./Ultimate.py --spec /storage/repos/svcomp/c/properties/no-overflow.prp --file /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-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-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-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 85017c4a5a64f245bd703090448e8d5785d54b75 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-91b1670 [2018-11-28 23:07:51,658 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 23:07:51,659 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 23:07:51,671 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 23:07:51,671 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 23:07:51,672 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 23:07:51,674 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 23:07:51,676 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 23:07:51,678 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 23:07:51,679 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 23:07:51,680 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 23:07:51,680 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 23:07:51,681 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 23:07:51,682 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 23:07:51,683 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 23:07:51,684 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 23:07:51,685 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 23:07:51,687 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 23:07:51,689 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 23:07:51,691 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 23:07:51,692 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 23:07:51,694 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 23:07:51,696 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 23:07:51,697 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 23:07:51,697 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 23:07:51,698 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 23:07:51,699 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 23:07:51,700 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 23:07:51,701 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 23:07:51,702 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 23:07:51,703 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 23:07:51,703 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 23:07:51,704 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 23:07:51,704 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 23:07:51,705 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 23:07:51,706 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 23:07:51,707 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2018-11-28 23:07:51,722 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 23:07:51,723 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 23:07:51,724 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-28 23:07:51,724 INFO L133 SettingsManager]: * ... calls to implemented procedures=ONLY_FOR_CONCURRENT_PROGRAMS [2018-11-28 23:07:51,724 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 23:07:51,725 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 23:07:51,725 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 23:07:51,725 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 23:07:51,725 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 23:07:51,725 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 23:07:51,725 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 23:07:51,727 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-28 23:07:51,727 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-28 23:07:51,727 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-28 23:07:51,727 INFO L133 SettingsManager]: * Check absence of signed integer overflows=true [2018-11-28 23:07:51,728 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 23:07:51,728 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 23:07:51,728 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-28 23:07:51,729 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 23:07:51,729 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 23:07:51,729 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-28 23:07:51,729 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-28 23:07:51,729 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-28 23:07:51,730 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 23:07:51,730 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-28 23:07:51,730 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-28 23:07:51,730 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 23:07:51,730 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-28 23:07:51,732 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-28 23:07:51,732 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 -> 85017c4a5a64f245bd703090448e8d5785d54b75 [2018-11-28 23:07:51,767 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 23:07:51,780 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 23:07:51,784 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 23:07:51,786 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 23:07:51,786 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 23:07:51,788 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-28 23:07:51,854 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075b73a16/28a96372b5f242758a3ee003693a22c0/FLAG73eeea8dc [2018-11-28 23:07:52,361 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 23:07:52,362 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-28 23:07:52,370 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075b73a16/28a96372b5f242758a3ee003693a22c0/FLAG73eeea8dc [2018-11-28 23:07:52,705 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/075b73a16/28a96372b5f242758a3ee003693a22c0 [2018-11-28 23:07:52,709 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 23:07:52,710 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 23:07:52,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 23:07:52,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 23:07:52,720 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 23:07:52,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:52,725 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afc2783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52, skipping insertion in model container [2018-11-28 23:07:52,725 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:52,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 23:07:52,753 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 23:07:52,942 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:07:52,947 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 23:07:52,966 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 23:07:52,982 INFO L195 MainTranslator]: Completed translation [2018-11-28 23:07:52,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52 WrapperNode [2018-11-28 23:07:52,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 23:07:52,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 23:07:52,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 23:07:52,984 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 23:07:52,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:52,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,007 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 23:07:53,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 23:07:53,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 23:07:53,008 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 23:07:53,018 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,019 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (1/1) ... [2018-11-28 23:07:53,042 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 23:07:53,043 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 23:07:53,043 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 23:07:53,043 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 23:07:53,044 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (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 23:07:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-28 23:07:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-28 23:07:53,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 23:07:53,186 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 23:07:53,187 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-28 23:07:53,187 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-28 23:07:53,387 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 23:07:53,388 INFO L280 CfgBuilder]: Removed 1 assue(true) statements. [2018-11-28 23:07:53,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:07:53 BoogieIcfgContainer [2018-11-28 23:07:53,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 23:07:53,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-28 23:07:53,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-28 23:07:53,393 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-28 23:07:53,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 11:07:52" (1/3) ... [2018-11-28 23:07:53,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797949a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:07:53, skipping insertion in model container [2018-11-28 23:07:53,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:07:52" (2/3) ... [2018-11-28 23:07:53,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797949a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 11:07:53, skipping insertion in model container [2018-11-28 23:07:53,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:07:53" (3/3) ... [2018-11-28 23:07:53,396 INFO L112 eAbstractionObserver]: Analyzing ICFG BrockschmidtCookFuhs-CAV2013-Introduction_true-termination_true-no-overflow.c [2018-11-28 23:07:53,405 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-28 23:07:53,412 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2018-11-28 23:07:53,429 INFO L257 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2018-11-28 23:07:53,460 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 23:07:53,461 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-28 23:07:53,461 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-28 23:07:53,461 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-28 23:07:53,461 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 23:07:53,461 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 23:07:53,461 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-28 23:07:53,461 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 23:07:53,462 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-28 23:07:53,481 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-11-28 23:07:53,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-28 23:07:53,487 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:53,488 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:53,491 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:53,497 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:53,497 INFO L82 PathProgramCache]: Analyzing trace with hash -37667266, now seen corresponding path program 1 times [2018-11-28 23:07:53,499 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:53,500 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:53,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:53,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:53,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:53,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:53,682 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 23:07:53,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:07:53,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:07:53,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:07:53,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:07:53,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:53,734 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2018-11-28 23:07:53,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:53,895 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-11-28 23:07:53,895 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:07:53,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-28 23:07:53,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:53,906 INFO L225 Difference]: With dead ends: 31 [2018-11-28 23:07:53,907 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 23:07:53,910 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 23:07:53,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 23:07:53,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-11-28 23:07:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 23:07:53,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-28 23:07:53,949 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 7 [2018-11-28 23:07:53,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:53,950 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-28 23:07:53,950 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:07:53,950 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-28 23:07:53,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-11-28 23:07:53,950 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:53,951 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:53,951 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:53,951 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:53,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1167685199, now seen corresponding path program 1 times [2018-11-28 23:07:53,952 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:53,952 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:53,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:53,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:53,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:53,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:54,032 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 23:07:54,032 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:07:54,032 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 23:07:54,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-28 23:07:54,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 23:07:54,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 23:07:54,035 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 4 states. [2018-11-28 23:07:54,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:54,178 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-11-28 23:07:54,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-28 23:07:54,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2018-11-28 23:07:54,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:54,180 INFO L225 Difference]: With dead ends: 21 [2018-11-28 23:07:54,180 INFO L226 Difference]: Without dead ends: 19 [2018-11-28 23:07:54,182 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-28 23:07:54,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-28 23:07:54,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-11-28 23:07:54,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-11-28 23:07:54,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-11-28 23:07:54,186 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 8 [2018-11-28 23:07:54,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:54,187 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-11-28 23:07:54,187 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-28 23:07:54,187 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-11-28 23:07:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-28 23:07:54,188 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:54,188 INFO L402 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:54,188 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:54,188 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:54,188 INFO L82 PathProgramCache]: Analyzing trace with hash -1159010413, now seen corresponding path program 1 times [2018-11-28 23:07:54,189 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:54,189 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:54,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:54,190 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:54,190 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:54,217 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 23:07:54,217 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 23:07:54,217 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 23:07:54,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-28 23:07:54,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 23:07:54,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 23:07:54,219 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 3 states. [2018-11-28 23:07:54,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:54,293 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-28 23:07:54,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 23:07:54,294 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2018-11-28 23:07:54,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:54,295 INFO L225 Difference]: With dead ends: 18 [2018-11-28 23:07:54,295 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 23:07:54,296 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 23:07:54,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 23:07:54,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-28 23:07:54,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-28 23:07:54,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2018-11-28 23:07:54,300 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2018-11-28 23:07:54,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:54,300 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2018-11-28 23:07:54,300 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-28 23:07:54,300 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2018-11-28 23:07:54,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-28 23:07:54,301 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:54,301 INFO L402 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:54,302 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:54,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:54,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1412475851, now seen corresponding path program 1 times [2018-11-28 23:07:54,302 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:54,302 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:54,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:54,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:54,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:54,474 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 23:07:54,474 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:07:54,474 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 23:07:54,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:54,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:54,520 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:07:54,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:07:54,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 23:07:54,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 8 [2018-11-28 23:07:54,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-28 23:07:54,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-28 23:07:54,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-11-28 23:07:54,717 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2018-11-28 23:07:54,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:54,997 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-11-28 23:07:54,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:07:54,998 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 12 [2018-11-28 23:07:54,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:54,998 INFO L225 Difference]: With dead ends: 18 [2018-11-28 23:07:54,999 INFO L226 Difference]: Without dead ends: 17 [2018-11-28 23:07:54,999 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-28 23:07:55,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-28 23:07:55,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2018-11-28 23:07:55,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-28 23:07:55,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-28 23:07:55,005 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-11-28 23:07:55,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:55,005 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-28 23:07:55,005 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-28 23:07:55,005 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-28 23:07:55,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-28 23:07:55,006 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:55,006 INFO L402 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:55,006 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:55,007 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:55,007 INFO L82 PathProgramCache]: Analyzing trace with hash -837078374, now seen corresponding path program 1 times [2018-11-28 23:07:55,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:55,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:55,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:55,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:55,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:07:55,062 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:07:55,062 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 23:07:55,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:55,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:55,083 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:07:55,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 23:07:55,249 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-28 23:07:55,250 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2018-11-28 23:07:55,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-28 23:07:55,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-28 23:07:55,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-28 23:07:55,251 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-11-28 23:07:55,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:55,493 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2018-11-28 23:07:55,495 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-28 23:07:55,495 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2018-11-28 23:07:55,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:55,496 INFO L225 Difference]: With dead ends: 27 [2018-11-28 23:07:55,496 INFO L226 Difference]: Without dead ends: 25 [2018-11-28 23:07:55,497 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2018-11-28 23:07:55,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-11-28 23:07:55,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-11-28 23:07:55,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-11-28 23:07:55,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2018-11-28 23:07:55,502 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 13 [2018-11-28 23:07:55,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:55,502 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2018-11-28 23:07:55,502 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-28 23:07:55,503 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2018-11-28 23:07:55,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-28 23:07:55,503 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:55,504 INFO L402 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:55,504 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:55,504 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:55,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1754295689, now seen corresponding path program 1 times [2018-11-28 23:07:55,505 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:55,505 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:55,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:55,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:55,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:55,855 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 23:07:55,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:07:55,856 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 23:07:55,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:55,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:55,906 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:07:55,913 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 23:07:55,936 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:07:55,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2018-11-28 23:07:55,937 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-28 23:07:55,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-28 23:07:55,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:07:55,939 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2018-11-28 23:07:55,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:55,996 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2018-11-28 23:07:55,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-28 23:07:55,998 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2018-11-28 23:07:55,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:55,999 INFO L225 Difference]: With dead ends: 32 [2018-11-28 23:07:55,999 INFO L226 Difference]: Without dead ends: 31 [2018-11-28 23:07:55,999 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-28 23:07:56,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-11-28 23:07:56,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2018-11-28 23:07:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2018-11-28 23:07:56,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2018-11-28 23:07:56,005 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 24 [2018-11-28 23:07:56,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:56,005 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2018-11-28 23:07:56,007 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-28 23:07:56,007 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2018-11-28 23:07:56,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-28 23:07:56,008 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:56,008 INFO L402 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:56,008 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:56,008 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:56,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1485878944, now seen corresponding path program 2 times [2018-11-28 23:07:56,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:56,011 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:56,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:56,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 23:07:56,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:56,125 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 23:07:56,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:07:56,126 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 23:07:56,142 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-28 23:07:56,156 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-28 23:07:56,156 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:07:56,159 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:07:56,167 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 23:07:56,192 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:07:56,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2018-11-28 23:07:56,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-28 23:07:56,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-28 23:07:56,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:07:56,193 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2018-11-28 23:07:56,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:56,283 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2018-11-28 23:07:56,283 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-28 23:07:56,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2018-11-28 23:07:56,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:56,285 INFO L225 Difference]: With dead ends: 37 [2018-11-28 23:07:56,286 INFO L226 Difference]: Without dead ends: 36 [2018-11-28 23:07:56,287 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-11-28 23:07:56,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2018-11-28 23:07:56,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2018-11-28 23:07:56,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-11-28 23:07:56,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2018-11-28 23:07:56,293 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 29 [2018-11-28 23:07:56,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:56,293 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2018-11-28 23:07:56,293 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-28 23:07:56,294 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2018-11-28 23:07:56,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-11-28 23:07:56,295 INFO L394 BasicCegarLoop]: Found error trace [2018-11-28 23:07:56,295 INFO L402 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1, 1, 1, 1, 1] [2018-11-28 23:07:56,295 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2018-11-28 23:07:56,295 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 23:07:56,296 INFO L82 PathProgramCache]: Analyzing trace with hash -563446761, now seen corresponding path program 3 times [2018-11-28 23:07:56,296 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 23:07:56,296 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 23:07:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:56,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-28 23:07:56,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 23:07:56,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 23:07:56,465 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 23:07:56,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 23:07:56,465 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 23:07:56,475 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-28 23:07:56,489 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2018-11-28 23:07:56,489 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-28 23:07:56,492 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 23:07:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 40 proven. 21 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-28 23:07:56,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 23:07:56,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 14 [2018-11-28 23:07:56,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-28 23:07:56,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-28 23:07:56,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-11-28 23:07:56,896 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2018-11-28 23:07:58,238 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2018-11-28 23:07:58,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 23:07:58,240 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2018-11-28 23:07:58,240 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-11-28 23:07:58,240 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2018-11-28 23:07:58,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-28 23:07:58,241 INFO L225 Difference]: With dead ends: 42 [2018-11-28 23:07:58,241 INFO L226 Difference]: Without dead ends: 0 [2018-11-28 23:07:58,243 INFO L631 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=384, Invalid=876, Unknown=0, NotChecked=0, Total=1260 [2018-11-28 23:07:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-28 23:07:58,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-28 23:07:58,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-28 23:07:58,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 23:07:58,244 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-11-28 23:07:58,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-28 23:07:58,244 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 23:07:58,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-28 23:07:58,245 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-28 23:07:58,245 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-28 23:07:58,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-28 23:07:58,368 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-28 23:07:58,368 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:07:58,368 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-28 23:07:58,368 INFO L451 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-28 23:07:58,368 INFO L451 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-28 23:07:58,368 INFO L448 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-28 23:07:58,369 INFO L451 ceAbstractionStarter]: At program point mainENTRY(lines 14 23) the Hoare annotation is: true [2018-11-28 23:07:58,369 INFO L448 ceAbstractionStarter]: For program point mainEXIT(lines 14 23) no Hoare annotation was computed. [2018-11-28 23:07:58,369 INFO L448 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-11-28 23:07:58,369 INFO L448 ceAbstractionStarter]: For program point L19(line 19) no Hoare annotation was computed. [2018-11-28 23:07:58,369 INFO L448 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-11-28 23:07:58,369 INFO L448 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2018-11-28 23:07:58,369 INFO L444 ceAbstractionStarter]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (and (<= main_~y~0 2147483647) (exists ((v_main_~y~0_23 Int)) (and (<= (+ main_~x~0 (* 2 v_main_~y~0_23)) 2147483648) (<= main_~y~0 (+ v_main_~y~0_23 1)))) (<= 2 main_~y~0)) (and (<= 1 main_~y~0) (<= (+ main_~x~0 main_~y~0) 2147483648) (<= main_~y~0 1))) [2018-11-28 23:07:58,369 INFO L448 ceAbstractionStarter]: For program point L18-3(lines 18 21) no Hoare annotation was computed. [2018-11-28 23:07:58,369 INFO L448 ceAbstractionStarter]: For program point mainFINAL(lines 14 23) no Hoare annotation was computed. [2018-11-28 23:07:58,370 INFO L448 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-28 23:07:58,370 INFO L448 ceAbstractionStarter]: For program point mainErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 19) no Hoare annotation was computed. [2018-11-28 23:07:58,370 INFO L448 ceAbstractionStarter]: For program point mainErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 23:07:58,370 INFO L448 ceAbstractionStarter]: For program point mainErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 20) no Hoare annotation was computed. [2018-11-28 23:07:58,376 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] [2018-11-28 23:07:58,377 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] [2018-11-28 23:07:58,385 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] [2018-11-28 23:07:58,385 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] [2018-11-28 23:07:58,387 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 11:07:58 BoogieIcfgContainer [2018-11-28 23:07:58,388 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-28 23:07:58,388 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 23:07:58,388 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 23:07:58,388 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 23:07:58,389 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:07:53" (3/4) ... [2018-11-28 23:07:58,392 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-11-28 23:07:58,399 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-11-28 23:07:58,400 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-11-28 23:07:58,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2018-11-28 23:07:58,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2018-11-28 23:07:58,404 INFO L905 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-11-28 23:07:58,432 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((y <= 2147483647 && (\exists v_main_~y~0_23 : int :: x + 2 * v_main_~y~0_23 <= 2147483648 && y <= v_main_~y~0_23 + 1)) && 2 <= y) || ((1 <= y && x + y <= 2147483648) && y <= 1) [2018-11-28 23:07:58,447 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2018-11-28 23:07:58,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 23:07:58,448 INFO L168 Benchmark]: Toolchain (without parser) took 5738.88 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 952.7 MB in the beginning and 847.6 MB in the end (delta: 105.1 MB). Peak memory consumption was 230.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:58,449 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:07:58,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.57 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:58,451 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.58 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:07:58,451 INFO L168 Benchmark]: Boogie Preprocessor took 35.28 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:07:58,452 INFO L168 Benchmark]: RCFGBuilder took 345.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:58,453 INFO L168 Benchmark]: TraceAbstraction took 4998.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 847.6 MB in the end (delta: 255.4 MB). Peak memory consumption was 255.4 MB. Max. memory is 11.5 GB. [2018-11-28 23:07:58,454 INFO L168 Benchmark]: Witness Printer took 59.17 ms. Allocated memory is still 1.2 GB. Free memory is still 847.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 23:07:58,458 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 269.57 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 942.0 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 23.58 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 35.28 ms. Allocated memory is still 1.0 GB. Free memory is still 942.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 345.85 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 125.3 MB). Free memory was 942.0 MB in the beginning and 1.1 GB in the end (delta: -167.9 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4998.02 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 847.6 MB in the end (delta: 255.4 MB). Peak memory consumption was 255.4 MB. Max. memory is 11.5 GB. * Witness Printer took 59.17 ms. Allocated memory is still 1.2 GB. Free memory is still 847.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 19]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 20]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant [2018-11-28 23:07:58,466 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] [2018-11-28 23:07:58,466 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] [2018-11-28 23:07:58,467 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] [2018-11-28 23:07:58,467 WARN L416 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_23,QUANTIFIED] Derived loop invariant: ((y <= 2147483647 && (\exists v_main_~y~0_23 : int :: x + 2 * v_main_~y~0_23 <= 2147483648 && y <= v_main_~y~0_23 + 1)) && 2 <= y) || ((1 <= y && x + y <= 2147483648) && y <= 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 4 error locations. SAFE Result, 4.9s OverallTime, 8 OverallIterations, 6 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 59 SDtfs, 100 SDslu, 145 SDs, 0 SdLazy, 193 SolverSat, 57 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 169 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=7, 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: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 5 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 12 NumberOfFragments, 38 HoareAnnotationTreeSize, 5 FomulaSimplifications, 141 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 249 NumberOfCodeBlocks, 244 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 236 ConstructedInterpolants, 4 QuantifiedInterpolants, 16290 SizeOfPredicates, 2 NumberOfNonLiveVariables, 220 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 54/296 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...