01:58:42,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-11-30 01:58:42,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 410 transitions. [2020-11-30 01:58:42,730 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 410 transitions. Word has length 38 [2020-11-30 01:58:42,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:42,731 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 410 transitions. [2020-11-30 01:58:42,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:58:42,734 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 410 transitions. [2020-11-30 01:58:42,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-30 01:58:42,738 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:42,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:42,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-30 01:58:42,940 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:42,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:42,940 INFO L82 PathProgramCache]: Analyzing trace with hash -393642880, now seen corresponding path program 1 times [2020-11-30 01:58:42,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:42,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858710515] [2020-11-30 01:58:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:42,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:58:42,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858710515] [2020-11-30 01:58:42,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:42,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:58:42,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495250614] [2020-11-30 01:58:42,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:42,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:42,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:42,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:42,982 INFO L87 Difference]: Start difference. First operand 292 states and 410 transitions. Second operand 3 states. [2020-11-30 01:58:43,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:43,382 INFO L93 Difference]: Finished difference Result 380 states and 530 transitions. [2020-11-30 01:58:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:43,384 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-11-30 01:58:43,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:43,387 INFO L225 Difference]: With dead ends: 380 [2020-11-30 01:58:43,387 INFO L226 Difference]: Without dead ends: 349 [2020-11-30 01:58:43,387 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:43,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2020-11-30 01:58:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2020-11-30 01:58:43,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2020-11-30 01:58:43,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 496 transitions. [2020-11-30 01:58:43,408 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 496 transitions. Word has length 40 [2020-11-30 01:58:43,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:43,409 INFO L481 AbstractCegarLoop]: Abstraction has 349 states and 496 transitions. [2020-11-30 01:58:43,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:43,409 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 496 transitions. [2020-11-30 01:58:43,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-11-30 01:58:43,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:43,411 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:43,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-30 01:58:43,412 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:43,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:43,413 INFO L82 PathProgramCache]: Analyzing trace with hash -1931707924, now seen corresponding path program 1 times [2020-11-30 01:58:43,413 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:43,413 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002320264] [2020-11-30 01:58:43,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:43,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:58:43,490 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 01:58:43,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002320264] [2020-11-30 01:58:43,494 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:58:43,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:58:43,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032647043] [2020-11-30 01:58:43,495 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 01:58:43,495 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 01:58:43,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 01:58:43,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:43,496 INFO L87 Difference]: Start difference. First operand 349 states and 496 transitions. Second operand 3 states. [2020-11-30 01:58:43,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:58:43,835 INFO L93 Difference]: Finished difference Result 717 states and 1021 transitions. [2020-11-30 01:58:43,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 01:58:43,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-11-30 01:58:43,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:58:43,839 INFO L225 Difference]: With dead ends: 717 [2020-11-30 01:58:43,839 INFO L226 Difference]: Without dead ends: 370 [2020-11-30 01:58:43,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 01:58:43,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2020-11-30 01:58:43,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2020-11-30 01:58:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2020-11-30 01:58:43,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 518 transitions. [2020-11-30 01:58:43,864 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 518 transitions. Word has length 59 [2020-11-30 01:58:43,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:58:43,866 INFO L481 AbstractCegarLoop]: Abstraction has 368 states and 518 transitions. [2020-11-30 01:58:43,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 01:58:43,866 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 518 transitions. [2020-11-30 01:58:43,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-30 01:58:43,868 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:58:43,868 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:58:43,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-30 01:58:43,869 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-30 01:58:43,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:58:43,869 INFO L82 PathProgramCache]: Analyzing trace with hash -305123723, now seen corresponding path program 1 times [2020-11-30 01:58:43,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 01:58:43,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143615502] [2020-11-30 01:58:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:58:43,891 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:58:43,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [168504234] [2020-11-30 01:58:43,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c69e812b-1d0c-472f-af8b-b651b5519275/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:58:44,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:44,031 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:44,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:58:44,071 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:58:44,164 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-30 01:58:44,164 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:58:44,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-30 01:58:44,486 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:58:44 BoogieIcfgContainer [2020-11-30 01:58:44,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:58:44,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:58:44,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:58:44,488 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:58:44,488 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:58:37" (3/4) ... [2020-11-30 01:58:44,491 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-30 01:58:44,491 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:58:44,492 INFO L168 Benchmark]: Toolchain (without parser) took 11017.53 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 73.8 MB in the beginning and 76.4 MB in the end (delta: -2.6 MB). Peak memory consumption was 22.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:44,493 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 47.2 MB in the beginning and 47.2 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:58:44,494 INFO L168 Benchmark]: CACSL2BoogieTranslator took 451.75 ms. Allocated memory is still 104.9 MB. Free memory was 73.5 MB in the beginning and 77.1 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:44,494 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.92 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 74.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:44,495 INFO L168 Benchmark]: Boogie Preprocessor took 55.40 ms. Allocated memory is still 104.9 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:44,497 INFO L168 Benchmark]: RCFGBuilder took 3501.56 ms. Allocated memory is still 104.9 MB. Free memory was 72.0 MB in the beginning and 68.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:44,498 INFO L168 Benchmark]: TraceAbstraction took 6924.33 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 77.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:44,499 INFO L168 Benchmark]: Witness Printer took 3.44 ms. Allocated memory is still 130.0 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:58:44,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 75.5 MB. Free memory was 47.2 MB in the beginning and 47.2 MB in the end (delta: 30.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 451.75 ms. Allocated memory is still 104.9 MB. Free memory was 73.5 MB in the beginning and 77.1 MB in the end (delta: -3.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 74.92 ms. Allocated memory is still 104.9 MB. Free memory was 77.1 MB in the beginning and 74.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.40 ms. Allocated memory is still 104.9 MB. Free memory was 74.1 MB in the beginning and 72.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 3501.56 ms. Allocated memory is still 104.9 MB. Free memory was 72.0 MB in the beginning and 68.2 MB in the end (delta: 3.8 MB). Peak memory consumption was 44.2 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6924.33 ms. Allocated memory was 104.9 MB in the beginning and 130.0 MB in the end (delta: 25.2 MB). Free memory was 67.5 MB in the beginning and 77.5 MB in the end (delta: -10.0 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 3.44 ms. Allocated memory is still 130.0 MB. Free memory was 77.5 MB in the beginning and 76.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 548]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 93. Possible FailurePath: [L692] int s ; [L693] int tmp ; [L697] s = 8464 [L17] int s__info_callback = __VERIFIER_nondet_int(); [L18] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L19] int s__state ; [L20] int s__new_session ; [L21] int s__server ; [L22] int s__version = __VERIFIER_nondet_int(); [L23] int s__type ; [L24] int s__init_num ; [L25] int s__hit = __VERIFIER_nondet_int(); [L26] int s__rwstate ; [L27] int s__init_buf___0 ; [L28] int s__debug = __VERIFIER_nondet_int(); [L29] int s__shutdown ; [L30] int s__cert = __VERIFIER_nondet_int(); [L31] int s__options = __VERIFIER_nondet_int(); [L32] int s__verify_mode = __VERIFIER_nondet_int(); [L33] int s__session__peer = __VERIFIER_nondet_int(); [L34] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int(); [L35] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L36] int s__ctx__stats__sess_accept_renegotiate ; [L37] int s__ctx__stats__sess_accept ; [L38] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__cert_request ; [L40] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L41] int s__s3__tmp__use_rsa_tmp ; [L42] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L43] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L44] int s__s3__tmp__next_state___0 ; [L45] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int(); [L46] int s__session__cipher ; [L47] int buf = __VERIFIER_nondet_int(); [L48] unsigned long l ; [L49] unsigned long Time ; [L50] unsigned long tmp = __VERIFIER_nondet_ulong(); [L51] int cb ; [L52] long num1 ; [L53] int ret ; [L54] int new_state ; [L55] int state ; [L56] int skip ; [L57] int got_new_session ; [L58] int tmp___1 = __VERIFIER_nondet_int(); [L59] int tmp___2 = __VERIFIER_nondet_int(); [L60] int tmp___3 ; [L61] int tmp___4 ; [L62] int tmp___5 ; [L63] int tmp___6 ; [L64] int tmp___7 ; [L65] long tmp___8 = __VERIFIER_nondet_long(); [L66] int tmp___9 ; [L67] int tmp___10 ; [L68] int blastFlag ; [L69] int ag_X ; [L70] int ag_Y = __VERIFIER_nondet_int(); [L71] int ag_Z ; [L72] int __retres70 ; [L3] COND FALSE !(!cond) [L76] s__state = initial_state [L77] blastFlag = 0 [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L92] s__in_handshake = s__in_handshake + 1 [L93] COND TRUE tmp___1 & 12288 [L94] COND TRUE tmp___2 & 16384 [L102] COND FALSE !(s__cert == 0) [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND TRUE s__state == 8464 [L294] s__shutdown = 0 [L295] ret = __VERIFIER_nondet_int() [L296] COND TRUE blastFlag == 0 [L297] blastFlag = 1 [L301] COND FALSE !(ret <= 0) [L306] got_new_session = 1 [L307] s__state = 8496 [L308] s__init_num = 0 [L641] COND FALSE !(! s__s3__tmp__reuse_message) [L670] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND TRUE s__state == 8496 [L312] ret = __VERIFIER_nondet_int() [L313] COND TRUE blastFlag == 1 [L314] blastFlag = 2 [L318] COND FALSE !(ret <= 0) [L323] COND TRUE \read(s__hit) [L324] s__state = 8656 [L328] s__init_num = 0 [L641] COND FALSE !(! s__s3__tmp__reuse_message) [L670] skip = 0 [L109] COND TRUE 1 [L111] state = s__state [L112] COND FALSE !(s__state == 12292) [L115] COND FALSE !(s__state == 16384) [L118] COND FALSE !(s__state == 8192) [L121] COND FALSE !(s__state == 24576) [L124] COND FALSE !(s__state == 8195) [L127] COND FALSE !(s__state == 8480) [L130] COND FALSE !(s__state == 8481) [L133] COND FALSE !(s__state == 8482) [L136] COND FALSE !(s__state == 8464) [L139] COND FALSE !(s__state == 8465) [L142] COND FALSE !(s__state == 8466) [L145] COND FALSE !(s__state == 8496) [L148] COND FALSE !(s__state == 8497) [L151] COND FALSE !(s__state == 8512) [L154] COND FALSE !(s__state == 8513) [L157] COND FALSE !(s__state == 8528) [L160] COND FALSE !(s__state == 8529) [L163] COND FALSE !(s__state == 8544) [L166] COND FALSE !(s__state == 8545) [L169] COND FALSE !(s__state == 8560) [L172] COND FALSE !(s__state == 8561) [L175] COND FALSE !(s__state == 8448) [L178] COND FALSE !(s__state == 8576) [L181] COND FALSE !(s__state == 8577) [L184] COND FALSE !(s__state == 8592) [L187] COND FALSE !(s__state == 8593) [L190] COND FALSE !(s__state == 8608) [L193] COND FALSE !(s__state == 8609) [L196] COND FALSE !(s__state == 8640) [L199] COND FALSE !(s__state == 8641) [L202] COND TRUE s__state == 8656 [L529] s__session__cipher = s__s3__tmp__new_cipher [L530] tmp___9 = __VERIFIER_nondet_int() [L531] COND FALSE !(! tmp___9) [L537] ret = __VERIFIER_nondet_int() [L538] COND TRUE blastFlag == 2 [L539] blastFlag = 3 [L543] COND FALSE !(ret <= 0) [L548] ag_X * ag_Y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 12 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1332 SDtfs, 1395 SDslu, 335 SDs, 0 SdLazy, 1056 SolverSat, 381 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 78 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 28572 SizeOfPredicates, 4 NumberOfNonLiveVariables, 144 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 39/39 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...