./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted/NonTermination4_false-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 91b1670e Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/svcomp/c/termination-crafted/NonTermination4_false-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 94b61e96441ca10668b436b4ef10dfd9464f0863 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:05:50,659 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:05:50,661 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:05:50,674 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:05:50,674 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:05:50,675 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:05:50,677 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:05:50,679 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:05:50,682 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:05:50,683 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:05:50,684 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:05:50,684 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:05:50,686 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:05:50,687 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:05:50,689 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:05:50,689 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:05:50,691 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:05:50,693 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:05:50,695 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:05:50,697 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:05:50,699 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:05:50,700 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:05:50,703 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:05:50,704 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:05:50,704 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:05:50,705 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:05:50,707 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:05:50,708 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:05:50,708 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:05:50,710 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:05:50,710 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:05:50,711 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:05:50,711 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:05:50,711 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:05:50,713 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:05:50,714 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:05:50,715 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:05:50,741 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:05:50,741 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:05:50,742 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:05:50,742 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:05:50,742 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:05:50,744 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:05:50,744 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:05:50,744 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:05:50,744 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:05:50,744 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:05:50,744 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:05:50,745 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:05:50,745 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:05:50,745 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:05:50,745 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:05:50,745 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:05:50,745 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:05:50,746 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:05:50,748 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:05:50,748 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:05:50,748 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:05:50,748 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:05:50,749 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:05:50,749 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:05:50,749 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:05:50,749 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:05:50,749 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:05:50,749 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:05:50,750 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:05:50,750 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 -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2018-11-28 23:05:50,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:05:50,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:05:50,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:05:50,807 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:05:50,808 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:05:50,809 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/NonTermination4_false-no-overflow.c [2018-11-28 23:05:50,864 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2008256ba/e924d082158a465aa253e5940208f242/FLAG7a04a4bfb [2018-11-28 23:05:51,333 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:05:51,334 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/NonTermination4_false-no-overflow.c [2018-11-28 23:05:51,343 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2008256ba/e924d082158a465aa253e5940208f242/FLAG7a04a4bfb [2018-11-28 23:05:51,675 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2008256ba/e924d082158a465aa253e5940208f242 [2018-11-28 23:05:51,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:05:51,680 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:05:51,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:05:51,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:05:51,688 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:05:51,689 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71aa32a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51, skipping insertion in model container [2018-11-28 23:05:51,693 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:05:51,719 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:05:51,921 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:05:51,926 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:05:51,940 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:05:51,953 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:05:51,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51 WrapperNode [2018-11-28 23:05:51,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:05:51,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:05:51,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:05:51,956 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:05:51,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,976 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:05:51,977 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:05:51,977 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:05:51,977 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:05:51,988 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:51,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:52,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:52,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (1/1) ... [2018-11-28 23:05:52,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:05:52,005 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:05:52,005 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:05:52,005 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:05:52,006 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (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 23:05:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:05:52,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:05:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:05:52,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:05:52,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:05:52,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:05:52,332 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:05:52,332 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 23:05:52,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:05:52 BoogieIcfgContainer [2018-11-28 23:05:52,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:05:52,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:05:52,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:05:52,337 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:05:52,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:05:51" (1/3) ... [2018-11-28 23:05:52,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73161f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:05:52, skipping insertion in model container [2018-11-28 23:05:52,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:05:51" (2/3) ... [2018-11-28 23:05:52,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73161f37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:05:52, skipping insertion in model container [2018-11-28 23:05:52,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:05:52" (3/3) ... [2018-11-28 23:05:52,342 INFO L112 eAbstractionObserver]: Analyzing ICFG NonTermination4_false-no-overflow.c [2018-11-28 23:05:52,351 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:05:52,358 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 23:05:52,373 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 23:05:52,406 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:05:52,407 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:05:52,407 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:05:52,407 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:05:52,408 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:05:52,408 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:05:52,408 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:05:52,408 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:05:52,408 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:05:52,427 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 23:05:52,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 23:05:52,433 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:52,434 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:52,437 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:52,443 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:52,443 INFO L82 PathProgramCache]: Analyzing trace with hash -37667266, now seen corresponding path program 1 times [2018-11-28 23:05:52,446 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:52,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:52,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:52,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:52,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:52,633 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 23:05:52,636 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:05:52,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:05:52,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:05:52,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:05:52,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:05:52,681 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-11-28 23:05:52,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:52,807 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2018-11-28 23:05:52,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:05:52,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 23:05:52,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:52,821 INFO L225 Difference]: With dead ends: 28 [2018-11-28 23:05:52,821 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 23:05:52,824 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 23:05:52,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 23:05:52,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-11-28 23:05:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 23:05:52,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-28 23:05:52,868 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2018-11-28 23:05:52,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:52,869 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-28 23:05:52,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:05:52,870 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-28 23:05:52,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 23:05:52,871 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:52,871 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:52,871 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:52,872 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:52,872 INFO L82 PathProgramCache]: Analyzing trace with hash -1167685199, now seen corresponding path program 1 times [2018-11-28 23:05:52,872 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:52,872 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:52,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:52,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:52,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:52,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:52,943 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 23:05:52,943 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:05:52,943 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:05:52,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:05:52,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:05:52,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:05:52,947 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 3 states. [2018-11-28 23:05:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:53,019 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-28 23:05:53,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:05:53,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-11-28 23:05:53,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:53,021 INFO L225 Difference]: With dead ends: 16 [2018-11-28 23:05:53,021 INFO L226 Difference]: Without dead ends: 15 [2018-11-28 23:05:53,023 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 23:05:53,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-28 23:05:53,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-28 23:05:53,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-28 23:05:53,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-11-28 23:05:53,028 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2018-11-28 23:05:53,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:53,028 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-11-28 23:05:53,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:05:53,028 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-11-28 23:05:53,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2018-11-28 23:05:53,029 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:53,029 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:53,029 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:53,031 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:53,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1838502752, now seen corresponding path program 1 times [2018-11-28 23:05:53,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:53,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:53,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:53,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:53,104 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 23:05:53,105 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:05:53,105 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:05:53,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:05:53,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:05:53,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:05:53,106 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 3 states. [2018-11-28 23:05:53,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:53,207 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2018-11-28 23:05:53,207 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:05:53,208 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2018-11-28 23:05:53,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:53,209 INFO L225 Difference]: With dead ends: 19 [2018-11-28 23:05:53,209 INFO L226 Difference]: Without dead ends: 18 [2018-11-28 23:05:53,210 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 23:05:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-11-28 23:05:53,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2018-11-28 23:05:53,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 23:05:53,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-28 23:05:53,215 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 9 [2018-11-28 23:05:53,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:53,216 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-28 23:05:53,216 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:05:53,216 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-28 23:05:53,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 23:05:53,217 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:53,218 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:53,218 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:53,219 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:53,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1159010413, now seen corresponding path program 1 times [2018-11-28 23:05:53,219 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:53,219 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:53,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,222 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:53,222 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:53,280 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 23:05:53,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:05:53,281 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:05:53,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:05:53,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:05:53,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:05:53,283 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 3 states. [2018-11-28 23:05:53,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:53,317 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2018-11-28 23:05:53,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:05:53,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 23:05:53,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:53,319 INFO L225 Difference]: With dead ends: 17 [2018-11-28 23:05:53,319 INFO L226 Difference]: Without dead ends: 16 [2018-11-28 23:05:53,320 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 23:05:53,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-28 23:05:53,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-28 23:05:53,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 23:05:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-28 23:05:53,329 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 10 [2018-11-28 23:05:53,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:53,330 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-28 23:05:53,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:05:53,330 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-28 23:05:53,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 23:05:53,331 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:53,331 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:53,331 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:53,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:53,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1412475851, now seen corresponding path program 1 times [2018-11-28 23:05:53,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:53,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:53,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:53,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:53,409 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:53,410 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:53,410 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 23:05:53,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:53,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:53,478 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:53,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:53,549 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:53,550 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 23:05:53,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:05:53,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:05:53,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:05:53,551 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2018-11-28 23:05:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:53,641 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-28 23:05:53,642 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:05:53,642 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2018-11-28 23:05:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:53,643 INFO L225 Difference]: With dead ends: 21 [2018-11-28 23:05:53,643 INFO L226 Difference]: Without dead ends: 20 [2018-11-28 23:05:53,643 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:05:53,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-11-28 23:05:53,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2018-11-28 23:05:53,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-28 23:05:53,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-28 23:05:53,648 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 12 [2018-11-28 23:05:53,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:53,648 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-28 23:05:53,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:05:53,648 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-28 23:05:53,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-28 23:05:53,649 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:53,649 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:53,649 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:53,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:53,650 INFO L82 PathProgramCache]: Analyzing trace with hash -179625769, now seen corresponding path program 1 times [2018-11-28 23:05:53,650 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:53,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:53,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:53,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:53,751 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 23:05:53,752 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:53,752 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 23:05:53,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:53,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:53,795 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:53,828 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 23:05:53,858 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:53,858 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2018-11-28 23:05:53,859 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:05:53,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:05:53,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:05:53,860 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 4 states. [2018-11-28 23:05:53,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:53,934 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-11-28 23:05:53,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 23:05:53,935 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-28 23:05:53,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:53,936 INFO L225 Difference]: With dead ends: 23 [2018-11-28 23:05:53,936 INFO L226 Difference]: Without dead ends: 22 [2018-11-28 23:05:53,938 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:05:53,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-11-28 23:05:53,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-11-28 23:05:53,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-28 23:05:53,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-11-28 23:05:53,944 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 14 [2018-11-28 23:05:53,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:53,944 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-11-28 23:05:53,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:05:53,946 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-11-28 23:05:53,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-11-28 23:05:53,946 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:53,947 INFO L402 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:53,947 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:53,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:53,949 INFO L82 PathProgramCache]: Analyzing trace with hash 298016926, now seen corresponding path program 2 times [2018-11-28 23:05:53,949 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:53,950 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:53,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,952 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:53,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:53,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:54,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:54,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:54,148 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 23:05:54,167 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:05:54,197 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:05:54,197 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:54,199 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:54,241 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:54,273 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:54,274 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 23:05:54,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:05:54,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:05:54,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:05:54,275 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 5 states. [2018-11-28 23:05:54,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:54,342 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2018-11-28 23:05:54,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:05:54,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-11-28 23:05:54,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:54,344 INFO L225 Difference]: With dead ends: 26 [2018-11-28 23:05:54,344 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 23:05:54,344 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:05:54,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 23:05:54,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-11-28 23:05:54,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-28 23:05:54,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2018-11-28 23:05:54,350 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 17 [2018-11-28 23:05:54,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:54,351 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2018-11-28 23:05:54,351 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:05:54,351 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2018-11-28 23:05:54,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-11-28 23:05:54,352 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:54,352 INFO L402 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:54,352 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:54,353 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:54,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1368541440, now seen corresponding path program 2 times [2018-11-28 23:05:54,353 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:54,353 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:54,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:54,355 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:54,355 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:54,440 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 23:05:54,440 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:54,440 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 23:05:54,456 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:05:54,467 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:05:54,468 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:54,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:54,529 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 23:05:54,551 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:54,551 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-28 23:05:54,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-28 23:05:54,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 23:05:54,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:05:54,553 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 5 states. [2018-11-28 23:05:54,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:54,588 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2018-11-28 23:05:54,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:05:54,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2018-11-28 23:05:54,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:54,590 INFO L225 Difference]: With dead ends: 28 [2018-11-28 23:05:54,590 INFO L226 Difference]: Without dead ends: 27 [2018-11-28 23:05:54,591 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:05:54,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-11-28 23:05:54,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-11-28 23:05:54,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-28 23:05:54,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2018-11-28 23:05:54,596 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 19 [2018-11-28 23:05:54,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:54,597 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2018-11-28 23:05:54,597 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-28 23:05:54,597 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2018-11-28 23:05:54,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-28 23:05:54,598 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:54,598 INFO L402 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:54,599 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:54,599 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:54,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1906552277, now seen corresponding path program 3 times [2018-11-28 23:05:54,599 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:54,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:54,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:54,601 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:54,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:54,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:54,780 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:54,781 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:54,781 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 23:05:54,795 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:05:54,843 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 23:05:54,843 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:54,845 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:54,901 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:54,921 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:54,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 23:05:54,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 23:05:54,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:05:54,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:05:54,923 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 6 states. [2018-11-28 23:05:54,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:54,984 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2018-11-28 23:05:54,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:05:54,987 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2018-11-28 23:05:54,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:54,988 INFO L225 Difference]: With dead ends: 31 [2018-11-28 23:05:54,988 INFO L226 Difference]: Without dead ends: 30 [2018-11-28 23:05:54,989 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:05:54,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-11-28 23:05:54,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2018-11-28 23:05:54,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-11-28 23:05:54,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2018-11-28 23:05:54,994 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 22 [2018-11-28 23:05:54,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:54,995 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2018-11-28 23:05:54,995 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 23:05:54,995 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2018-11-28 23:05:54,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 23:05:54,996 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:54,996 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:54,997 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:54,997 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:54,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1754295689, now seen corresponding path program 3 times [2018-11-28 23:05:54,997 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:54,997 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:54,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:54,999 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:54,999 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:55,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:55,080 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 23:05:55,080 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:55,080 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 23:05:55,092 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:05:55,103 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-28 23:05:55,103 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:55,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:55,162 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 23:05:55,182 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:55,183 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 23:05:55,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 23:05:55,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:05:55,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:05:55,184 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2018-11-28 23:05:55,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:55,314 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2018-11-28 23:05:55,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:05:55,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-28 23:05:55,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:55,316 INFO L225 Difference]: With dead ends: 33 [2018-11-28 23:05:55,316 INFO L226 Difference]: Without dead ends: 32 [2018-11-28 23:05:55,317 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:05:55,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2018-11-28 23:05:55,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2018-11-28 23:05:55,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 23:05:55,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2018-11-28 23:05:55,325 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 24 [2018-11-28 23:05:55,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:55,325 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2018-11-28 23:05:55,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 23:05:55,326 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2018-11-28 23:05:55,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-28 23:05:55,326 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:55,329 INFO L402 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:55,329 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:55,329 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:55,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1060762882, now seen corresponding path program 4 times [2018-11-28 23:05:55,330 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:55,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:55,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:55,331 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:55,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:55,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:55,490 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:55,490 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:55,490 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 23:05:55,503 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:05:55,541 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:05:55,541 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:55,544 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:55,722 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:55,756 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:55,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 23:05:55,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:05:55,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:05:55,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:05:55,758 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 7 states. [2018-11-28 23:05:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:55,944 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2018-11-28 23:05:55,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:05:55,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2018-11-28 23:05:55,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:55,946 INFO L225 Difference]: With dead ends: 36 [2018-11-28 23:05:55,946 INFO L226 Difference]: Without dead ends: 35 [2018-11-28 23:05:55,947 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:05:55,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-11-28 23:05:55,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-11-28 23:05:55,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 23:05:55,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2018-11-28 23:05:55,952 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 27 [2018-11-28 23:05:55,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:55,953 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2018-11-28 23:05:55,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:05:55,953 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2018-11-28 23:05:55,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 23:05:55,954 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:55,954 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:55,954 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:55,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:55,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1485878944, now seen corresponding path program 4 times [2018-11-28 23:05:55,955 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:55,955 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:55,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:55,956 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:55,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:56,062 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 23:05:56,063 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:56,063 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 23:05:56,085 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:05:56,129 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:05:56,129 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:56,132 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:56,333 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 23:05:56,365 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:56,365 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 23:05:56,366 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:05:56,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:05:56,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:05:56,367 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 7 states. [2018-11-28 23:05:56,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:56,453 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2018-11-28 23:05:56,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:05:56,454 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-11-28 23:05:56,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:56,456 INFO L225 Difference]: With dead ends: 38 [2018-11-28 23:05:56,456 INFO L226 Difference]: Without dead ends: 37 [2018-11-28 23:05:56,457 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:05:56,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2018-11-28 23:05:56,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2018-11-28 23:05:56,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-11-28 23:05:56,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2018-11-28 23:05:56,462 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 29 [2018-11-28 23:05:56,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:56,462 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2018-11-28 23:05:56,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:05:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2018-11-28 23:05:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-11-28 23:05:56,463 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:56,464 INFO L402 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:56,464 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:56,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:56,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1886617739, now seen corresponding path program 5 times [2018-11-28 23:05:56,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:56,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:56,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:56,466 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:56,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:56,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:56,596 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:56,597 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:56,597 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 23:05:56,607 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:05:56,626 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 23:05:56,626 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:56,628 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:56,749 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:56,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 23:05:56,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 23:05:56,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:05:56,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:05:56,750 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 8 states. [2018-11-28 23:05:56,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:56,833 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2018-11-28 23:05:56,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:05:56,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-11-28 23:05:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:56,835 INFO L225 Difference]: With dead ends: 41 [2018-11-28 23:05:56,836 INFO L226 Difference]: Without dead ends: 40 [2018-11-28 23:05:56,836 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:05:56,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2018-11-28 23:05:56,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2018-11-28 23:05:56,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 23:05:56,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2018-11-28 23:05:56,843 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 32 [2018-11-28 23:05:56,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:56,843 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2018-11-28 23:05:56,843 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 23:05:56,843 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2018-11-28 23:05:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 23:05:56,847 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:56,847 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:56,847 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:56,847 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:56,848 INFO L82 PathProgramCache]: Analyzing trace with hash -563446761, now seen corresponding path program 5 times [2018-11-28 23:05:56,848 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:56,848 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:56,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:56,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:56,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:56,948 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:56,948 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:56,948 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 23:05:56,961 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:05:57,003 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-11-28 23:05:57,004 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:57,006 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:57,118 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:57,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:57,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2018-11-28 23:05:57,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 23:05:57,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:05:57,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:05:57,139 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 8 states. [2018-11-28 23:05:57,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:57,216 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2018-11-28 23:05:57,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-28 23:05:57,217 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2018-11-28 23:05:57,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:57,218 INFO L225 Difference]: With dead ends: 43 [2018-11-28 23:05:57,218 INFO L226 Difference]: Without dead ends: 42 [2018-11-28 23:05:57,218 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:05:57,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2018-11-28 23:05:57,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-28 23:05:57,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-28 23:05:57,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 41 transitions. [2018-11-28 23:05:57,224 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 41 transitions. Word has length 34 [2018-11-28 23:05:57,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:57,224 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 41 transitions. [2018-11-28 23:05:57,224 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 23:05:57,224 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 41 transitions. [2018-11-28 23:05:57,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-11-28 23:05:57,225 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:57,225 INFO L402 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:57,226 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:57,226 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:57,226 INFO L82 PathProgramCache]: Analyzing trace with hash -910213794, now seen corresponding path program 6 times [2018-11-28 23:05:57,226 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:57,226 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:57,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:57,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:57,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:57,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:57,328 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:57,329 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:57,329 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 23:05:57,339 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 23:05:57,359 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 23:05:57,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:57,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:57,451 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:57,469 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:57,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 23:05:57,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:05:57,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:05:57,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:05:57,471 INFO L87 Difference]: Start difference. First operand 41 states and 41 transitions. Second operand 9 states. [2018-11-28 23:05:57,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:57,673 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2018-11-28 23:05:57,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:05:57,674 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2018-11-28 23:05:57,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:57,675 INFO L225 Difference]: With dead ends: 46 [2018-11-28 23:05:57,676 INFO L226 Difference]: Without dead ends: 45 [2018-11-28 23:05:57,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:05:57,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-11-28 23:05:57,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2018-11-28 23:05:57,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-11-28 23:05:57,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions. [2018-11-28 23:05:57,688 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 37 [2018-11-28 23:05:57,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:57,688 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions. [2018-11-28 23:05:57,689 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:05:57,689 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions. [2018-11-28 23:05:57,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-28 23:05:57,693 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:57,694 INFO L402 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:57,694 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:57,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:57,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1457873856, now seen corresponding path program 6 times [2018-11-28 23:05:57,695 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:57,695 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:57,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:57,696 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:57,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:57,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:57,797 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:57,797 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:57,797 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:05:57,808 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 23:05:57,860 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2018-11-28 23:05:57,861 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:57,864 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:57,999 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:57,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2018-11-28 23:05:57,999 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:05:58,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:05:58,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:05:58,000 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 9 states. [2018-11-28 23:05:58,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:58,034 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2018-11-28 23:05:58,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-28 23:05:58,036 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-11-28 23:05:58,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:58,037 INFO L225 Difference]: With dead ends: 48 [2018-11-28 23:05:58,037 INFO L226 Difference]: Without dead ends: 47 [2018-11-28 23:05:58,038 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:05:58,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-28 23:05:58,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 46. [2018-11-28 23:05:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2018-11-28 23:05:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2018-11-28 23:05:58,056 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 39 [2018-11-28 23:05:58,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:58,056 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2018-11-28 23:05:58,056 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:05:58,056 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2018-11-28 23:05:58,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2018-11-28 23:05:58,057 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:58,057 INFO L402 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:58,057 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:58,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:58,058 INFO L82 PathProgramCache]: Analyzing trace with hash 810797333, now seen corresponding path program 7 times [2018-11-28 23:05:58,058 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:58,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:58,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:58,060 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:58,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:58,162 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:58,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:58,162 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:05:58,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:58,202 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:58,633 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:58,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:58,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 23:05:58,654 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 23:05:58,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 23:05:58,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:05:58,655 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 10 states. [2018-11-28 23:05:58,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:58,729 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2018-11-28 23:05:58,730 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 23:05:58,730 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2018-11-28 23:05:58,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:58,731 INFO L225 Difference]: With dead ends: 51 [2018-11-28 23:05:58,732 INFO L226 Difference]: Without dead ends: 50 [2018-11-28 23:05:58,732 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 35 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:05:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-28 23:05:58,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2018-11-28 23:05:58,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-28 23:05:58,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2018-11-28 23:05:58,737 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2018-11-28 23:05:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:58,737 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2018-11-28 23:05:58,737 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 23:05:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2018-11-28 23:05:58,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-11-28 23:05:58,738 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:58,738 INFO L402 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:58,738 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:58,739 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:58,739 INFO L82 PathProgramCache]: Analyzing trace with hash 1787157943, now seen corresponding path program 7 times [2018-11-28 23:05:58,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:58,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:58,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:58,740 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:58,740 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:58,868 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:58,869 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:58,869 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:05:58,880 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:58,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:59,254 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:59,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2018-11-28 23:05:59,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-28 23:05:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-28 23:05:59,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:05:59,255 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 10 states. [2018-11-28 23:05:59,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:59,291 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2018-11-28 23:05:59,292 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-28 23:05:59,292 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2018-11-28 23:05:59,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:59,293 INFO L225 Difference]: With dead ends: 53 [2018-11-28 23:05:59,293 INFO L226 Difference]: Without dead ends: 52 [2018-11-28 23:05:59,294 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:05:59,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2018-11-28 23:05:59,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2018-11-28 23:05:59,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-28 23:05:59,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 51 transitions. [2018-11-28 23:05:59,300 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 51 transitions. Word has length 44 [2018-11-28 23:05:59,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:59,300 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 51 transitions. [2018-11-28 23:05:59,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-28 23:05:59,300 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 51 transitions. [2018-11-28 23:05:59,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2018-11-28 23:05:59,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:59,301 INFO L402 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:59,302 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:59,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:59,302 INFO L82 PathProgramCache]: Analyzing trace with hash 807729086, now seen corresponding path program 8 times [2018-11-28 23:05:59,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:59,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:59,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:59,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:05:59,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:59,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:05:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:59,434 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:05:59,434 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:05:59,443 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:05:59,454 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:05:59,455 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:05:59,457 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:05:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:05:59,581 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:05:59,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 23:05:59,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 23:05:59,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 23:05:59,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:05:59,582 INFO L87 Difference]: Start difference. First operand 51 states and 51 transitions. Second operand 11 states. [2018-11-28 23:05:59,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:05:59,673 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2018-11-28 23:05:59,674 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 23:05:59,674 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2018-11-28 23:05:59,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:05:59,675 INFO L225 Difference]: With dead ends: 56 [2018-11-28 23:05:59,675 INFO L226 Difference]: Without dead ends: 55 [2018-11-28 23:05:59,676 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:05:59,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2018-11-28 23:05:59,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2018-11-28 23:05:59,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2018-11-28 23:05:59,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2018-11-28 23:05:59,681 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 47 [2018-11-28 23:05:59,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:05:59,681 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2018-11-28 23:05:59,681 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 23:05:59,681 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2018-11-28 23:05:59,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-28 23:05:59,682 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:05:59,682 INFO L402 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1, 1, 1, 1, 1] [2018-11-28 23:05:59,683 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:05:59,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:05:59,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1161427424, now seen corresponding path program 8 times [2018-11-28 23:05:59,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:05:59,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:05:59,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:59,684 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:05:59,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:05:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:00,148 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:00,148 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:00,160 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:06:00,187 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:06:00,187 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:00,190 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:00,411 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:00,430 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:00,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2018-11-28 23:06:00,430 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-28 23:06:00,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-28 23:06:00,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:06:00,431 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 11 states. [2018-11-28 23:06:00,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:00,466 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2018-11-28 23:06:00,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 23:06:00,468 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2018-11-28 23:06:00,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:00,469 INFO L225 Difference]: With dead ends: 58 [2018-11-28 23:06:00,469 INFO L226 Difference]: Without dead ends: 57 [2018-11-28 23:06:00,470 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 41 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2018-11-28 23:06:00,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-28 23:06:00,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2018-11-28 23:06:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-11-28 23:06:00,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2018-11-28 23:06:00,474 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 49 [2018-11-28 23:06:00,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:00,475 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2018-11-28 23:06:00,475 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-28 23:06:00,475 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2018-11-28 23:06:00,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-28 23:06:00,476 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:00,476 INFO L402 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:00,476 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:00,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:00,477 INFO L82 PathProgramCache]: Analyzing trace with hash 172198581, now seen corresponding path program 9 times [2018-11-28 23:06:00,477 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:00,477 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:00,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:00,478 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:00,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:00,649 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:00,650 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:00,650 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:00,662 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:06:00,682 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 23:06:00,682 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:00,686 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:00,870 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:00,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:00,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 23:06:00,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 23:06:00,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 23:06:00,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 23:06:00,890 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 12 states. [2018-11-28 23:06:00,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:00,959 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2018-11-28 23:06:00,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 23:06:00,960 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2018-11-28 23:06:00,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:00,962 INFO L225 Difference]: With dead ends: 61 [2018-11-28 23:06:00,962 INFO L226 Difference]: Without dead ends: 60 [2018-11-28 23:06:00,963 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 43 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 23:06:00,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-28 23:06:00,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2018-11-28 23:06:00,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2018-11-28 23:06:00,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2018-11-28 23:06:00,969 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 52 [2018-11-28 23:06:00,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:00,970 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2018-11-28 23:06:00,970 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 23:06:00,970 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2018-11-28 23:06:00,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-11-28 23:06:00,971 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:00,971 INFO L402 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:00,971 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:00,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:00,971 INFO L82 PathProgramCache]: Analyzing trace with hash -2020886697, now seen corresponding path program 9 times [2018-11-28 23:06:00,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:00,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:00,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:00,973 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:00,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:01,125 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:01,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:01,126 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:01,136 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:06:01,165 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-11-28 23:06:01,165 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:01,167 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:01,311 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:01,330 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:01,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2018-11-28 23:06:01,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-28 23:06:01,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-28 23:06:01,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 23:06:01,331 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand 12 states. [2018-11-28 23:06:01,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:01,456 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2018-11-28 23:06:01,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-28 23:06:01,460 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2018-11-28 23:06:01,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:01,460 INFO L225 Difference]: With dead ends: 63 [2018-11-28 23:06:01,460 INFO L226 Difference]: Without dead ends: 62 [2018-11-28 23:06:01,461 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 45 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2018-11-28 23:06:01,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2018-11-28 23:06:01,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2018-11-28 23:06:01,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2018-11-28 23:06:01,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 61 transitions. [2018-11-28 23:06:01,465 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 61 transitions. Word has length 54 [2018-11-28 23:06:01,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:01,465 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 61 transitions. [2018-11-28 23:06:01,465 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-28 23:06:01,466 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 61 transitions. [2018-11-28 23:06:01,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-11-28 23:06:01,466 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:01,466 INFO L402 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:01,467 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:01,467 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:01,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1678951906, now seen corresponding path program 10 times [2018-11-28 23:06:01,467 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:01,467 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:01,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:01,468 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:01,468 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:01,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:01,744 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:01,744 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:01,744 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:01,756 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:06:01,773 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:06:01,773 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:01,775 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:01,981 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:02,000 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:02,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 23:06:02,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 23:06:02,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 23:06:02,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 23:06:02,001 INFO L87 Difference]: Start difference. First operand 61 states and 61 transitions. Second operand 13 states. [2018-11-28 23:06:02,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:02,120 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2018-11-28 23:06:02,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 23:06:02,122 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2018-11-28 23:06:02,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:02,123 INFO L225 Difference]: With dead ends: 66 [2018-11-28 23:06:02,123 INFO L226 Difference]: Without dead ends: 65 [2018-11-28 23:06:02,124 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 47 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 23:06:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2018-11-28 23:06:02,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 64. [2018-11-28 23:06:02,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-11-28 23:06:02,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions. [2018-11-28 23:06:02,128 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 57 [2018-11-28 23:06:02,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:02,129 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions. [2018-11-28 23:06:02,129 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 23:06:02,129 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions. [2018-11-28 23:06:02,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2018-11-28 23:06:02,130 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:02,130 INFO L402 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:02,130 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:02,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:02,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1434923136, now seen corresponding path program 10 times [2018-11-28 23:06:02,131 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:02,131 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:02,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,132 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:02,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:02,350 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:02,351 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:02,363 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:06:02,378 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:06:02,378 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:02,381 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:02,549 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:02,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:02,568 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2018-11-28 23:06:02,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-28 23:06:02,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-28 23:06:02,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 23:06:02,569 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 13 states. [2018-11-28 23:06:02,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:02,610 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2018-11-28 23:06:02,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-28 23:06:02,612 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2018-11-28 23:06:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:02,613 INFO L225 Difference]: With dead ends: 68 [2018-11-28 23:06:02,613 INFO L226 Difference]: Without dead ends: 67 [2018-11-28 23:06:02,613 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 49 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2018-11-28 23:06:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2018-11-28 23:06:02,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2018-11-28 23:06:02,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2018-11-28 23:06:02,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions. [2018-11-28 23:06:02,617 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 59 [2018-11-28 23:06:02,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:02,617 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions. [2018-11-28 23:06:02,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-28 23:06:02,617 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions. [2018-11-28 23:06:02,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-11-28 23:06:02,618 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:02,618 INFO L402 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:02,618 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:02,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:02,619 INFO L82 PathProgramCache]: Analyzing trace with hash -14302123, now seen corresponding path program 11 times [2018-11-28 23:06:02,619 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:02,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:02,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,620 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:02,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:03,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:03,407 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:03,419 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:06:03,441 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-28 23:06:03,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:03,444 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:03,679 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:03,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:03,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-28 23:06:03,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 23:06:03,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 23:06:03,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-28 23:06:03,699 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 14 states. [2018-11-28 23:06:03,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:03,850 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions. [2018-11-28 23:06:03,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 23:06:03,852 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2018-11-28 23:06:03,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:03,853 INFO L225 Difference]: With dead ends: 71 [2018-11-28 23:06:03,854 INFO L226 Difference]: Without dead ends: 70 [2018-11-28 23:06:03,854 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 51 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-28 23:06:03,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2018-11-28 23:06:03,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2018-11-28 23:06:03,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2018-11-28 23:06:03,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 69 transitions. [2018-11-28 23:06:03,858 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 69 transitions. Word has length 62 [2018-11-28 23:06:03,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:03,858 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 69 transitions. [2018-11-28 23:06:03,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 23:06:03,861 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 69 transitions. [2018-11-28 23:06:03,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-28 23:06:03,862 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:03,862 INFO L402 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:03,862 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:03,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:03,863 INFO L82 PathProgramCache]: Analyzing trace with hash -859436809, now seen corresponding path program 11 times [2018-11-28 23:06:03,863 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:03,863 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:03,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:03,867 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:03,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:03,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:04,486 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:04,487 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:04,487 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:04,496 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:06:04,520 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-11-28 23:06:04,520 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:04,522 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:04,743 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:04,770 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:04,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2018-11-28 23:06:04,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-28 23:06:04,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-28 23:06:04,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-28 23:06:04,772 INFO L87 Difference]: Start difference. First operand 69 states and 69 transitions. Second operand 14 states. [2018-11-28 23:06:04,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:04,879 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2018-11-28 23:06:04,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-28 23:06:04,880 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 64 [2018-11-28 23:06:04,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:04,880 INFO L225 Difference]: With dead ends: 73 [2018-11-28 23:06:04,880 INFO L226 Difference]: Without dead ends: 72 [2018-11-28 23:06:04,881 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 53 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2018-11-28 23:06:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-11-28 23:06:04,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2018-11-28 23:06:04,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-11-28 23:06:04,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 71 transitions. [2018-11-28 23:06:04,884 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 71 transitions. Word has length 64 [2018-11-28 23:06:04,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:04,884 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 71 transitions. [2018-11-28 23:06:04,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-11-28 23:06:04,884 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 71 transitions. [2018-11-28 23:06:04,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-28 23:06:04,885 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:04,885 INFO L402 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:04,888 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:04,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:04,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1181875074, now seen corresponding path program 12 times [2018-11-28 23:06:04,888 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:04,888 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:04,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:04,889 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:04,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:05,292 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:05,293 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:05,293 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:05,303 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 23:06:05,325 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-28 23:06:05,326 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:05,328 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:05,494 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:05,513 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:05,513 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-28 23:06:05,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 23:06:05,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 23:06:05,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-28 23:06:05,514 INFO L87 Difference]: Start difference. First operand 71 states and 71 transitions. Second operand 15 states. [2018-11-28 23:06:05,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:05,581 INFO L93 Difference]: Finished difference Result 76 states and 76 transitions. [2018-11-28 23:06:05,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 23:06:05,582 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 67 [2018-11-28 23:06:05,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:05,584 INFO L225 Difference]: With dead ends: 76 [2018-11-28 23:06:05,584 INFO L226 Difference]: Without dead ends: 75 [2018-11-28 23:06:05,585 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 55 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-28 23:06:05,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-11-28 23:06:05,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 74. [2018-11-28 23:06:05,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-11-28 23:06:05,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions. [2018-11-28 23:06:05,588 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 67 [2018-11-28 23:06:05,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:05,589 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions. [2018-11-28 23:06:05,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 23:06:05,589 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions. [2018-11-28 23:06:05,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-28 23:06:05,590 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:05,590 INFO L402 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:05,590 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:05,590 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:05,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1910578464, now seen corresponding path program 12 times [2018-11-28 23:06:05,590 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:05,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:05,591 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:05,592 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:05,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:05,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:05,826 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:05,827 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:05,827 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:05,836 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 23:06:05,859 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-11-28 23:06:05,859 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:05,862 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:06,046 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:06,064 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:06,064 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2018-11-28 23:06:06,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 23:06:06,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 23:06:06,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-28 23:06:06,065 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 15 states. [2018-11-28 23:06:06,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:06,200 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2018-11-28 23:06:06,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-28 23:06:06,201 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 69 [2018-11-28 23:06:06,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:06,202 INFO L225 Difference]: With dead ends: 78 [2018-11-28 23:06:06,202 INFO L226 Difference]: Without dead ends: 77 [2018-11-28 23:06:06,203 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 57 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2018-11-28 23:06:06,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2018-11-28 23:06:06,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 76. [2018-11-28 23:06:06,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-11-28 23:06:06,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions. [2018-11-28 23:06:06,207 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 69 [2018-11-28 23:06:06,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:06,207 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions. [2018-11-28 23:06:06,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 23:06:06,207 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions. [2018-11-28 23:06:06,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-28 23:06:06,208 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:06,208 INFO L402 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:06,208 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:06,209 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:06,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1136364043, now seen corresponding path program 13 times [2018-11-28 23:06:06,209 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:06,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:06,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:06,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:06,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:06,495 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:06,495 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:06,495 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:06,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:06,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:06,532 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:06,788 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:06,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 23:06:06,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 23:06:06,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 23:06:06,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-28 23:06:06,790 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 16 states. [2018-11-28 23:06:06,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:06,855 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2018-11-28 23:06:06,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 23:06:06,856 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2018-11-28 23:06:06,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:06,858 INFO L225 Difference]: With dead ends: 81 [2018-11-28 23:06:06,858 INFO L226 Difference]: Without dead ends: 80 [2018-11-28 23:06:06,859 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 59 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-28 23:06:06,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2018-11-28 23:06:06,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2018-11-28 23:06:06,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-11-28 23:06:06,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 79 transitions. [2018-11-28 23:06:06,863 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 79 transitions. Word has length 72 [2018-11-28 23:06:06,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:06,864 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 79 transitions. [2018-11-28 23:06:06,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 23:06:06,864 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 79 transitions. [2018-11-28 23:06:06,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2018-11-28 23:06:06,865 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:06,868 INFO L402 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:06,868 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:06,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:06,869 INFO L82 PathProgramCache]: Analyzing trace with hash -1124150633, now seen corresponding path program 13 times [2018-11-28 23:06:06,869 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:06,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:06,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:06,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:06,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:07,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:07,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:07,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:07,213 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:07,449 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:07,467 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:07,468 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2018-11-28 23:06:07,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-28 23:06:07,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-28 23:06:07,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-28 23:06:07,469 INFO L87 Difference]: Start difference. First operand 79 states and 79 transitions. Second operand 16 states. [2018-11-28 23:06:07,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:07,539 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions. [2018-11-28 23:06:07,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-28 23:06:07,540 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 74 [2018-11-28 23:06:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:07,541 INFO L225 Difference]: With dead ends: 83 [2018-11-28 23:06:07,541 INFO L226 Difference]: Without dead ends: 82 [2018-11-28 23:06:07,542 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2018-11-28 23:06:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2018-11-28 23:06:07,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2018-11-28 23:06:07,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-28 23:06:07,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 81 transitions. [2018-11-28 23:06:07,545 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 81 transitions. Word has length 74 [2018-11-28 23:06:07,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:07,546 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 81 transitions. [2018-11-28 23:06:07,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-28 23:06:07,546 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 81 transitions. [2018-11-28 23:06:07,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-11-28 23:06:07,546 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:07,547 INFO L402 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:07,547 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:07,547 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:07,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1711450402, now seen corresponding path program 14 times [2018-11-28 23:06:07,547 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:07,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:07,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:07,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:07,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:07,795 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:07,795 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:07,795 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:07,806 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:06:07,827 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:06:07,828 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:07,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:08,124 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:08,143 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:08,143 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-28 23:06:08,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 23:06:08,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 23:06:08,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-28 23:06:08,144 INFO L87 Difference]: Start difference. First operand 81 states and 81 transitions. Second operand 17 states. [2018-11-28 23:06:08,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:08,218 INFO L93 Difference]: Finished difference Result 86 states and 86 transitions. [2018-11-28 23:06:08,220 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 23:06:08,220 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 77 [2018-11-28 23:06:08,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:08,223 INFO L225 Difference]: With dead ends: 86 [2018-11-28 23:06:08,223 INFO L226 Difference]: Without dead ends: 85 [2018-11-28 23:06:08,223 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 63 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-28 23:06:08,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2018-11-28 23:06:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 84. [2018-11-28 23:06:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-11-28 23:06:08,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions. [2018-11-28 23:06:08,229 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 77 [2018-11-28 23:06:08,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:08,230 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions. [2018-11-28 23:06:08,230 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 23:06:08,230 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions. [2018-11-28 23:06:08,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-11-28 23:06:08,230 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:08,231 INFO L402 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:08,231 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:08,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:08,231 INFO L82 PathProgramCache]: Analyzing trace with hash 268639552, now seen corresponding path program 14 times [2018-11-28 23:06:08,231 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:08,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:08,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:08,233 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:08,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:08,531 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:08,532 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:08,532 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:08,548 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:06:08,574 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:06:08,574 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:08,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:08,817 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:08,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:08,836 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2018-11-28 23:06:08,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-28 23:06:08,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-28 23:06:08,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-28 23:06:08,837 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 17 states. [2018-11-28 23:06:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:08,889 INFO L93 Difference]: Finished difference Result 88 states and 88 transitions. [2018-11-28 23:06:08,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-28 23:06:08,891 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2018-11-28 23:06:08,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:08,892 INFO L225 Difference]: With dead ends: 88 [2018-11-28 23:06:08,893 INFO L226 Difference]: Without dead ends: 87 [2018-11-28 23:06:08,893 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 65 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2018-11-28 23:06:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2018-11-28 23:06:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 86. [2018-11-28 23:06:08,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2018-11-28 23:06:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions. [2018-11-28 23:06:08,897 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 79 [2018-11-28 23:06:08,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:08,897 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions. [2018-11-28 23:06:08,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-28 23:06:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions. [2018-11-28 23:06:08,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-28 23:06:08,898 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:08,898 INFO L402 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:08,902 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:08,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:08,902 INFO L82 PathProgramCache]: Analyzing trace with hash 1516871573, now seen corresponding path program 15 times [2018-11-28 23:06:08,902 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:08,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:08,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:08,903 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:08,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:09,177 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:09,178 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:09,178 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:09,191 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:06:09,222 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-28 23:06:09,222 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:09,225 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:09,487 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:09,506 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:09,506 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-28 23:06:09,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 23:06:09,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 23:06:09,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-28 23:06:09,507 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 18 states. [2018-11-28 23:06:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:09,618 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2018-11-28 23:06:09,619 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 23:06:09,620 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 82 [2018-11-28 23:06:09,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:09,621 INFO L225 Difference]: With dead ends: 91 [2018-11-28 23:06:09,621 INFO L226 Difference]: Without dead ends: 90 [2018-11-28 23:06:09,622 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-28 23:06:09,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2018-11-28 23:06:09,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2018-11-28 23:06:09,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2018-11-28 23:06:09,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 89 transitions. [2018-11-28 23:06:09,627 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 89 transitions. Word has length 82 [2018-11-28 23:06:09,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:09,627 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 89 transitions. [2018-11-28 23:06:09,627 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 23:06:09,627 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 89 transitions. [2018-11-28 23:06:09,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-28 23:06:09,628 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:09,628 INFO L402 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:09,631 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:09,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:09,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1719669815, now seen corresponding path program 15 times [2018-11-28 23:06:09,631 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:09,631 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:09,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:09,632 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:09,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:09,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:10,227 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:10,227 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:10,227 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:10,237 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:06:10,272 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-11-28 23:06:10,272 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:10,274 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:10,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:10,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2018-11-28 23:06:10,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-28 23:06:10,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-28 23:06:10,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-28 23:06:10,581 INFO L87 Difference]: Start difference. First operand 89 states and 89 transitions. Second operand 18 states. [2018-11-28 23:06:10,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:10,641 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions. [2018-11-28 23:06:10,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-28 23:06:10,643 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2018-11-28 23:06:10,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:10,645 INFO L225 Difference]: With dead ends: 93 [2018-11-28 23:06:10,645 INFO L226 Difference]: Without dead ends: 92 [2018-11-28 23:06:10,645 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 69 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2018-11-28 23:06:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2018-11-28 23:06:10,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2018-11-28 23:06:10,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2018-11-28 23:06:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 91 transitions. [2018-11-28 23:06:10,649 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 91 transitions. Word has length 84 [2018-11-28 23:06:10,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:10,650 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 91 transitions. [2018-11-28 23:06:10,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-28 23:06:10,650 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 91 transitions. [2018-11-28 23:06:10,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-11-28 23:06:10,650 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:10,651 INFO L402 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:10,651 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:10,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:10,651 INFO L82 PathProgramCache]: Analyzing trace with hash 313602366, now seen corresponding path program 16 times [2018-11-28 23:06:10,651 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:10,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:10,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:10,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:10,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:11,538 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:11,538 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:11,538 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:11,549 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:06:11,577 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:06:11,577 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:11,579 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:11,872 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:11,873 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-28 23:06:11,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 23:06:11,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 23:06:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-28 23:06:11,874 INFO L87 Difference]: Start difference. First operand 91 states and 91 transitions. Second operand 19 states. [2018-11-28 23:06:11,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:11,951 INFO L93 Difference]: Finished difference Result 96 states and 96 transitions. [2018-11-28 23:06:11,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 23:06:11,952 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 87 [2018-11-28 23:06:11,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:11,954 INFO L225 Difference]: With dead ends: 96 [2018-11-28 23:06:11,954 INFO L226 Difference]: Without dead ends: 95 [2018-11-28 23:06:11,955 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 71 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-28 23:06:11,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-11-28 23:06:11,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2018-11-28 23:06:11,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2018-11-28 23:06:11,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions. [2018-11-28 23:06:11,959 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 87 [2018-11-28 23:06:11,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:11,959 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions. [2018-11-28 23:06:11,959 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 23:06:11,959 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions. [2018-11-28 23:06:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2018-11-28 23:06:11,960 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:11,960 INFO L402 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:11,960 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:11,960 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:11,960 INFO L82 PathProgramCache]: Analyzing trace with hash 724164512, now seen corresponding path program 16 times [2018-11-28 23:06:11,961 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:11,961 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:11,961 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:11,961 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:11,962 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:11,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:13,081 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:13,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:13,081 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:13,092 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-28 23:06:13,111 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-11-28 23:06:13,111 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:13,113 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:13,686 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:13,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-28 23:06:13,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-28 23:06:13,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-28 23:06:13,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-28 23:06:13,687 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 19 states. [2018-11-28 23:06:13,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:13,757 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2018-11-28 23:06:13,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-28 23:06:13,758 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2018-11-28 23:06:13,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:13,759 INFO L225 Difference]: With dead ends: 98 [2018-11-28 23:06:13,760 INFO L226 Difference]: Without dead ends: 97 [2018-11-28 23:06:13,760 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 73 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2018-11-28 23:06:13,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2018-11-28 23:06:13,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 96. [2018-11-28 23:06:13,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2018-11-28 23:06:13,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions. [2018-11-28 23:06:13,765 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 89 [2018-11-28 23:06:13,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:13,765 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions. [2018-11-28 23:06:13,765 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-28 23:06:13,765 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions. [2018-11-28 23:06:13,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-28 23:06:13,769 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:13,769 INFO L402 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:13,769 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:13,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:13,770 INFO L82 PathProgramCache]: Analyzing trace with hash -35700427, now seen corresponding path program 17 times [2018-11-28 23:06:13,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:13,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:13,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:13,775 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:13,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:14,728 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:14,728 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:14,728 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:14,749 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:06:14,829 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-28 23:06:14,829 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:14,832 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:15,235 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:15,235 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-28 23:06:15,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 23:06:15,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 23:06:15,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-28 23:06:15,236 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 20 states. [2018-11-28 23:06:15,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:15,381 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions. [2018-11-28 23:06:15,382 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 23:06:15,382 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 92 [2018-11-28 23:06:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:15,383 INFO L225 Difference]: With dead ends: 101 [2018-11-28 23:06:15,383 INFO L226 Difference]: Without dead ends: 100 [2018-11-28 23:06:15,383 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 75 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-28 23:06:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2018-11-28 23:06:15,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 99. [2018-11-28 23:06:15,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2018-11-28 23:06:15,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 99 transitions. [2018-11-28 23:06:15,387 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 99 transitions. Word has length 92 [2018-11-28 23:06:15,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:15,387 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 99 transitions. [2018-11-28 23:06:15,387 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 23:06:15,388 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 99 transitions. [2018-11-28 23:06:15,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-28 23:06:15,388 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:15,388 INFO L402 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:15,389 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:15,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:15,393 INFO L82 PathProgramCache]: Analyzing trace with hash 51629527, now seen corresponding path program 17 times [2018-11-28 23:06:15,393 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:15,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:15,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:15,394 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:15,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:15,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:16,193 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:16,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:16,193 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:16,204 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-11-28 23:06:16,273 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2018-11-28 23:06:16,273 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:16,275 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:16,529 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:16,548 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:16,548 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2018-11-28 23:06:16,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-28 23:06:16,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-28 23:06:16,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-28 23:06:16,549 INFO L87 Difference]: Start difference. First operand 99 states and 99 transitions. Second operand 20 states. [2018-11-28 23:06:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:16,613 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions. [2018-11-28 23:06:16,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-28 23:06:16,615 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 94 [2018-11-28 23:06:16,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:16,616 INFO L225 Difference]: With dead ends: 103 [2018-11-28 23:06:16,616 INFO L226 Difference]: Without dead ends: 102 [2018-11-28 23:06:16,617 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2018-11-28 23:06:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-11-28 23:06:16,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2018-11-28 23:06:16,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2018-11-28 23:06:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 101 transitions. [2018-11-28 23:06:16,621 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 101 transitions. Word has length 94 [2018-11-28 23:06:16,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:16,621 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 101 transitions. [2018-11-28 23:06:16,621 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-28 23:06:16,621 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 101 transitions. [2018-11-28 23:06:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2018-11-28 23:06:16,622 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:16,622 INFO L402 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:16,622 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:16,623 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:16,623 INFO L82 PathProgramCache]: Analyzing trace with hash 496997278, now seen corresponding path program 18 times [2018-11-28 23:06:16,623 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:16,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:16,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:16,624 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:16,624 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:17,033 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:17,033 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:17,033 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:17,045 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 23:06:17,083 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-28 23:06:17,084 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:17,086 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:17,461 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:17,479 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:17,479 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-11-28 23:06:17,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 23:06:17,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 23:06:17,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-28 23:06:17,480 INFO L87 Difference]: Start difference. First operand 101 states and 101 transitions. Second operand 21 states. [2018-11-28 23:06:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:17,567 INFO L93 Difference]: Finished difference Result 106 states and 106 transitions. [2018-11-28 23:06:17,569 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-28 23:06:17,569 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 97 [2018-11-28 23:06:17,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:17,570 INFO L225 Difference]: With dead ends: 106 [2018-11-28 23:06:17,571 INFO L226 Difference]: Without dead ends: 105 [2018-11-28 23:06:17,571 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 79 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-28 23:06:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2018-11-28 23:06:17,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2018-11-28 23:06:17,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2018-11-28 23:06:17,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions. [2018-11-28 23:06:17,575 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 97 [2018-11-28 23:06:17,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:17,576 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions. [2018-11-28 23:06:17,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 23:06:17,576 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions. [2018-11-28 23:06:17,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-28 23:06:17,576 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:17,577 INFO L402 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:17,577 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:17,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:17,577 INFO L82 PathProgramCache]: Analyzing trace with hash 873015808, now seen corresponding path program 18 times [2018-11-28 23:06:17,577 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:17,577 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:17,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:17,578 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:17,578 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:17,852 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:17,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:17,853 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:17,863 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-11-28 23:06:17,900 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2018-11-28 23:06:17,901 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:06:17,904 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:18,198 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:18,216 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:18,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2018-11-28 23:06:18,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-28 23:06:18,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-28 23:06:18,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-28 23:06:18,218 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 21 states. [2018-11-28 23:06:18,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:18,370 INFO L93 Difference]: Finished difference Result 108 states and 108 transitions. [2018-11-28 23:06:18,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-28 23:06:18,372 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 99 [2018-11-28 23:06:18,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:18,374 INFO L225 Difference]: With dead ends: 108 [2018-11-28 23:06:18,374 INFO L226 Difference]: Without dead ends: 107 [2018-11-28 23:06:18,375 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 81 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2018-11-28 23:06:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2018-11-28 23:06:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 106. [2018-11-28 23:06:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2018-11-28 23:06:18,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2018-11-28 23:06:18,379 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 99 [2018-11-28 23:06:18,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:18,379 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2018-11-28 23:06:18,379 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-28 23:06:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2018-11-28 23:06:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-28 23:06:18,383 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:18,383 INFO L402 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:18,384 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:18,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1987009237, now seen corresponding path program 19 times [2018-11-28 23:06:18,384 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:18,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:18,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:18,385 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:06:18,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:18,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:18,883 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:18,883 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:06:18,883 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-28 23:06:18,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:18,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:06:18,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:06:19,223 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:06:19,243 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:06:19,243 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 21 [2018-11-28 23:06:19,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-28 23:06:19,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-28 23:06:19,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-28 23:06:19,244 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 22 states. [2018-11-28 23:06:19,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:06:19,335 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions. [2018-11-28 23:06:19,337 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-28 23:06:19,337 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 102 [2018-11-28 23:06:19,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:06:19,338 INFO L225 Difference]: With dead ends: 111 [2018-11-28 23:06:19,339 INFO L226 Difference]: Without dead ends: 110 [2018-11-28 23:06:19,339 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 83 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2018-11-28 23:06:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2018-11-28 23:06:19,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2018-11-28 23:06:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-11-28 23:06:19,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 109 transitions. [2018-11-28 23:06:19,343 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 109 transitions. Word has length 102 [2018-11-28 23:06:19,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:06:19,344 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 109 transitions. [2018-11-28 23:06:19,344 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-28 23:06:19,344 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 109 transitions. [2018-11-28 23:06:19,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-28 23:06:19,346 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:06:19,346 INFO L402 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1, 1, 1, 1, 1] [2018-11-28 23:06:19,347 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:06:19,347 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:06:19,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1744568457, now seen corresponding path program 19 times [2018-11-28 23:06:19,347 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:06:19,347 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:06:19,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:19,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:06:19,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:06:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:06:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 23:06:19,390 INFO L469 BasicCegarLoop]: Counterexample might be feasible [2018-11-28 23:06:19,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:06:19 BoogieIcfgContainer [2018-11-28 23:06:19,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:06:19,434 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:06:19,434 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:06:19,435 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:06:19,438 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:05:52" (3/4) ... [2018-11-28 23:06:19,442 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-28 23:06:19,511 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:06:19,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:06:19,513 INFO L168 Benchmark]: Toolchain (without parser) took 27833.23 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 338.2 MB). Free memory was 946.0 MB in the beginning and 962.9 MB in the end (delta: -16.9 MB). Peak memory consumption was 321.3 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:19,515 INFO L168 Benchmark]: CDTParser took 0.35 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 23:06:19,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.95 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:19,516 INFO L168 Benchmark]: Boogie Procedure Inliner took 21.01 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:19,516 INFO L168 Benchmark]: Boogie Preprocessor took 28.23 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:06:19,516 INFO L168 Benchmark]: RCFGBuilder took 328.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:19,517 INFO L168 Benchmark]: TraceAbstraction took 27099.56 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 205.5 MB). Free memory was 1.1 GB in the beginning and 972.7 MB in the end (delta: 138.0 MB). Peak memory consumption was 343.5 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:19,517 INFO L168 Benchmark]: Witness Printer took 76.60 ms. Allocated memory is still 1.4 GB. Free memory was 972.7 MB in the beginning and 962.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:06:19,525 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 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 273.95 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 21.01 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 28.23 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 328.07 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 27099.56 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 205.5 MB). Free memory was 1.1 GB in the beginning and 972.7 MB in the end (delta: 138.0 MB). Peak memory consumption was 343.5 MB. Max. memory is 11.5 GB. * Witness Printer took 76.60 ms. Allocated memory is still 1.4 GB. Free memory was 972.7 MB in the beginning and 962.9 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 VAL [x=1, y=1] [L18] COND TRUE x >= 0 VAL [x=1, y=1] [L19] EXPR 2*x [L19] x = 2*x VAL [x=2, y=1] [L20] EXPR 3*y [L20] y = 3*y VAL [x=2, y=3] [L18] COND TRUE x >= 0 VAL [x=2, y=3] [L19] EXPR 2*x [L19] x = 2*x VAL [x=4, y=3] [L20] EXPR 3*y [L20] y = 3*y VAL [x=4, y=9] [L18] COND TRUE x >= 0 VAL [x=4, y=9] [L19] EXPR 2*x [L19] x = 2*x VAL [x=8, y=9] [L20] EXPR 3*y [L20] y = 3*y VAL [x=8, y=27] [L18] COND TRUE x >= 0 VAL [x=8, y=27] [L19] EXPR 2*x [L19] x = 2*x VAL [x=16, y=27] [L20] EXPR 3*y [L20] y = 3*y VAL [x=16, y=81] [L18] COND TRUE x >= 0 VAL [x=16, y=81] [L19] EXPR 2*x [L19] x = 2*x VAL [x=32, y=81] [L20] EXPR 3*y [L20] y = 3*y VAL [x=32, y=243] [L18] COND TRUE x >= 0 VAL [x=32, y=243] [L19] EXPR 2*x [L19] x = 2*x VAL [x=64, y=243] [L20] EXPR 3*y [L20] y = 3*y VAL [x=64, y=729] [L18] COND TRUE x >= 0 VAL [x=64, y=729] [L19] EXPR 2*x [L19] x = 2*x VAL [x=128, y=729] [L20] EXPR 3*y [L20] y = 3*y VAL [x=128, y=2187] [L18] COND TRUE x >= 0 VAL [x=128, y=2187] [L19] EXPR 2*x [L19] x = 2*x VAL [x=256, y=2187] [L20] EXPR 3*y [L20] y = 3*y VAL [x=256, y=6561] [L18] COND TRUE x >= 0 VAL [x=256, y=6561] [L19] EXPR 2*x [L19] x = 2*x VAL [x=512, y=6561] [L20] EXPR 3*y [L20] y = 3*y VAL [x=512, y=19683] [L18] COND TRUE x >= 0 VAL [x=512, y=19683] [L19] EXPR 2*x [L19] x = 2*x VAL [x=1024, y=19683] [L20] EXPR 3*y [L20] y = 3*y VAL [x=1024, y=59049] [L18] COND TRUE x >= 0 VAL [x=1024, y=59049] [L19] EXPR 2*x [L19] x = 2*x VAL [x=2048, y=59049] [L20] EXPR 3*y [L20] y = 3*y VAL [x=2048, y=177147] [L18] COND TRUE x >= 0 VAL [x=2048, y=177147] [L19] EXPR 2*x [L19] x = 2*x VAL [x=4096, y=177147] [L20] EXPR 3*y [L20] y = 3*y VAL [x=4096, y=531441] [L18] COND TRUE x >= 0 VAL [x=4096, y=531441] [L19] EXPR 2*x [L19] x = 2*x VAL [x=8192, y=531441] [L20] EXPR 3*y [L20] y = 3*y VAL [x=8192, y=1594323] [L18] COND TRUE x >= 0 VAL [x=8192, y=1594323] [L19] EXPR 2*x [L19] x = 2*x VAL [x=16384, y=1594323] [L20] EXPR 3*y [L20] y = 3*y VAL [x=16384, y=4782969] [L18] COND TRUE x >= 0 VAL [x=16384, y=4782969] [L19] EXPR 2*x [L19] x = 2*x VAL [x=32768, y=4782969] [L20] EXPR 3*y [L20] y = 3*y VAL [x=32768, y=14348907] [L18] COND TRUE x >= 0 VAL [x=32768, y=14348907] [L19] EXPR 2*x [L19] x = 2*x VAL [x=65536, y=14348907] [L20] EXPR 3*y [L20] y = 3*y VAL [x=65536, y=43046721] [L18] COND TRUE x >= 0 VAL [x=65536, y=43046721] [L19] EXPR 2*x [L19] x = 2*x VAL [x=131072, y=43046721] [L20] EXPR 3*y [L20] y = 3*y VAL [x=131072, y=129140163] [L18] COND TRUE x >= 0 VAL [x=131072, y=129140163] [L19] EXPR 2*x [L19] x = 2*x VAL [x=262144, y=129140163] [L20] EXPR 3*y [L20] y = 3*y VAL [x=262144, y=387420489] [L18] COND TRUE x >= 0 VAL [x=262144, y=387420489] [L19] EXPR 2*x [L19] x = 2*x VAL [x=524288, y=387420489] [L20] EXPR 3*y [L20] y = 3*y VAL [x=524288, y=1162261467] [L18] COND TRUE x >= 0 VAL [x=524288, y=1162261467] [L19] EXPR 2*x [L19] x = 2*x VAL [x=1048576, y=1162261467] [L20] 3*y VAL [x=1048576, y=1162261467] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 4 error locations. UNSAFE Result, 27.0s OverallTime, 42 OverallIterations, 20 TraceHistogramMax, 3.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 393 SDtfs, 412 SDslu, 2546 SDs, 0 SdLazy, 1427 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2506 GetRequests, 1743 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 18.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=41, 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: 0.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 19.5s InterpolantComputationTime, 4338 NumberOfCodeBlocks, 4338 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 4156 ConstructedInterpolants, 0 QuantifiedInterpolants, 815788 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3913 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...