./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-numeric/MultCommutative_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/termination-numeric/MultCommutative_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a7af5709195f6c1eec73f2559f8e654af4840835 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:09:02,182 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:09:02,184 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:09:02,196 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:09:02,197 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:09:02,198 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:09:02,200 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:09:02,202 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:09:02,204 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:09:02,205 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:09:02,206 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:09:02,206 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:09:02,207 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:09:02,208 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:09:02,210 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:09:02,211 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:09:02,212 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:09:02,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:09:02,216 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:09:02,218 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:09:02,219 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:09:02,221 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:09:02,224 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:09:02,224 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:09:02,224 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:09:02,226 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:09:02,228 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:09:02,228 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:09:02,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:09:02,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:09:02,231 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:09:02,233 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:09:02,233 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:09:02,233 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:09:02,234 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:09:02,236 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:09:02,236 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:09:02,253 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:09:02,253 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:09:02,254 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:09:02,254 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:09:02,255 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:09:02,255 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:09:02,255 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:09:02,255 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:09:02,257 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:09:02,257 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:09:02,257 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:09:02,257 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:09:02,257 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:09:02,257 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:09:02,258 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:09:02,258 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:09:02,258 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:09:02,258 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:09:02,258 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:09:02,260 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:09:02,260 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:09:02,260 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:09:02,260 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:09:02,261 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:09:02,261 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:09:02,261 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:09:02,261 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:09:02,261 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:09:02,262 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:09:02,263 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true 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 -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux 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 -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a7af5709195f6c1eec73f2559f8e654af4840835 [2018-11-28 23:09:02,301 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:09:02,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:09:02,318 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:09:02,320 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:09:02,321 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:09:02,321 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-numeric/MultCommutative_false-no-overflow.c [2018-11-28 23:09:02,393 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc2afa98/d95adef32d6645e9afb65af4c9a47ef9/FLAG3eb4f458d [2018-11-28 23:09:02,866 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:09:02,867 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-numeric/MultCommutative_false-no-overflow.c [2018-11-28 23:09:02,876 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc2afa98/d95adef32d6645e9afb65af4c9a47ef9/FLAG3eb4f458d [2018-11-28 23:09:03,212 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebc2afa98/d95adef32d6645e9afb65af4c9a47ef9 [2018-11-28 23:09:03,217 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:09:03,219 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:09:03,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:09:03,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:09:03,229 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:09:03,230 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,235 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256fbe3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03, skipping insertion in model container [2018-11-28 23:09:03,236 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,244 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:09:03,267 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:09:03,511 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:09:03,518 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:09:03,547 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:09:03,565 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:09:03,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03 WrapperNode [2018-11-28 23:09:03,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:09:03,567 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:09:03,567 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:09:03,567 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:09:03,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,595 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:09:03,596 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:09:03,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:09:03,597 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:09:03,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,610 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,622 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... [2018-11-28 23:09:03,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:09:03,628 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:09:03,628 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:09:03,628 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:09:03,629 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2018-11-28 23:09:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:09:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:09:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2018-11-28 23:09:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2018-11-28 23:09:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:09:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:09:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:09:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:09:04,205 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:09:04,205 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 23:09:04,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:09:04 BoogieIcfgContainer [2018-11-28 23:09:04,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:09:04,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:09:04,207 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:09:04,210 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:09:04,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:09:03" (1/3) ... [2018-11-28 23:09:04,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265adb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:09:04, skipping insertion in model container [2018-11-28 23:09:04,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:09:03" (2/3) ... [2018-11-28 23:09:04,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@265adb53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:09:04, skipping insertion in model container [2018-11-28 23:09:04,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:09:04" (3/3) ... [2018-11-28 23:09:04,214 INFO L112 eAbstractionObserver]: Analyzing ICFG MultCommutative_false-no-overflow.c [2018-11-28 23:09:04,225 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:09:04,234 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2018-11-28 23:09:04,250 INFO L257 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2018-11-28 23:09:04,286 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:09:04,287 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:09:04,287 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:09:04,287 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:09:04,287 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:09:04,287 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:09:04,287 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:09:04,288 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:09:04,288 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:09:04,309 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2018-11-28 23:09:04,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 23:09:04,315 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:04,317 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:04,319 INFO L423 AbstractCegarLoop]: === Iteration 1 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:04,325 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:04,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1930860990, now seen corresponding path program 1 times [2018-11-28 23:09:04,328 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:04,329 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:04,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:04,387 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:04,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:04,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:04,561 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:09:04,561 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:09:04,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:09:04,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:09:04,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:09:04,580 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 5 states. [2018-11-28 23:09:04,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:04,907 INFO L93 Difference]: Finished difference Result 85 states and 104 transitions. [2018-11-28 23:09:04,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:09:04,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 23:09:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:04,920 INFO L225 Difference]: With dead ends: 85 [2018-11-28 23:09:04,920 INFO L226 Difference]: Without dead ends: 46 [2018-11-28 23:09:04,924 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:09:04,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2018-11-28 23:09:04,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 41. [2018-11-28 23:09:04,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 23:09:04,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2018-11-28 23:09:04,971 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 11 [2018-11-28 23:09:04,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:04,972 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2018-11-28 23:09:04,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:09:04,972 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2018-11-28 23:09:04,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 23:09:04,973 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:04,973 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:04,974 INFO L423 AbstractCegarLoop]: === Iteration 2 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:04,974 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:04,974 INFO L82 PathProgramCache]: Analyzing trace with hash -272844401, now seen corresponding path program 1 times [2018-11-28 23:09:04,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:04,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:04,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:04,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:04,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:04,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:05,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:05,150 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:09:05,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:09:05,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:09:05,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:09:05,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:09:05,153 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 5 states. [2018-11-28 23:09:05,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:05,413 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2018-11-28 23:09:05,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:09:05,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-28 23:09:05,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:05,415 INFO L225 Difference]: With dead ends: 62 [2018-11-28 23:09:05,416 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 23:09:05,417 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:09:05,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 23:09:05,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 55. [2018-11-28 23:09:05,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 23:09:05,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2018-11-28 23:09:05,431 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 12 [2018-11-28 23:09:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:05,432 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2018-11-28 23:09:05,432 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:09:05,432 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2018-11-28 23:09:05,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 23:09:05,433 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:05,434 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:05,434 INFO L423 AbstractCegarLoop]: === Iteration 3 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:05,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:05,435 INFO L82 PathProgramCache]: Analyzing trace with hash 757868177, now seen corresponding path program 1 times [2018-11-28 23:09:05,436 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:05,436 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:05,437 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:05,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:05,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:05,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:05,567 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:05,568 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:09:05,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:09:05,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:09:05,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:09:05,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:09:05,569 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand 5 states. [2018-11-28 23:09:05,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:05,829 INFO L93 Difference]: Finished difference Result 80 states and 100 transitions. [2018-11-28 23:09:05,830 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:09:05,830 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-28 23:09:05,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:05,833 INFO L225 Difference]: With dead ends: 80 [2018-11-28 23:09:05,833 INFO L226 Difference]: Without dead ends: 79 [2018-11-28 23:09:05,834 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:09:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2018-11-28 23:09:05,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 70. [2018-11-28 23:09:05,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-11-28 23:09:05,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2018-11-28 23:09:05,851 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 17 [2018-11-28 23:09:05,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:05,852 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2018-11-28 23:09:05,852 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:09:05,852 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2018-11-28 23:09:05,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 23:09:05,854 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:05,854 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:05,854 INFO L423 AbstractCegarLoop]: === Iteration 4 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:05,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:05,856 INFO L82 PathProgramCache]: Analyzing trace with hash 809703757, now seen corresponding path program 1 times [2018-11-28 23:09:05,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:05,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:05,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:05,857 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:05,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:05,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:05,932 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:09:05,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:09:05,932 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:09:05,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:09:05,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:09:05,935 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 5 states. [2018-11-28 23:09:06,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:06,117 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2018-11-28 23:09:06,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:09:06,118 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2018-11-28 23:09:06,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:06,122 INFO L225 Difference]: With dead ends: 124 [2018-11-28 23:09:06,122 INFO L226 Difference]: Without dead ends: 88 [2018-11-28 23:09:06,123 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:09:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2018-11-28 23:09:06,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 79. [2018-11-28 23:09:06,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-28 23:09:06,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 100 transitions. [2018-11-28 23:09:06,141 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 100 transitions. Word has length 18 [2018-11-28 23:09:06,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:06,141 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 100 transitions. [2018-11-28 23:09:06,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:09:06,141 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 100 transitions. [2018-11-28 23:09:06,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 23:09:06,143 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:06,143 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:06,143 INFO L423 AbstractCegarLoop]: === Iteration 5 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:06,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:06,144 INFO L82 PathProgramCache]: Analyzing trace with hash -668980256, now seen corresponding path program 1 times [2018-11-28 23:09:06,144 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:06,144 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:06,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:06,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:06,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:06,379 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:06,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:09:06,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:09:06,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:09:06,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:09:06,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:09:06,381 INFO L87 Difference]: Start difference. First operand 79 states and 100 transitions. Second operand 5 states. [2018-11-28 23:09:06,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:06,638 INFO L93 Difference]: Finished difference Result 105 states and 134 transitions. [2018-11-28 23:09:06,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:09:06,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-28 23:09:06,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:06,640 INFO L225 Difference]: With dead ends: 105 [2018-11-28 23:09:06,640 INFO L226 Difference]: Without dead ends: 104 [2018-11-28 23:09:06,641 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:09:06,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2018-11-28 23:09:06,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2018-11-28 23:09:06,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 23:09:06,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 119 transitions. [2018-11-28 23:09:06,656 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 119 transitions. Word has length 19 [2018-11-28 23:09:06,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:06,656 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 119 transitions. [2018-11-28 23:09:06,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:09:06,657 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 119 transitions. [2018-11-28 23:09:06,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 23:09:06,658 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:06,658 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:06,658 INFO L423 AbstractCegarLoop]: === Iteration 6 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:06,658 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:06,659 INFO L82 PathProgramCache]: Analyzing trace with hash 2531206, now seen corresponding path program 1 times [2018-11-28 23:09:06,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:06,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:06,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:06,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:06,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:09:06,733 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:09:06,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:09:06,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:09:06,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:09:06,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:09:06,735 INFO L87 Difference]: Start difference. First operand 94 states and 119 transitions. Second operand 5 states. [2018-11-28 23:09:06,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:06,897 INFO L93 Difference]: Finished difference Result 136 states and 172 transitions. [2018-11-28 23:09:06,898 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:09:06,898 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2018-11-28 23:09:06,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:06,899 INFO L225 Difference]: With dead ends: 136 [2018-11-28 23:09:06,899 INFO L226 Difference]: Without dead ends: 62 [2018-11-28 23:09:06,902 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:09:06,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-28 23:09:06,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 54. [2018-11-28 23:09:06,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-28 23:09:06,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2018-11-28 23:09:06,914 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 22 [2018-11-28 23:09:06,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:06,914 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2018-11-28 23:09:06,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:09:06,914 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2018-11-28 23:09:06,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 23:09:06,915 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:06,915 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:06,919 INFO L423 AbstractCegarLoop]: === Iteration 7 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:06,919 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:06,920 INFO L82 PathProgramCache]: Analyzing trace with hash -484323025, now seen corresponding path program 1 times [2018-11-28 23:09:06,920 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:06,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:06,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:06,922 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:06,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:07,015 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:07,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:09:07,016 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:09:07,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:07,050 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:09:07,103 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:07,122 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:09:07,123 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2018-11-28 23:09:07,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 23:09:07,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:09:07,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:09:07,125 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 8 states. [2018-11-28 23:09:07,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:07,358 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2018-11-28 23:09:07,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 23:09:07,360 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-11-28 23:09:07,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:07,362 INFO L225 Difference]: With dead ends: 70 [2018-11-28 23:09:07,362 INFO L226 Difference]: Without dead ends: 69 [2018-11-28 23:09:07,364 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2018-11-28 23:09:07,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2018-11-28 23:09:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 60. [2018-11-28 23:09:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-28 23:09:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2018-11-28 23:09:07,377 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 21 [2018-11-28 23:09:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:07,378 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2018-11-28 23:09:07,378 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 23:09:07,378 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2018-11-28 23:09:07,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 23:09:07,379 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:07,379 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:07,379 INFO L423 AbstractCegarLoop]: === Iteration 8 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:07,380 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:07,380 INFO L82 PathProgramCache]: Analyzing trace with hash -2129111832, now seen corresponding path program 1 times [2018-11-28 23:09:07,380 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:07,380 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:07,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:07,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:07,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:07,516 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:07,516 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:09:07,516 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:09:07,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:07,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:09:07,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:09:07,601 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:09:07,601 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 23:09:07,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:09:07,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:09:07,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:09:07,602 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 7 states. [2018-11-28 23:09:07,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:07,832 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2018-11-28 23:09:07,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:09:07,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2018-11-28 23:09:07,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:07,836 INFO L225 Difference]: With dead ends: 62 [2018-11-28 23:09:07,836 INFO L226 Difference]: Without dead ends: 61 [2018-11-28 23:09:07,837 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:09:07,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-11-28 23:09:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2018-11-28 23:09:07,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2018-11-28 23:09:07,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 69 transitions. [2018-11-28 23:09:07,844 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 69 transitions. Word has length 22 [2018-11-28 23:09:07,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:07,845 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 69 transitions. [2018-11-28 23:09:07,845 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:09:07,845 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 69 transitions. [2018-11-28 23:09:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2018-11-28 23:09:07,846 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:07,846 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:07,847 INFO L423 AbstractCegarLoop]: === Iteration 9 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:07,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:07,847 INFO L82 PathProgramCache]: Analyzing trace with hash -1178899970, now seen corresponding path program 1 times [2018-11-28 23:09:07,847 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:07,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:07,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:07,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:07,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:07,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:07,953 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-28 23:09:07,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:09:07,953 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:09:07,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:07,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:07,985 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:09:08,256 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-28 23:09:08,276 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:09:08,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 12 [2018-11-28 23:09:08,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 23:09:08,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 23:09:08,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-11-28 23:09:08,277 INFO L87 Difference]: Start difference. First operand 60 states and 69 transitions. Second operand 13 states. [2018-11-28 23:09:09,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:09,053 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2018-11-28 23:09:09,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 23:09:09,054 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 28 [2018-11-28 23:09:09,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:09,055 INFO L225 Difference]: With dead ends: 97 [2018-11-28 23:09:09,056 INFO L226 Difference]: Without dead ends: 96 [2018-11-28 23:09:09,057 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2018-11-28 23:09:09,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2018-11-28 23:09:09,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2018-11-28 23:09:09,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2018-11-28 23:09:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 100 transitions. [2018-11-28 23:09:09,068 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 100 transitions. Word has length 28 [2018-11-28 23:09:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:09,068 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 100 transitions. [2018-11-28 23:09:09,068 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 23:09:09,068 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 100 transitions. [2018-11-28 23:09:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 23:09:09,071 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:09,071 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:09,072 INFO L423 AbstractCegarLoop]: === Iteration 10 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:09,072 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:09,072 INFO L82 PathProgramCache]: Analyzing trace with hash 2108806649, now seen corresponding path program 1 times [2018-11-28 23:09:09,072 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:09,072 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:09,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:09,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:09,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 23:09:09,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:09:09,177 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:09:09,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:09,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:09:09,228 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:09:09,346 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-28 23:09:09,375 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:09:09,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-28 23:09:09,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:09:09,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:09:09,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:09:09,376 INFO L87 Difference]: Start difference. First operand 87 states and 100 transitions. Second operand 7 states. [2018-11-28 23:09:09,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:09:09,507 INFO L93 Difference]: Finished difference Result 88 states and 100 transitions. [2018-11-28 23:09:09,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:09:09,508 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-11-28 23:09:09,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:09:09,510 INFO L225 Difference]: With dead ends: 88 [2018-11-28 23:09:09,510 INFO L226 Difference]: Without dead ends: 63 [2018-11-28 23:09:09,511 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:09:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2018-11-28 23:09:09,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2018-11-28 23:09:09,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2018-11-28 23:09:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 69 transitions. [2018-11-28 23:09:09,518 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 69 transitions. Word has length 29 [2018-11-28 23:09:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:09:09,518 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 69 transitions. [2018-11-28 23:09:09,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:09:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 69 transitions. [2018-11-28 23:09:09,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 23:09:09,521 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:09:09,521 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:09:09,522 INFO L423 AbstractCegarLoop]: === Iteration 11 === [multErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr4ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, multErr5ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:09:09,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:09:09,523 INFO L82 PathProgramCache]: Analyzing trace with hash -880204174, now seen corresponding path program 1 times [2018-11-28 23:09:09,523 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:09:09,523 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:09:09,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:09,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:09:09,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:09:09,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:09:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:09:09,582 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 23:09:09,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:09:09 BoogieIcfgContainer [2018-11-28 23:09:09,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:09:09,613 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:09:09,613 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:09:09,614 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:09:09,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:09:04" (3/4) ... [2018-11-28 23:09:09,616 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 23:09:09,673 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:09:09,673 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:09:09,675 INFO L168 Benchmark]: Toolchain (without parser) took 6457.46 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 951.3 MB in the beginning and 810.1 MB in the end (delta: 141.2 MB). Peak memory consumption was 256.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:09:09,676 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:09:09,677 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.32 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:09:09,678 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.12 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:09:09,678 INFO L168 Benchmark]: Boogie Preprocessor took 31.18 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:09:09,680 INFO L168 Benchmark]: RCFGBuilder took 577.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:09:09,681 INFO L168 Benchmark]: TraceAbstraction took 5406.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 816.9 MB in the end (delta: 269.0 MB). Peak memory consumption was 269.0 MB. Max. memory is 11.5 GB. [2018-11-28 23:09:09,681 INFO L168 Benchmark]: Witness Printer took 59.95 ms. Allocated memory is still 1.1 GB. Free memory was 816.9 MB in the beginning and 810.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:09:09,687 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 346.32 ms. Allocated memory is still 1.0 GB. Free memory was 951.3 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.12 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.18 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 577.89 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -145.3 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5406.07 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 816.9 MB in the end (delta: 269.0 MB). Peak memory consumption was 269.0 MB. Max. memory is 11.5 GB. * Witness Printer took 59.95 ms. Allocated memory is still 1.1 GB. Free memory was 816.9 MB in the beginning and 810.1 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 22]: integer overflow possible integer overflow possible We found a FailurePath: [L26] int m = __VERIFIER_nondet_int(); [L27] COND FALSE !(m < 0) [L30] int n = __VERIFIER_nondet_int(); [L31] COND FALSE !(n < 0) VAL [m=1073741824, n=2] [L34] CALL mult(m, n) VAL [\old(m)=2, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L19] COND FALSE !(m == 0) VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L22] EXPR m - 1 VAL [\old(m)=2, \old(n)=1073741824, m=2, n=1073741824] [L22] CALL, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L19] COND FALSE !(m == 0) VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L22] EXPR m - 1 VAL [\old(m)=1, \old(n)=1073741824, m=1, n=1073741824] [L22] CALL, EXPR mult(n, m - 1) VAL [\old(m)=0, \old(n)=1073741824] [L16] COND FALSE !(m < 0) VAL [\old(m)=0, \old(n)=1073741824, m=0, n=1073741824] [L19] COND TRUE m == 0 [L20] return 0; VAL [\old(m)=0, \old(n)=1073741824, \result=0, m=0, n=1073741824] [L22] RET, EXPR mult(n, m - 1) VAL [\old(m)=1, \old(n)=1073741824, m=1, mult(n, m - 1)=0, n=1073741824] [L22] EXPR n + mult(n, m - 1) [L22] return n + mult(n, m - 1); [L22] RET, EXPR mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] [L22] n + mult(n, m - 1) VAL [\old(m)=2, \old(n)=1073741824, m=2, mult(n, m - 1)=1073741824, n=1073741824] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 38 locations, 6 error locations. UNSAFE Result, 5.3s OverallTime, 11 OverallIterations, 3 TraceHistogramMax, 2.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 284 SDtfs, 310 SDslu, 749 SDs, 0 SdLazy, 604 SolverSat, 86 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=94occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 66 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 331 NumberOfCodeBlocks, 331 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 285 ConstructedInterpolants, 0 QuantifiedInterpolants, 13709 SizeOfPredicates, 5 NumberOfNonLiveVariables, 266 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 40/70 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...