./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/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_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/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 00d015cea7b11aabc3ddec4842024b6b03cb0eb9 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis No suitable file found in config dir /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/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 0.1.25-f470102 [2019-12-07 13:08:43,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 13:08:43,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 13:08:43,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 13:08:43,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 13:08:43,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 13:08:43,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 13:08:43,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 13:08:43,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 13:08:43,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 13:08:43,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 13:08:43,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 13:08:43,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 13:08:43,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 13:08:43,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 13:08:43,243 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 13:08:43,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 13:08:43,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 13:08:43,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 13:08:43,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 13:08:43,248 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 13:08:43,249 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 13:08:43,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 13:08:43,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 13:08:43,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 13:08:43,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 13:08:43,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 13:08:43,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 13:08:43,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 13:08:43,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 13:08:43,253 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 13:08:43,254 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 13:08:43,254 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 13:08:43,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 13:08:43,255 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 13:08:43,255 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 13:08:43,256 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 13:08:43,256 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 13:08:43,256 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 13:08:43,257 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 13:08:43,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 13:08:43,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/config/svcomp-Overflow-32bit-Taipan_Default.epf [2019-12-07 13:08:43,267 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 13:08:43,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 13:08:43,268 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 13:08:43,268 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 13:08:43,268 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 13:08:43,268 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 13:08:43,268 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 13:08:43,268 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 13:08:43,269 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 13:08:43,269 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 13:08:43,269 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 13:08:43,269 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 13:08:43,269 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 13:08:43,269 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 13:08:43,269 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 13:08:43,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 13:08:43,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 13:08:43,271 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2019-12-07 13:08:43,271 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 13:08:43,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 13:08:43,271 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 13:08:43,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 13:08:43,271 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 13:08:43,271 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 13:08:43,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 13:08:43,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 13:08:43,272 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 13:08:43,272 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 13:08:43,272 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 13:08:43,272 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 13:08:43,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 13:08:43,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 13:08:43,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 13:08:43,273 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 13:08:43,273 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_6be1654d-9460-4dc3-a491-be01a200e049/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 -> 00d015cea7b11aabc3ddec4842024b6b03cb0eb9 [2019-12-07 13:08:43,374 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 13:08:43,382 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 13:08:43,384 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 13:08:43,385 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 13:08:43,385 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 13:08:43,386 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/../../sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2019-12-07 13:08:43,422 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/data/aa67cee0a/ac450ba5461d43acbcf02b7c0fbf02f2/FLAGec5fa79a0 [2019-12-07 13:08:43,792 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 13:08:43,792 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/sv-benchmarks/c/bitvector/s3_srvr_1a_alt.BV.c.cil.c [2019-12-07 13:08:43,800 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/data/aa67cee0a/ac450ba5461d43acbcf02b7c0fbf02f2/FLAGec5fa79a0 [2019-12-07 13:08:43,809 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/bin/utaipan/data/aa67cee0a/ac450ba5461d43acbcf02b7c0fbf02f2 [2019-12-07 13:08:43,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 13:08:43,812 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 13:08:43,813 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 13:08:43,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 13:08:43,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 13:08:43,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:08:43" (1/1) ... [2019-12-07 13:08:43,817 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b211656 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:43, skipping insertion in model container [2019-12-07 13:08:43,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 01:08:43" (1/1) ... [2019-12-07 13:08:43,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 13:08:43,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 13:08:44,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:08:44,024 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 13:08:44,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 13:08:44,069 INFO L208 MainTranslator]: Completed translation [2019-12-07 13:08:44,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44 WrapperNode [2019-12-07 13:08:44,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 13:08:44,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 13:08:44,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 13:08:44,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 13:08:44,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,107 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 13:08:44,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 13:08:44,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 13:08:44,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 13:08:44,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,116 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,130 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... [2019-12-07 13:08:44,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 13:08:44,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 13:08:44,133 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 13:08:44,133 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 13:08:44,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/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 [2019-12-07 13:08:44,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 13:08:44,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 13:08:44,242 WARN L738 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-12-07 13:08:44,547 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2019-12-07 13:08:44,548 INFO L691 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2019-12-07 13:08:44,661 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 13:08:44,661 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 13:08:44,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:08:44 BoogieIcfgContainer [2019-12-07 13:08:44,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 13:08:44,663 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 13:08:44,663 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 13:08:44,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 13:08:44,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 01:08:43" (1/3) ... [2019-12-07 13:08:44,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bda1399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:08:44, skipping insertion in model container [2019-12-07 13:08:44,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 01:08:44" (2/3) ... [2019-12-07 13:08:44,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bda1399 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 01:08:44, skipping insertion in model container [2019-12-07 13:08:44,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:08:44" (3/3) ... [2019-12-07 13:08:44,667 INFO L109 eAbstractionObserver]: Analyzing ICFG s3_srvr_1a_alt.BV.c.cil.c [2019-12-07 13:08:44,673 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 13:08:44,679 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2019-12-07 13:08:44,686 INFO L249 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2019-12-07 13:08:44,703 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 13:08:44,703 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 13:08:44,703 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 13:08:44,703 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 13:08:44,703 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 13:08:44,703 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 13:08:44,704 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 13:08:44,704 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 13:08:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-12-07 13:08:44,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 13:08:44,721 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:44,722 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:08:44,722 INFO L410 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]=== [2019-12-07 13:08:44,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:44,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1042426614, now seen corresponding path program 1 times [2019-12-07 13:08:44,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:44,732 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893416888] [2019-12-07 13:08:44,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:44,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:44,847 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893416888] [2019-12-07 13:08:44,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:44,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:44,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624710518] [2019-12-07 13:08:44,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:44,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:44,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:44,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:44,862 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 3 states. [2019-12-07 13:08:44,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:44,993 INFO L93 Difference]: Finished difference Result 278 states and 447 transitions. [2019-12-07 13:08:44,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:44,995 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-12-07 13:08:44,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,007 INFO L225 Difference]: With dead ends: 278 [2019-12-07 13:08:45,007 INFO L226 Difference]: Without dead ends: 141 [2019-12-07 13:08:45,010 INFO L630 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 [2019-12-07 13:08:45,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2019-12-07 13:08:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2019-12-07 13:08:45,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-12-07 13:08:45,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 197 transitions. [2019-12-07 13:08:45,045 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 197 transitions. Word has length 11 [2019-12-07 13:08:45,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,046 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 197 transitions. [2019-12-07 13:08:45,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,046 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 197 transitions. [2019-12-07 13:08:45,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 13:08:45,046 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,046 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:08:45,047 INFO L410 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]=== [2019-12-07 13:08:45,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,047 INFO L82 PathProgramCache]: Analyzing trace with hash 474397028, now seen corresponding path program 1 times [2019-12-07 13:08:45,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,047 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552036989] [2019-12-07 13:08:45,048 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:45,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:45,077 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552036989] [2019-12-07 13:08:45,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:45,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:45,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137110583] [2019-12-07 13:08:45,079 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:45,079 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:45,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:45,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:45,080 INFO L87 Difference]: Start difference. First operand 141 states and 197 transitions. Second operand 3 states. [2019-12-07 13:08:45,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:45,180 INFO L93 Difference]: Finished difference Result 289 states and 403 transitions. [2019-12-07 13:08:45,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:45,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-12-07 13:08:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,182 INFO L225 Difference]: With dead ends: 289 [2019-12-07 13:08:45,182 INFO L226 Difference]: Without dead ends: 150 [2019-12-07 13:08:45,183 INFO L630 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 [2019-12-07 13:08:45,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2019-12-07 13:08:45,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 142. [2019-12-07 13:08:45,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-12-07 13:08:45,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 198 transitions. [2019-12-07 13:08:45,193 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 198 transitions. Word has length 13 [2019-12-07 13:08:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,193 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 198 transitions. [2019-12-07 13:08:45,193 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,193 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 198 transitions. [2019-12-07 13:08:45,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-12-07 13:08:45,194 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,194 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:08:45,194 INFO L410 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]=== [2019-12-07 13:08:45,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,194 INFO L82 PathProgramCache]: Analyzing trace with hash -790889938, now seen corresponding path program 1 times [2019-12-07 13:08:45,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,195 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749835103] [2019-12-07 13:08:45,195 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:45,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:45,220 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749835103] [2019-12-07 13:08:45,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:45,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:45,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526237865] [2019-12-07 13:08:45,220 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:45,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:45,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:45,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:45,221 INFO L87 Difference]: Start difference. First operand 142 states and 198 transitions. Second operand 3 states. [2019-12-07 13:08:45,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:45,302 INFO L93 Difference]: Finished difference Result 291 states and 405 transitions. [2019-12-07 13:08:45,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:45,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-12-07 13:08:45,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,303 INFO L225 Difference]: With dead ends: 291 [2019-12-07 13:08:45,304 INFO L226 Difference]: Without dead ends: 151 [2019-12-07 13:08:45,305 INFO L630 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 [2019-12-07 13:08:45,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2019-12-07 13:08:45,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 143. [2019-12-07 13:08:45,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2019-12-07 13:08:45,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 199 transitions. [2019-12-07 13:08:45,315 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 199 transitions. Word has length 14 [2019-12-07 13:08:45,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,315 INFO L462 AbstractCegarLoop]: Abstraction has 143 states and 199 transitions. [2019-12-07 13:08:45,315 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,315 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 199 transitions. [2019-12-07 13:08:45,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-12-07 13:08:45,316 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,316 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:08:45,316 INFO L410 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]=== [2019-12-07 13:08:45,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1807417943, now seen corresponding path program 1 times [2019-12-07 13:08:45,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,317 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30198813] [2019-12-07 13:08:45,317 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:45,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:45,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30198813] [2019-12-07 13:08:45,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:45,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:45,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182087577] [2019-12-07 13:08:45,345 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:45,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:45,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:45,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:45,346 INFO L87 Difference]: Start difference. First operand 143 states and 199 transitions. Second operand 3 states. [2019-12-07 13:08:45,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:45,430 INFO L93 Difference]: Finished difference Result 293 states and 407 transitions. [2019-12-07 13:08:45,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:45,430 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-12-07 13:08:45,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,431 INFO L225 Difference]: With dead ends: 293 [2019-12-07 13:08:45,432 INFO L226 Difference]: Without dead ends: 152 [2019-12-07 13:08:45,432 INFO L630 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 [2019-12-07 13:08:45,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-12-07 13:08:45,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 144. [2019-12-07 13:08:45,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states. [2019-12-07 13:08:45,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 200 transitions. [2019-12-07 13:08:45,441 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 200 transitions. Word has length 15 [2019-12-07 13:08:45,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,441 INFO L462 AbstractCegarLoop]: Abstraction has 144 states and 200 transitions. [2019-12-07 13:08:45,441 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,441 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 200 transitions. [2019-12-07 13:08:45,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-12-07 13:08:45,442 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,442 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 13:08:45,442 INFO L410 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]=== [2019-12-07 13:08:45,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,442 INFO L82 PathProgramCache]: Analyzing trace with hash 592614547, now seen corresponding path program 1 times [2019-12-07 13:08:45,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,443 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988955989] [2019-12-07 13:08:45,443 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:45,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:45,470 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988955989] [2019-12-07 13:08:45,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:45,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:45,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211874349] [2019-12-07 13:08:45,471 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:45,471 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:45,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:45,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:45,472 INFO L87 Difference]: Start difference. First operand 144 states and 200 transitions. Second operand 3 states. [2019-12-07 13:08:45,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:45,558 INFO L93 Difference]: Finished difference Result 295 states and 409 transitions. [2019-12-07 13:08:45,558 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:45,558 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-12-07 13:08:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,559 INFO L225 Difference]: With dead ends: 295 [2019-12-07 13:08:45,559 INFO L226 Difference]: Without dead ends: 153 [2019-12-07 13:08:45,560 INFO L630 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 [2019-12-07 13:08:45,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-12-07 13:08:45,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2019-12-07 13:08:45,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-12-07 13:08:45,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 201 transitions. [2019-12-07 13:08:45,569 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 201 transitions. Word has length 16 [2019-12-07 13:08:45,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,569 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 201 transitions. [2019-12-07 13:08:45,569 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,569 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 201 transitions. [2019-12-07 13:08:45,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-12-07 13:08:45,570 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,571 INFO L410 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] [2019-12-07 13:08:45,571 INFO L410 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]=== [2019-12-07 13:08:45,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1809291799, now seen corresponding path program 1 times [2019-12-07 13:08:45,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,571 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010004348] [2019-12-07 13:08:45,571 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:45,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:45,605 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010004348] [2019-12-07 13:08:45,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:45,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:45,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497560848] [2019-12-07 13:08:45,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:45,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:45,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:45,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:45,607 INFO L87 Difference]: Start difference. First operand 145 states and 201 transitions. Second operand 3 states. [2019-12-07 13:08:45,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:45,701 INFO L93 Difference]: Finished difference Result 325 states and 457 transitions. [2019-12-07 13:08:45,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:45,702 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2019-12-07 13:08:45,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,703 INFO L225 Difference]: With dead ends: 325 [2019-12-07 13:08:45,703 INFO L226 Difference]: Without dead ends: 182 [2019-12-07 13:08:45,703 INFO L630 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 [2019-12-07 13:08:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2019-12-07 13:08:45,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 168. [2019-12-07 13:08:45,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-12-07 13:08:45,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 237 transitions. [2019-12-07 13:08:45,711 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 237 transitions. Word has length 26 [2019-12-07 13:08:45,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,711 INFO L462 AbstractCegarLoop]: Abstraction has 168 states and 237 transitions. [2019-12-07 13:08:45,711 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,711 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 237 transitions. [2019-12-07 13:08:45,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-12-07 13:08:45,712 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,712 INFO L410 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] [2019-12-07 13:08:45,712 INFO L410 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]=== [2019-12-07 13:08:45,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1821477165, now seen corresponding path program 1 times [2019-12-07 13:08:45,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,713 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331676270] [2019-12-07 13:08:45,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:45,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:45,739 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331676270] [2019-12-07 13:08:45,739 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:45,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:45,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356766013] [2019-12-07 13:08:45,739 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:45,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:45,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:45,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:45,740 INFO L87 Difference]: Start difference. First operand 168 states and 237 transitions. Second operand 3 states. [2019-12-07 13:08:45,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:45,818 INFO L93 Difference]: Finished difference Result 360 states and 516 transitions. [2019-12-07 13:08:45,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:45,819 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-12-07 13:08:45,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,820 INFO L225 Difference]: With dead ends: 360 [2019-12-07 13:08:45,820 INFO L226 Difference]: Without dead ends: 194 [2019-12-07 13:08:45,821 INFO L630 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 [2019-12-07 13:08:45,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-12-07 13:08:45,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 180. [2019-12-07 13:08:45,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2019-12-07 13:08:45,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 260 transitions. [2019-12-07 13:08:45,827 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 260 transitions. Word has length 27 [2019-12-07 13:08:45,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,827 INFO L462 AbstractCegarLoop]: Abstraction has 180 states and 260 transitions. [2019-12-07 13:08:45,827 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,827 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 260 transitions. [2019-12-07 13:08:45,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-07 13:08:45,829 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,829 INFO L410 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] [2019-12-07 13:08:45,829 INFO L410 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]=== [2019-12-07 13:08:45,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,829 INFO L82 PathProgramCache]: Analyzing trace with hash -209400343, now seen corresponding path program 1 times [2019-12-07 13:08:45,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,829 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731257516] [2019-12-07 13:08:45,829 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:45,853 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:45,853 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731257516] [2019-12-07 13:08:45,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:45,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:45,854 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797238145] [2019-12-07 13:08:45,854 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:45,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:45,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:45,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:45,855 INFO L87 Difference]: Start difference. First operand 180 states and 260 transitions. Second operand 3 states. [2019-12-07 13:08:45,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:45,945 INFO L93 Difference]: Finished difference Result 387 states and 565 transitions. [2019-12-07 13:08:45,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:45,945 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2019-12-07 13:08:45,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:45,946 INFO L225 Difference]: With dead ends: 387 [2019-12-07 13:08:45,946 INFO L226 Difference]: Without dead ends: 209 [2019-12-07 13:08:45,947 INFO L630 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 [2019-12-07 13:08:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-12-07 13:08:45,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2019-12-07 13:08:45,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2019-12-07 13:08:45,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 306 transitions. [2019-12-07 13:08:45,953 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 306 transitions. Word has length 38 [2019-12-07 13:08:45,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:45,953 INFO L462 AbstractCegarLoop]: Abstraction has 209 states and 306 transitions. [2019-12-07 13:08:45,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:45,953 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 306 transitions. [2019-12-07 13:08:45,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-12-07 13:08:45,954 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:45,954 INFO L410 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] [2019-12-07 13:08:45,954 INFO L410 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]=== [2019-12-07 13:08:45,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:45,954 INFO L82 PathProgramCache]: Analyzing trace with hash -2139332464, now seen corresponding path program 1 times [2019-12-07 13:08:45,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:45,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293416389] [2019-12-07 13:08:45,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:45,961 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 13:08:45,961 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535329491] [2019-12-07 13:08:45,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/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 [2019-12-07 13:08:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:46,004 INFO L264 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 13:08:46,008 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 13:08:46,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:46,023 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 13:08:46,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:46,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293416389] [2019-12-07 13:08:46,031 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 13:08:46,031 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535329491] [2019-12-07 13:08:46,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:46,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-12-07 13:08:46,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223979787] [2019-12-07 13:08:46,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 13:08:46,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:46,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 13:08:46,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:08:46,032 INFO L87 Difference]: Start difference. First operand 209 states and 306 transitions. Second operand 4 states. [2019-12-07 13:08:46,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:46,183 INFO L93 Difference]: Finished difference Result 515 states and 773 transitions. [2019-12-07 13:08:46,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 13:08:46,184 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-12-07 13:08:46,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:46,185 INFO L225 Difference]: With dead ends: 515 [2019-12-07 13:08:46,185 INFO L226 Difference]: Without dead ends: 308 [2019-12-07 13:08:46,186 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 13:08:46,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2019-12-07 13:08:46,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 292. [2019-12-07 13:08:46,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2019-12-07 13:08:46,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 410 transitions. [2019-12-07 13:08:46,194 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 410 transitions. Word has length 38 [2019-12-07 13:08:46,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:46,194 INFO L462 AbstractCegarLoop]: Abstraction has 292 states and 410 transitions. [2019-12-07 13:08:46,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 13:08:46,194 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 410 transitions. [2019-12-07 13:08:46,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-12-07 13:08:46,195 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:46,195 INFO L410 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] [2019-12-07 13:08:46,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:08:46,396 INFO L410 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]=== [2019-12-07 13:08:46,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:46,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1344498589, now seen corresponding path program 1 times [2019-12-07 13:08:46,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:46,398 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284032813] [2019-12-07 13:08:46,398 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:46,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 13:08:46,462 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284032813] [2019-12-07 13:08:46,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:46,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 13:08:46,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692445789] [2019-12-07 13:08:46,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:46,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:46,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:46,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:46,464 INFO L87 Difference]: Start difference. First operand 292 states and 410 transitions. Second operand 3 states. [2019-12-07 13:08:46,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:46,753 INFO L93 Difference]: Finished difference Result 380 states and 530 transitions. [2019-12-07 13:08:46,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:46,753 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-12-07 13:08:46,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:46,756 INFO L225 Difference]: With dead ends: 380 [2019-12-07 13:08:46,756 INFO L226 Difference]: Without dead ends: 349 [2019-12-07 13:08:46,757 INFO L630 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 [2019-12-07 13:08:46,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2019-12-07 13:08:46,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 349. [2019-12-07 13:08:46,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 349 states. [2019-12-07 13:08:46,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 496 transitions. [2019-12-07 13:08:46,770 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 496 transitions. Word has length 40 [2019-12-07 13:08:46,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:46,770 INFO L462 AbstractCegarLoop]: Abstraction has 349 states and 496 transitions. [2019-12-07 13:08:46,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:46,771 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 496 transitions. [2019-12-07 13:08:46,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-12-07 13:08:46,772 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:46,772 INFO L410 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] [2019-12-07 13:08:46,773 INFO L410 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]=== [2019-12-07 13:08:46,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:46,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1722858433, now seen corresponding path program 1 times [2019-12-07 13:08:46,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:46,773 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747933707] [2019-12-07 13:08:46,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:46,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 13:08:46,793 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 13:08:46,793 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747933707] [2019-12-07 13:08:46,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 13:08:46,793 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 13:08:46,793 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992316869] [2019-12-07 13:08:46,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 13:08:46,794 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 13:08:46,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 13:08:46,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 13:08:46,794 INFO L87 Difference]: Start difference. First operand 349 states and 496 transitions. Second operand 3 states. [2019-12-07 13:08:46,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 13:08:46,887 INFO L93 Difference]: Finished difference Result 717 states and 1021 transitions. [2019-12-07 13:08:46,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 13:08:46,887 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2019-12-07 13:08:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 13:08:46,890 INFO L225 Difference]: With dead ends: 717 [2019-12-07 13:08:46,890 INFO L226 Difference]: Without dead ends: 370 [2019-12-07 13:08:46,891 INFO L630 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 [2019-12-07 13:08:46,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2019-12-07 13:08:46,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2019-12-07 13:08:46,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 368 states. [2019-12-07 13:08:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 518 transitions. [2019-12-07 13:08:46,904 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 518 transitions. Word has length 59 [2019-12-07 13:08:46,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 13:08:46,904 INFO L462 AbstractCegarLoop]: Abstraction has 368 states and 518 transitions. [2019-12-07 13:08:46,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 13:08:46,904 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 518 transitions. [2019-12-07 13:08:46,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-12-07 13:08:46,905 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 13:08:46,905 INFO L410 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] [2019-12-07 13:08:46,906 INFO L410 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]=== [2019-12-07 13:08:46,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 13:08:46,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2007412819, now seen corresponding path program 1 times [2019-12-07 13:08:46,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 13:08:46,906 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740200525] [2019-12-07 13:08:46,906 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 13:08:46,915 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-12-07 13:08:46,915 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1983675139] [2019-12-07 13:08:46,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6be1654d-9460-4dc3-a491-be01a200e049/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 [2019-12-07 13:08:46,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:08:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 13:08:47,041 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 13:08:47,041 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 13:08:47,241 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 13:08:47,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 01:08:47 BoogieIcfgContainer [2019-12-07 13:08:47,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 13:08:47,279 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 13:08:47,279 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 13:08:47,279 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 13:08:47,280 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 01:08:44" (3/4) ... [2019-12-07 13:08:47,282 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 13:08:47,282 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 13:08:47,284 INFO L168 Benchmark]: Toolchain (without parser) took 3471.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 155.2 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -181.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:08:47,284 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:08:47,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -143.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-12-07 13:08:47,285 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:08:47,285 INFO L168 Benchmark]: Boogie Preprocessor took 25.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 13:08:47,285 INFO L168 Benchmark]: RCFGBuilder took 529.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.0 MB). Peak memory consumption was 82.0 MB. Max. memory is 11.5 GB. [2019-12-07 13:08:47,286 INFO L168 Benchmark]: TraceAbstraction took 2615.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 54.5 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -125.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:08:47,286 INFO L168 Benchmark]: Witness Printer took 3.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 13:08:47,288 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 960.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 257.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 100.7 MB). Free memory was 946.4 MB in the beginning and 1.1 GB in the end (delta: -143.5 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.71 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.36 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 529.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 82.0 MB). Peak memory consumption was 82.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2615.93 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 54.5 MB). Free memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: -125.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.09 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 543]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L687] int s ; [L688] int tmp ; [L692] s = 8464 [L12] int s__info_callback = __VERIFIER_nondet_int(); [L13] unsigned int s__in_handshake = __VERIFIER_nondet_uint(); [L14] int s__state ; [L15] int s__new_session ; [L16] int s__server ; [L17] int s__version = __VERIFIER_nondet_int(); [L18] int s__type ; [L19] int s__init_num ; [L20] int s__hit = __VERIFIER_nondet_int(); [L21] int s__rwstate ; [L22] int s__init_buf___0 ; [L23] int s__debug = __VERIFIER_nondet_int(); [L24] int s__shutdown ; [L25] int s__cert = __VERIFIER_nondet_int(); [L26] int s__options = __VERIFIER_nondet_int(); [L27] int s__verify_mode = __VERIFIER_nondet_int(); [L28] int s__session__peer = __VERIFIER_nondet_int(); [L29] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int(); [L30] int s__ctx__info_callback = __VERIFIER_nondet_int(); [L31] int s__ctx__stats__sess_accept_renegotiate ; [L32] int s__ctx__stats__sess_accept ; [L33] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int(); [L34] int s__s3__tmp__cert_request ; [L35] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int(); [L36] int s__s3__tmp__use_rsa_tmp ; [L37] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int(); [L38] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int(); [L39] int s__s3__tmp__next_state___0 ; [L40] int s__s3__tmp__new_cipher__algo_strength = __VERIFIER_nondet_int(); [L41] int s__session__cipher ; [L42] int buf = __VERIFIER_nondet_int(); [L43] unsigned long l ; [L44] unsigned long Time ; [L45] unsigned long tmp = __VERIFIER_nondet_ulong(); [L46] int cb ; [L47] long num1 ; [L48] int ret ; [L49] int new_state ; [L50] int state ; [L51] int skip ; [L52] int got_new_session ; [L53] int tmp___1 = __VERIFIER_nondet_int(); [L54] int tmp___2 = __VERIFIER_nondet_int(); [L55] int tmp___3 ; [L56] int tmp___4 ; [L57] int tmp___5 ; [L58] int tmp___6 ; [L59] int tmp___7 ; [L60] long tmp___8 = __VERIFIER_nondet_long(); [L61] int tmp___9 ; [L62] int tmp___10 ; [L63] int blastFlag ; [L64] int ag_X ; [L65] int ag_Y = __VERIFIER_nondet_int(); [L66] int ag_Z ; [L67] int __retres70 ; [L71] s__state = initial_state [L72] blastFlag = 0 [L73] Time = tmp [L74] cb = 0 [L75] ret = -1 [L76] skip = 0 [L77] got_new_session = 0 [L78] COND TRUE s__info_callback != 0 [L79] cb = s__info_callback [L87] s__in_handshake = s__in_handshake + 1 [L88] COND FALSE !(tmp___1 & 12288) [L97] COND FALSE !(s__cert == 0) [L104] COND TRUE 1 [L106] state = s__state [L107] COND FALSE !(s__state == 12292) [L110] COND FALSE !(s__state == 16384) [L113] COND FALSE !(s__state == 8192) [L116] COND FALSE !(s__state == 24576) [L119] COND FALSE !(s__state == 8195) [L122] COND FALSE !(s__state == 8480) [L125] COND FALSE !(s__state == 8481) [L128] COND FALSE !(s__state == 8482) [L131] COND TRUE s__state == 8464 [L289] s__shutdown = 0 [L290] ret = __VERIFIER_nondet_int() [L291] COND TRUE blastFlag == 0 [L292] blastFlag = 1 [L296] COND FALSE !(ret <= 0) [L301] got_new_session = 1 [L302] s__state = 8496 [L303] s__init_num = 0 [L636] COND FALSE !(! s__s3__tmp__reuse_message) [L665] skip = 0 [L104] COND TRUE 1 [L106] state = s__state [L107] COND FALSE !(s__state == 12292) [L110] COND FALSE !(s__state == 16384) [L113] COND FALSE !(s__state == 8192) [L116] COND FALSE !(s__state == 24576) [L119] COND FALSE !(s__state == 8195) [L122] COND FALSE !(s__state == 8480) [L125] COND FALSE !(s__state == 8481) [L128] COND FALSE !(s__state == 8482) [L131] COND FALSE !(s__state == 8464) [L134] COND FALSE !(s__state == 8465) [L137] COND FALSE !(s__state == 8466) [L140] COND TRUE s__state == 8496 [L307] ret = __VERIFIER_nondet_int() [L308] COND TRUE blastFlag == 1 [L309] blastFlag = 2 [L313] COND FALSE !(ret <= 0) [L318] COND TRUE \read(s__hit) [L319] s__state = 8656 [L323] s__init_num = 0 [L636] COND FALSE !(! s__s3__tmp__reuse_message) [L665] skip = 0 [L104] COND TRUE 1 [L106] state = s__state [L107] COND FALSE !(s__state == 12292) [L110] COND FALSE !(s__state == 16384) [L113] COND FALSE !(s__state == 8192) [L116] COND FALSE !(s__state == 24576) [L119] COND FALSE !(s__state == 8195) [L122] COND FALSE !(s__state == 8480) [L125] COND FALSE !(s__state == 8481) [L128] COND FALSE !(s__state == 8482) [L131] COND FALSE !(s__state == 8464) [L134] COND FALSE !(s__state == 8465) [L137] COND FALSE !(s__state == 8466) [L140] COND FALSE !(s__state == 8496) [L143] COND FALSE !(s__state == 8497) [L146] COND FALSE !(s__state == 8512) [L149] COND FALSE !(s__state == 8513) [L152] COND FALSE !(s__state == 8528) [L155] COND FALSE !(s__state == 8529) [L158] COND FALSE !(s__state == 8544) [L161] COND FALSE !(s__state == 8545) [L164] COND FALSE !(s__state == 8560) [L167] COND FALSE !(s__state == 8561) [L170] COND FALSE !(s__state == 8448) [L173] COND FALSE !(s__state == 8576) [L176] COND FALSE !(s__state == 8577) [L179] COND FALSE !(s__state == 8592) [L182] COND FALSE !(s__state == 8593) [L185] COND FALSE !(s__state == 8608) [L188] COND FALSE !(s__state == 8609) [L191] COND FALSE !(s__state == 8640) [L194] COND FALSE !(s__state == 8641) [L197] COND TRUE s__state == 8656 [L524] s__session__cipher = s__s3__tmp__new_cipher [L525] tmp___9 = __VERIFIER_nondet_int() [L526] COND FALSE !(! tmp___9) [L532] ret = __VERIFIER_nondet_int() [L533] COND TRUE blastFlag == 2 [L534] blastFlag = 3 [L538] COND FALSE !(ret <= 0) [L543] ag_X * ag_Y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 12 error locations. Result: UNSAFE, OverallTime: 2.5s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1332 SDtfs, 1395 SDslu, 335 SDs, 0 SdLazy, 1056 SolverSat, 381 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=368occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 78 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 323 ConstructedInterpolants, 0 QuantifiedInterpolants, 28572 SizeOfPredicates, 4 NumberOfNonLiveVariables, 111 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, 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...