./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/NestedRecursion_2c_true-no-overflow_true-termination_true-valid-memsafety.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-crafted/NestedRecursion_2c_true-no-overflow_true-termination_true-valid-memsafety.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 14df269faa4a77275028af94d8141ab36c184cf5 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:06:26,229 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:06:26,231 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:06:26,243 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:06:26,244 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:06:26,245 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:06:26,246 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:06:26,249 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:06:26,251 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:06:26,252 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:06:26,253 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:06:26,253 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:06:26,254 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:06:26,255 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:06:26,257 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:06:26,258 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:06:26,259 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:06:26,261 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:06:26,263 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:06:26,265 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:06:26,266 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:06:26,267 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:06:26,270 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:06:26,271 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:06:26,271 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:06:26,272 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:06:26,274 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:06:26,274 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:06:26,275 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:06:26,277 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:06:26,277 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:06:26,278 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:06:26,278 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:06:26,278 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:06:26,280 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:06:26,281 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:06:26,281 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:06:26,297 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:06:26,298 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:06:26,298 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:06:26,299 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:06:26,300 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:06:26,300 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:06:26,300 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:06:26,300 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:06:26,301 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:06:26,301 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:06:26,302 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:06:26,302 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:06:26,302 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:06:26,302 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:06:26,302 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:06:26,302 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:06:26,303 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:06:26,303 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:06:26,303 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:06:26,303 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:06:26,303 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:06:26,304 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:06:26,305 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:06:26,305 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:06:26,306 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:06:26,306 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:06:26,306 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:06:26,306 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:06:26,306 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:06:26,306 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 -> 14df269faa4a77275028af94d8141ab36c184cf5 [2018-11-28 23:06:26,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:06:26,357 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:06:26,361 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:06:26,363 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:06:26,363 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:06:26,364 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/NestedRecursion_2c_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:06:26,429 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4abb950f7/aff32c2150c74eb8907fa1520b74d463/FLAG52bf26ed9 [2018-11-28 23:06:26,891 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:06:26,892 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/NestedRecursion_2c_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:06:26,898 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4abb950f7/aff32c2150c74eb8907fa1520b74d463/FLAG52bf26ed9 [2018-11-28 23:06:27,280 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4abb950f7/aff32c2150c74eb8907fa1520b74d463 [2018-11-28 23:06:27,284 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:06:27,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:06:27,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:06:27,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:06:27,292 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:06:27,293 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59d9ca45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27, skipping insertion in model container [2018-11-28 23:06:27,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,304 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:06:27,323 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:06:27,507 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:06:27,511 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:06:27,527 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:06:27,538 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:06:27,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27 WrapperNode [2018-11-28 23:06:27,539 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:06:27,540 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:06:27,540 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:06:27,540 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:06:27,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,554 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:06:27,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:06:27,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:06:27,562 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:06:27,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,580 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,581 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (1/1) ... [2018-11-28 23:06:27,582 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:06:27,583 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:06:27,583 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:06:27,583 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:06:27,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (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 23:06:27,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:06:27,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:06:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure g [2018-11-28 23:06:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2018-11-28 23:06:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:06:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:06:27,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:06:27,711 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:06:27,984 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:06:27,985 INFO L280 CfgBuilder]: Removed 0 assue(true) statements. [2018-11-28 23:06:27,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:27 BoogieIcfgContainer [2018-11-28 23:06:27,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:06:27,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:06:27,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:06:27,990 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:06:27,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:06:27" (1/3) ... [2018-11-28 23:06:27,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feeb3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:06:27, skipping insertion in model container [2018-11-28 23:06:27,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:06:27" (2/3) ... [2018-11-28 23:06:27,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2feeb3e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:06:27, skipping insertion in model container [2018-11-28 23:06:27,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:27" (3/3) ... [2018-11-28 23:06:27,994 INFO L112 eAbstractionObserver]: Analyzing ICFG NestedRecursion_2c_true-no-overflow_true-termination_true-valid-memsafety.c [2018-11-28 23:06:28,006 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:06:28,014 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 23:06:28,033 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 23:06:28,067 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:06:28,068 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:06:28,068 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:06:28,069 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:06:28,069 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:06:28,069 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:06:28,069 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:06:28,069 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:06:28,069 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:06:28,092 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2018-11-28 23:06:28,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 23:06:28,098 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:28,099 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:28,102 INFO L423 AbstractCegarLoop]: === Iteration 1 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:28,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:28,109 INFO L82 PathProgramCache]: Analyzing trace with hash -774276160, now seen corresponding path program 1 times [2018-11-28 23:06:28,111 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:28,111 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:28,163 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:28,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:28,164 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:28,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:28,307 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 23:06:28,309 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:28,310 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:06:28,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:06:28,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:06:28,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:28,332 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 5 states. [2018-11-28 23:06:28,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:28,528 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-28 23:06:28,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:06:28,530 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2018-11-28 23:06:28,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:28,543 INFO L225 Difference]: With dead ends: 46 [2018-11-28 23:06:28,543 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 23:06:28,547 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 23:06:28,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 23:06:28,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 35. [2018-11-28 23:06:28,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 23:06:28,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2018-11-28 23:06:28,600 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 10 [2018-11-28 23:06:28,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:28,600 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2018-11-28 23:06:28,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:06:28,601 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2018-11-28 23:06:28,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-28 23:06:28,602 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:28,602 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:28,603 INFO L423 AbstractCegarLoop]: === Iteration 2 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:28,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:28,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1767242855, now seen corresponding path program 1 times [2018-11-28 23:06:28,603 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:28,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:28,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:28,605 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:28,605 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:28,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:28,763 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 23:06:28,764 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:28,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:06:28,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:06:28,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:06:28,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:28,768 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 5 states. [2018-11-28 23:06:29,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:29,082 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2018-11-28 23:06:29,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:06:29,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-28 23:06:29,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:29,084 INFO L225 Difference]: With dead ends: 54 [2018-11-28 23:06:29,085 INFO L226 Difference]: Without dead ends: 50 [2018-11-28 23:06:29,086 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 23:06:29,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-28 23:06:29,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2018-11-28 23:06:29,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 23:06:29,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 54 transitions. [2018-11-28 23:06:29,104 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 54 transitions. Word has length 11 [2018-11-28 23:06:29,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:29,105 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 54 transitions. [2018-11-28 23:06:29,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:06:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 54 transitions. [2018-11-28 23:06:29,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-28 23:06:29,106 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:29,106 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:29,106 INFO L423 AbstractCegarLoop]: === Iteration 3 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:29,106 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:29,107 INFO L82 PathProgramCache]: Analyzing trace with hash -601436741, now seen corresponding path program 1 times [2018-11-28 23:06:29,107 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:29,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:29,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:29,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:29,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:29,257 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:29,257 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 23:06:29,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:29,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:29,311 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:29,336 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:29,357 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:29,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 23:06:29,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:06:29,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:06:29,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:06:29,359 INFO L87 Difference]: Start difference. First operand 44 states and 54 transitions. Second operand 7 states. [2018-11-28 23:06:29,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:29,676 INFO L93 Difference]: Finished difference Result 67 states and 81 transitions. [2018-11-28 23:06:29,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:06:29,677 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2018-11-28 23:06:29,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:29,680 INFO L225 Difference]: With dead ends: 67 [2018-11-28 23:06:29,680 INFO L226 Difference]: Without dead ends: 66 [2018-11-28 23:06:29,682 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:06:29,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2018-11-28 23:06:29,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2018-11-28 23:06:29,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 23:06:29,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 70 transitions. [2018-11-28 23:06:29,707 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 70 transitions. Word has length 16 [2018-11-28 23:06:29,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:29,708 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 70 transitions. [2018-11-28 23:06:29,708 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:06:29,708 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 70 transitions. [2018-11-28 23:06:29,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-28 23:06:29,709 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:29,709 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 23:06:29,711 INFO L423 AbstractCegarLoop]: === Iteration 4 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:29,712 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:29,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1839303495, now seen corresponding path program 1 times [2018-11-28 23:06:29,712 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:29,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:29,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:29,715 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:29,715 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:29,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:29,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:29,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:06:29,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:06:29,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:06:29,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:06:29,768 INFO L87 Difference]: Start difference. First operand 56 states and 70 transitions. Second operand 3 states. [2018-11-28 23:06:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:29,794 INFO L93 Difference]: Finished difference Result 56 states and 70 transitions. [2018-11-28 23:06:29,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:06:29,796 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-28 23:06:29,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:29,799 INFO L225 Difference]: With dead ends: 56 [2018-11-28 23:06:29,800 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 23:06:29,800 INFO L631 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 [2018-11-28 23:06:29,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 23:06:29,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2018-11-28 23:06:29,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2018-11-28 23:06:29,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 66 transitions. [2018-11-28 23:06:29,814 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 66 transitions. Word has length 18 [2018-11-28 23:06:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:29,814 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 66 transitions. [2018-11-28 23:06:29,814 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:06:29,815 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 66 transitions. [2018-11-28 23:06:29,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 23:06:29,815 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:29,816 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:29,817 INFO L423 AbstractCegarLoop]: === Iteration 5 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:29,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:29,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1183833542, now seen corresponding path program 1 times [2018-11-28 23:06:29,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:29,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:29,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:29,820 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:29,820 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:29,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:29,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:06:29,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:06:29,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:06:29,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:06:29,908 INFO L87 Difference]: Start difference. First operand 55 states and 66 transitions. Second operand 4 states. [2018-11-28 23:06:29,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:29,981 INFO L93 Difference]: Finished difference Result 81 states and 105 transitions. [2018-11-28 23:06:29,988 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:06:29,988 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2018-11-28 23:06:29,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:29,991 INFO L225 Difference]: With dead ends: 81 [2018-11-28 23:06:29,991 INFO L226 Difference]: Without dead ends: 80 [2018-11-28 23:06:29,991 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:06:29,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-28 23:06:30,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 73. [2018-11-28 23:06:30,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-11-28 23:06:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 88 transitions. [2018-11-28 23:06:30,014 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 88 transitions. Word has length 19 [2018-11-28 23:06:30,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:30,015 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 88 transitions. [2018-11-28 23:06:30,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:06:30,015 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 88 transitions. [2018-11-28 23:06:30,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-28 23:06:30,017 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:30,017 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:30,017 INFO L423 AbstractCegarLoop]: === Iteration 6 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:30,017 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:30,018 INFO L82 PathProgramCache]: Analyzing trace with hash -544755481, now seen corresponding path program 2 times [2018-11-28 23:06:30,018 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:30,018 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:30,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:30,019 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:30,019 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:30,138 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:30,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:30,139 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 23:06:30,148 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:06:30,184 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:06:30,184 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:30,187 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:30,195 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:30,225 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:30,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 23:06:30,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:06:30,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:06:30,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:06:30,227 INFO L87 Difference]: Start difference. First operand 73 states and 88 transitions. Second operand 9 states. [2018-11-28 23:06:30,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:30,887 INFO L93 Difference]: Finished difference Result 94 states and 110 transitions. [2018-11-28 23:06:30,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 23:06:30,888 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2018-11-28 23:06:30,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:30,890 INFO L225 Difference]: With dead ends: 94 [2018-11-28 23:06:30,890 INFO L226 Difference]: Without dead ends: 93 [2018-11-28 23:06:30,891 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2018-11-28 23:06:30,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2018-11-28 23:06:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2018-11-28 23:06:30,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2018-11-28 23:06:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 109 transitions. [2018-11-28 23:06:30,905 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 109 transitions. Word has length 21 [2018-11-28 23:06:30,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:30,905 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 109 transitions. [2018-11-28 23:06:30,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:06:30,905 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 109 transitions. [2018-11-28 23:06:30,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-28 23:06:30,906 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:30,906 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:30,907 INFO L423 AbstractCegarLoop]: === Iteration 7 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:30,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:30,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1671679351, now seen corresponding path program 1 times [2018-11-28 23:06:30,908 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:30,908 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:30,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:30,909 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:30,909 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:31,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:31,037 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:31,037 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:06:31,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 23:06:31,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:06:31,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:06:31,039 INFO L87 Difference]: Start difference. First operand 90 states and 109 transitions. Second operand 6 states. [2018-11-28 23:06:31,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:31,298 INFO L93 Difference]: Finished difference Result 121 states and 153 transitions. [2018-11-28 23:06:31,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:06:31,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2018-11-28 23:06:31,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:31,301 INFO L225 Difference]: With dead ends: 121 [2018-11-28 23:06:31,301 INFO L226 Difference]: Without dead ends: 120 [2018-11-28 23:06:31,302 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:06:31,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2018-11-28 23:06:31,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 113. [2018-11-28 23:06:31,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-11-28 23:06:31,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 147 transitions. [2018-11-28 23:06:31,320 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 147 transitions. Word has length 23 [2018-11-28 23:06:31,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:31,321 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 147 transitions. [2018-11-28 23:06:31,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 23:06:31,321 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 147 transitions. [2018-11-28 23:06:31,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 23:06:31,322 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:31,322 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:31,323 INFO L423 AbstractCegarLoop]: === Iteration 8 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:31,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:31,323 INFO L82 PathProgramCache]: Analyzing trace with hash -282452290, now seen corresponding path program 1 times [2018-11-28 23:06:31,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:31,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:31,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:31,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:31,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:31,391 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:31,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:31,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-28 23:06:31,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 23:06:31,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:06:31,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:06:31,393 INFO L87 Difference]: Start difference. First operand 113 states and 147 transitions. Second operand 6 states. [2018-11-28 23:06:31,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:31,650 INFO L93 Difference]: Finished difference Result 139 states and 178 transitions. [2018-11-28 23:06:31,651 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:06:31,651 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-28 23:06:31,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:31,655 INFO L225 Difference]: With dead ends: 139 [2018-11-28 23:06:31,655 INFO L226 Difference]: Without dead ends: 138 [2018-11-28 23:06:31,656 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:06:31,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2018-11-28 23:06:31,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 129. [2018-11-28 23:06:31,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-11-28 23:06:31,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 164 transitions. [2018-11-28 23:06:31,676 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 164 transitions. Word has length 24 [2018-11-28 23:06:31,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:31,677 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 164 transitions. [2018-11-28 23:06:31,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 23:06:31,677 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 164 transitions. [2018-11-28 23:06:31,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-11-28 23:06:31,678 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:31,678 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:31,679 INFO L423 AbstractCegarLoop]: === Iteration 9 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:31,679 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:31,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1622021829, now seen corresponding path program 3 times [2018-11-28 23:06:31,679 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:31,679 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:31,680 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:31,680 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:31,681 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:31,908 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:31,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:31,908 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 23:06:31,918 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:06:31,930 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 23:06:31,931 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:31,933 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:31,945 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:31,967 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:31,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 23:06:31,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 23:06:31,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 23:06:31,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:06:31,968 INFO L87 Difference]: Start difference. First operand 129 states and 164 transitions. Second operand 11 states. [2018-11-28 23:06:32,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:32,247 INFO L93 Difference]: Finished difference Result 154 states and 196 transitions. [2018-11-28 23:06:32,247 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 23:06:32,247 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2018-11-28 23:06:32,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:32,249 INFO L225 Difference]: With dead ends: 154 [2018-11-28 23:06:32,250 INFO L226 Difference]: Without dead ends: 153 [2018-11-28 23:06:32,250 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-28 23:06:32,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2018-11-28 23:06:32,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 147. [2018-11-28 23:06:32,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2018-11-28 23:06:32,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 187 transitions. [2018-11-28 23:06:32,270 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 187 transitions. Word has length 26 [2018-11-28 23:06:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:32,270 INFO L480 AbstractCegarLoop]: Abstraction has 147 states and 187 transitions. [2018-11-28 23:06:32,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 23:06:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 187 transitions. [2018-11-28 23:06:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 23:06:32,272 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:32,272 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:32,272 INFO L423 AbstractCegarLoop]: === Iteration 10 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:32,273 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:32,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1947044292, now seen corresponding path program 2 times [2018-11-28 23:06:32,273 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:32,273 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:32,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:32,274 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:32,274 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:32,380 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:32,380 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:32,380 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 23:06:32,389 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:06:32,398 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:06:32,399 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:32,402 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:32,411 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:32,444 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:32,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 23:06:32,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 23:06:32,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:06:32,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:06:32,445 INFO L87 Difference]: Start difference. First operand 147 states and 187 transitions. Second operand 8 states. [2018-11-28 23:06:32,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:32,763 INFO L93 Difference]: Finished difference Result 178 states and 228 transitions. [2018-11-28 23:06:32,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 23:06:32,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2018-11-28 23:06:32,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:32,766 INFO L225 Difference]: With dead ends: 178 [2018-11-28 23:06:32,766 INFO L226 Difference]: Without dead ends: 177 [2018-11-28 23:06:32,767 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2018-11-28 23:06:32,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2018-11-28 23:06:32,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 165. [2018-11-28 23:06:32,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-11-28 23:06:32,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 210 transitions. [2018-11-28 23:06:32,788 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 210 transitions. Word has length 29 [2018-11-28 23:06:32,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:32,789 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 210 transitions. [2018-11-28 23:06:32,789 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 23:06:32,789 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 210 transitions. [2018-11-28 23:06:32,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-11-28 23:06:32,792 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:32,792 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:32,793 INFO L423 AbstractCegarLoop]: === Iteration 11 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:32,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:32,793 INFO L82 PathProgramCache]: Analyzing trace with hash 1283573095, now seen corresponding path program 4 times [2018-11-28 23:06:32,793 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:32,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:32,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:32,794 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:32,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:32,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:32,969 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:32,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:32,969 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:32,979 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:06:32,989 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:06:32,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:32,993 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2018-11-28 23:06:33,099 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:33,100 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 13 [2018-11-28 23:06:33,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 23:06:33,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 23:06:33,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-28 23:06:33,101 INFO L87 Difference]: Start difference. First operand 165 states and 210 transitions. Second operand 14 states. [2018-11-28 23:06:33,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:33,283 INFO L93 Difference]: Finished difference Result 169 states and 219 transitions. [2018-11-28 23:06:33,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:06:33,287 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2018-11-28 23:06:33,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:33,289 INFO L225 Difference]: With dead ends: 169 [2018-11-28 23:06:33,289 INFO L226 Difference]: Without dead ends: 168 [2018-11-28 23:06:33,290 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-28 23:06:33,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2018-11-28 23:06:33,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2018-11-28 23:06:33,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-11-28 23:06:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 209 transitions. [2018-11-28 23:06:33,307 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 209 transitions. Word has length 31 [2018-11-28 23:06:33,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:33,308 INFO L480 AbstractCegarLoop]: Abstraction has 165 states and 209 transitions. [2018-11-28 23:06:33,308 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 23:06:33,308 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 209 transitions. [2018-11-28 23:06:33,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 23:06:33,311 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:33,311 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:33,312 INFO L423 AbstractCegarLoop]: === Iteration 12 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:33,312 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:33,312 INFO L82 PathProgramCache]: Analyzing trace with hash 634524286, now seen corresponding path program 3 times [2018-11-28 23:06:33,312 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:33,312 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:33,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:33,313 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:33,313 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:33,497 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:33,497 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:33,520 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:06:33,561 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-28 23:06:33,561 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:33,564 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:33,571 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 20 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:33,598 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:33,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 23:06:33,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 23:06:33,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 23:06:33,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:06:33,600 INFO L87 Difference]: Start difference. First operand 165 states and 209 transitions. Second operand 10 states. [2018-11-28 23:06:34,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:34,183 INFO L93 Difference]: Finished difference Result 198 states and 252 transitions. [2018-11-28 23:06:34,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 23:06:34,184 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2018-11-28 23:06:34,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:34,186 INFO L225 Difference]: With dead ends: 198 [2018-11-28 23:06:34,191 INFO L226 Difference]: Without dead ends: 197 [2018-11-28 23:06:34,192 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2018-11-28 23:06:34,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2018-11-28 23:06:34,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 183. [2018-11-28 23:06:34,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2018-11-28 23:06:34,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 232 transitions. [2018-11-28 23:06:34,212 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 232 transitions. Word has length 34 [2018-11-28 23:06:34,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:34,213 INFO L480 AbstractCegarLoop]: Abstraction has 183 states and 232 transitions. [2018-11-28 23:06:34,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 23:06:34,213 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 232 transitions. [2018-11-28 23:06:34,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2018-11-28 23:06:34,223 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:34,223 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:34,223 INFO L423 AbstractCegarLoop]: === Iteration 13 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:34,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:34,224 INFO L82 PathProgramCache]: Analyzing trace with hash 1824264805, now seen corresponding path program 1 times [2018-11-28 23:06:34,224 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:34,224 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:34,227 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:34,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:34,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:34,352 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:34,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:06:34,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:06:34,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:06:34,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:34,353 INFO L87 Difference]: Start difference. First operand 183 states and 232 transitions. Second operand 5 states. [2018-11-28 23:06:34,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:34,420 INFO L93 Difference]: Finished difference Result 183 states and 232 transitions. [2018-11-28 23:06:34,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:06:34,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2018-11-28 23:06:34,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:34,425 INFO L225 Difference]: With dead ends: 183 [2018-11-28 23:06:34,427 INFO L226 Difference]: Without dead ends: 182 [2018-11-28 23:06:34,427 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 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 23:06:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2018-11-28 23:06:34,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2018-11-28 23:06:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-11-28 23:06:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 222 transitions. [2018-11-28 23:06:34,453 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 222 transitions. Word has length 35 [2018-11-28 23:06:34,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:34,454 INFO L480 AbstractCegarLoop]: Abstraction has 182 states and 222 transitions. [2018-11-28 23:06:34,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:06:34,454 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 222 transitions. [2018-11-28 23:06:34,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 23:06:34,462 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:34,462 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:34,463 INFO L423 AbstractCegarLoop]: === Iteration 14 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:34,463 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:34,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1057484292, now seen corresponding path program 4 times [2018-11-28 23:06:34,464 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:34,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:34,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:34,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:34,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:34,985 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 27 proven. 27 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-28 23:06:34,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:34,986 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:34,996 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:06:35,021 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:06:35,021 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:35,024 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-28 23:06:35,086 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 23:06:35,086 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 16 [2018-11-28 23:06:35,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 23:06:35,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 23:06:35,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2018-11-28 23:06:35,089 INFO L87 Difference]: Start difference. First operand 182 states and 222 transitions. Second operand 16 states. [2018-11-28 23:06:35,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:35,237 INFO L93 Difference]: Finished difference Result 243 states and 307 transitions. [2018-11-28 23:06:35,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:06:35,240 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2018-11-28 23:06:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:35,241 INFO L225 Difference]: With dead ends: 243 [2018-11-28 23:06:35,241 INFO L226 Difference]: Without dead ends: 115 [2018-11-28 23:06:35,245 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2018-11-28 23:06:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2018-11-28 23:06:35,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 110. [2018-11-28 23:06:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2018-11-28 23:06:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2018-11-28 23:06:35,257 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 39 [2018-11-28 23:06:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:35,257 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2018-11-28 23:06:35,257 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 23:06:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2018-11-28 23:06:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 23:06:35,260 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:35,261 INFO L402 BasicCegarLoop]: trace histogram [5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:35,261 INFO L423 AbstractCegarLoop]: === Iteration 15 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:35,261 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:35,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1307639896, now seen corresponding path program 1 times [2018-11-28 23:06:35,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:35,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:35,264 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:35,265 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:35,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:35,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:35,513 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-28 23:06:35,513 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:35,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 23:06:35,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:06:35,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:06:35,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:06:35,514 INFO L87 Difference]: Start difference. First operand 110 states and 130 transitions. Second operand 5 states. [2018-11-28 23:06:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:35,669 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2018-11-28 23:06:35,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:06:35,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2018-11-28 23:06:35,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:35,679 INFO L225 Difference]: With dead ends: 110 [2018-11-28 23:06:35,680 INFO L226 Difference]: Without dead ends: 109 [2018-11-28 23:06:35,680 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:06:35,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-11-28 23:06:35,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2018-11-28 23:06:35,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-11-28 23:06:35,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 129 transitions. [2018-11-28 23:06:35,692 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 129 transitions. Word has length 39 [2018-11-28 23:06:35,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:35,692 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 129 transitions. [2018-11-28 23:06:35,694 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:06:35,694 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 129 transitions. [2018-11-28 23:06:35,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-28 23:06:35,695 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:35,695 INFO L402 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:35,696 INFO L423 AbstractCegarLoop]: === Iteration 16 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:35,696 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:35,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1882131073, now seen corresponding path program 1 times [2018-11-28 23:06:35,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:35,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:35,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:35,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:35,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:35,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:35,791 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:35,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:06:35,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-28 23:06:35,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:06:35,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:06:35,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:06:35,793 INFO L87 Difference]: Start difference. First operand 109 states and 129 transitions. Second operand 7 states. [2018-11-28 23:06:36,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:36,161 INFO L93 Difference]: Finished difference Result 128 states and 152 transitions. [2018-11-28 23:06:36,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 23:06:36,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2018-11-28 23:06:36,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:36,163 INFO L225 Difference]: With dead ends: 128 [2018-11-28 23:06:36,163 INFO L226 Difference]: Without dead ends: 127 [2018-11-28 23:06:36,164 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2018-11-28 23:06:36,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2018-11-28 23:06:36,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 125. [2018-11-28 23:06:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2018-11-28 23:06:36,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 144 transitions. [2018-11-28 23:06:36,174 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 144 transitions. Word has length 40 [2018-11-28 23:06:36,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:36,176 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 144 transitions. [2018-11-28 23:06:36,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:06:36,176 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 144 transitions. [2018-11-28 23:06:36,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-28 23:06:36,177 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:36,177 INFO L402 BasicCegarLoop]: trace histogram [6, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:36,177 INFO L423 AbstractCegarLoop]: === Iteration 17 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:36,177 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:36,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1047280733, now seen corresponding path program 2 times [2018-11-28 23:06:36,180 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:36,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:36,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:36,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:36,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:36,313 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:36,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:36,314 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:36,323 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:06:36,337 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:06:36,337 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:36,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 34 proven. 4 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:36,377 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:36,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 23:06:36,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:06:36,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:06:36,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:06:36,379 INFO L87 Difference]: Start difference. First operand 125 states and 144 transitions. Second operand 9 states. [2018-11-28 23:06:36,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:36,641 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2018-11-28 23:06:36,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 23:06:36,642 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2018-11-28 23:06:36,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:36,644 INFO L225 Difference]: With dead ends: 144 [2018-11-28 23:06:36,644 INFO L226 Difference]: Without dead ends: 143 [2018-11-28 23:06:36,644 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2018-11-28 23:06:36,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2018-11-28 23:06:36,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2018-11-28 23:06:36,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2018-11-28 23:06:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 165 transitions. [2018-11-28 23:06:36,655 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 165 transitions. Word has length 45 [2018-11-28 23:06:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:36,656 INFO L480 AbstractCegarLoop]: Abstraction has 143 states and 165 transitions. [2018-11-28 23:06:36,657 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:06:36,657 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 165 transitions. [2018-11-28 23:06:36,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-11-28 23:06:36,658 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:36,658 INFO L402 BasicCegarLoop]: trace histogram [7, 5, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:36,658 INFO L423 AbstractCegarLoop]: === Iteration 18 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:36,659 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:36,659 INFO L82 PathProgramCache]: Analyzing trace with hash 483404799, now seen corresponding path program 3 times [2018-11-28 23:06:36,659 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:36,659 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:36,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:36,660 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:36,660 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:36,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:36,777 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:36,777 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:36,787 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:06:36,802 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-28 23:06:36,802 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:36,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:36,816 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 48 proven. 13 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:36,835 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:36,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 23:06:36,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 23:06:36,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 23:06:36,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:06:36,837 INFO L87 Difference]: Start difference. First operand 143 states and 165 transitions. Second operand 11 states. [2018-11-28 23:06:37,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:37,360 INFO L93 Difference]: Finished difference Result 162 states and 187 transitions. [2018-11-28 23:06:37,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-28 23:06:37,364 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 50 [2018-11-28 23:06:37,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:37,366 INFO L225 Difference]: With dead ends: 162 [2018-11-28 23:06:37,366 INFO L226 Difference]: Without dead ends: 161 [2018-11-28 23:06:37,368 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=185, Invalid=517, Unknown=0, NotChecked=0, Total=702 [2018-11-28 23:06:37,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2018-11-28 23:06:37,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2018-11-28 23:06:37,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2018-11-28 23:06:37,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 186 transitions. [2018-11-28 23:06:37,381 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 186 transitions. Word has length 50 [2018-11-28 23:06:37,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:37,381 INFO L480 AbstractCegarLoop]: Abstraction has 161 states and 186 transitions. [2018-11-28 23:06:37,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 23:06:37,381 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 186 transitions. [2018-11-28 23:06:37,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-11-28 23:06:37,382 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:37,382 INFO L402 BasicCegarLoop]: trace histogram [8, 6, 6, 5, 5, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:37,385 INFO L423 AbstractCegarLoop]: === Iteration 19 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:37,385 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:37,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2081594659, now seen corresponding path program 4 times [2018-11-28 23:06:37,385 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:37,386 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:37,387 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:37,388 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:37,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:37,747 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:37,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:37,748 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:37,763 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:06:37,805 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:06:37,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:37,808 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:37,822 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 27 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:37,851 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:37,851 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 23:06:37,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 23:06:37,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 23:06:37,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-11-28 23:06:37,853 INFO L87 Difference]: Start difference. First operand 161 states and 186 transitions. Second operand 13 states. [2018-11-28 23:06:38,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:38,646 INFO L93 Difference]: Finished difference Result 180 states and 208 transitions. [2018-11-28 23:06:38,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-28 23:06:38,648 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2018-11-28 23:06:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:38,651 INFO L225 Difference]: With dead ends: 180 [2018-11-28 23:06:38,651 INFO L226 Difference]: Without dead ends: 179 [2018-11-28 23:06:38,653 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=291, Invalid=831, Unknown=0, NotChecked=0, Total=1122 [2018-11-28 23:06:38,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2018-11-28 23:06:38,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2018-11-28 23:06:38,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2018-11-28 23:06:38,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 207 transitions. [2018-11-28 23:06:38,665 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 207 transitions. Word has length 55 [2018-11-28 23:06:38,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:38,667 INFO L480 AbstractCegarLoop]: Abstraction has 179 states and 207 transitions. [2018-11-28 23:06:38,667 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 23:06:38,667 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 207 transitions. [2018-11-28 23:06:38,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-28 23:06:38,670 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:38,670 INFO L402 BasicCegarLoop]: trace histogram [9, 7, 7, 6, 6, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:38,670 INFO L423 AbstractCegarLoop]: === Iteration 20 === [gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:38,671 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:38,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1729970815, now seen corresponding path program 5 times [2018-11-28 23:06:38,671 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:38,671 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:38,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:38,674 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:38,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:39,029 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 76 proven. 46 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-28 23:06:39,029 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:39,030 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:39,039 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:06:39,050 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2018-11-28 23:06:39,050 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:39,053 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:39,131 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-11-28 23:06:39,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 23:06:39,153 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 20 [2018-11-28 23:06:39,153 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 23:06:39,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 23:06:39,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-11-28 23:06:39,154 INFO L87 Difference]: Start difference. First operand 179 states and 207 transitions. Second operand 20 states. [2018-11-28 23:06:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:39,256 INFO L93 Difference]: Finished difference Result 219 states and 255 transitions. [2018-11-28 23:06:39,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:06:39,261 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60 [2018-11-28 23:06:39,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:39,262 INFO L225 Difference]: With dead ends: 219 [2018-11-28 23:06:39,262 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 23:06:39,263 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=434, Unknown=0, NotChecked=0, Total=552 [2018-11-28 23:06:39,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 23:06:39,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 23:06:39,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 23:06:39,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:06:39,264 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 60 [2018-11-28 23:06:39,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:39,264 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:06:39,264 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 23:06:39,264 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:06:39,264 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 23:06:39,269 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 23:06:39,336 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 23:06:39,346 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 23:06:39,352 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 23:06:39,366 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 23:06:39,375 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 23:06:39,384 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-11-28 23:06:39,975 WARN L180 SmtUtils]: Spent 495.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 20 [2018-11-28 23:06:40,223 WARN L180 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 17 [2018-11-28 23:06:40,226 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 23:06:40,226 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:06:40,226 INFO L448 ceAbstractionStarter]: For program point gErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,226 INFO L448 ceAbstractionStarter]: For program point gErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,226 INFO L448 ceAbstractionStarter]: For program point gFINAL(lines 10 16) no Hoare annotation was computed. [2018-11-28 23:06:40,226 INFO L448 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,226 INFO L448 ceAbstractionStarter]: For program point L15-1(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,227 INFO L448 ceAbstractionStarter]: For program point gErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,227 INFO L448 ceAbstractionStarter]: For program point gErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,227 INFO L444 ceAbstractionStarter]: At program point L15-2(line 15) the Hoare annotation is: (and (or (and (<= 0 g_~x) (<= g_~x 2147483647) (not (= 0 g_~x))) (< |g_#in~x| 0) (< 2147483647 |g_#in~x|)) (not (= |g_#in~x| 0))) [2018-11-28 23:06:40,227 INFO L448 ceAbstractionStarter]: For program point L12(lines 12 15) no Hoare annotation was computed. [2018-11-28 23:06:40,227 INFO L448 ceAbstractionStarter]: For program point L15-3(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,227 INFO L448 ceAbstractionStarter]: For program point L15-4(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,227 INFO L448 ceAbstractionStarter]: For program point L15-5(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,228 INFO L444 ceAbstractionStarter]: At program point L15-6(line 15) the Hoare annotation is: (and (not (= |g_#in~x| 0)) (or (and (<= 0 g_~x) (= 1 |g_#t~ret0|) (<= g_~x 2147483647) (not (= 0 g_~x))) (< |g_#in~x| 0) (< 2147483647 |g_#in~x|))) [2018-11-28 23:06:40,228 INFO L448 ceAbstractionStarter]: For program point gEXIT(lines 10 16) no Hoare annotation was computed. [2018-11-28 23:06:40,228 INFO L448 ceAbstractionStarter]: For program point L15-7(line 15) no Hoare annotation was computed. [2018-11-28 23:06:40,228 INFO L451 ceAbstractionStarter]: At program point gENTRY(lines 10 16) the Hoare annotation is: true [2018-11-28 23:06:40,228 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:06:40,228 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 23:06:40,228 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 23:06:40,228 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 23:06:40,228 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 18 22) the Hoare annotation is: true [2018-11-28 23:06:40,228 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 18 22) no Hoare annotation was computed. [2018-11-28 23:06:40,228 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 18 22) no Hoare annotation was computed. [2018-11-28 23:06:40,229 INFO L444 ceAbstractionStarter]: At program point L21(line 21) the Hoare annotation is: (and (<= main_~x~0 2147483647) (<= 0 main_~x~0)) [2018-11-28 23:06:40,229 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-28 23:06:40,229 INFO L448 ceAbstractionStarter]: For program point L21-1(line 21) no Hoare annotation was computed. [2018-11-28 23:06:40,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:06:40 BoogieIcfgContainer [2018-11-28 23:06:40,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:06:40,233 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:06:40,233 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:06:40,233 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:06:40,234 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:06:27" (3/4) ... [2018-11-28 23:06:40,238 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 23:06:40,244 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 23:06:40,245 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure g [2018-11-28 23:06:40,245 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 23:06:40,250 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-11-28 23:06:40,250 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-11-28 23:06:40,250 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 23:06:40,307 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:06:40,308 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:06:40,308 INFO L168 Benchmark]: Toolchain (without parser) took 13023.44 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 273.2 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -157.3 MB). Peak memory consumption was 115.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:40,309 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:40,310 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.98 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:40,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.72 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:40,311 INFO L168 Benchmark]: Boogie Preprocessor took 20.30 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:40,311 INFO L168 Benchmark]: RCFGBuilder took 402.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:40,312 INFO L168 Benchmark]: TraceAbstraction took 12246.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.5 MB). Peak memory consumption was 139.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:40,312 INFO L168 Benchmark]: Witness Printer took 74.92 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:40,318 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 251.98 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 21.72 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.30 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 402.63 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 137.9 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -181.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12246.07 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 135.3 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 4.5 MB). Peak memory consumption was 139.7 MB. Max. memory is 11.5 GB. * Witness Printer took 74.92 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 8.6 MB). Peak memory consumption was 8.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 15]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 4 error locations. SAFE Result, 12.1s OverallTime, 20 OverallIterations, 9 TraceHistogramMax, 6.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.9s HoareAnnotationTime, HoareTripleCheckerStatistics: 461 SDtfs, 662 SDslu, 1992 SDs, 0 SdLazy, 1550 SolverSat, 348 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 671 GetRequests, 425 SyntacticMatches, 4 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 654 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=12, 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: 0.3s AutomataMinimizationTime, 20 MinimizatonAttempts, 89 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 173 PreInvPairs, 191 NumberOfFragments, 65 HoareAnnotationTreeSize, 173 FomulaSimplifications, 631 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 401 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1031 NumberOfCodeBlocks, 986 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 1000 ConstructedInterpolants, 0 QuantifiedInterpolants, 89882 SizeOfPredicates, 30 NumberOfNonLiveVariables, 736 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 31 InterpolantComputations, 11 PerfectInterpolantSequences, 934/1271 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...