./Ultimate.py --spec ../../../trunk/examples/svcomp/ReachSafety.prp --file ../../../trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i --full-output --rcfgbuilder.size.of.a.code.block SingleStatement --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0210da8c Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i ../../../trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1e17546c38a51643b6e392ce04436e766214299e --rcfgbuilder.size.of.a.code.block SingleStatement .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0210da8 [2018-10-22 09:54:18,570 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 09:54:18,572 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 09:54:18,589 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 09:54:18,589 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 09:54:18,590 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 09:54:18,591 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 09:54:18,593 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 09:54:18,594 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 09:54:18,595 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 09:54:18,596 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 09:54:18,596 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 09:54:18,597 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 09:54:18,598 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 09:54:18,599 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 09:54:18,600 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 09:54:18,601 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 09:54:18,604 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 09:54:18,606 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 09:54:18,611 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 09:54:18,612 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 09:54:18,615 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 09:54:18,617 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-22 09:54:18,617 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-22 09:54:18,617 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-22 09:54:18,619 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-22 09:54:18,620 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-22 09:54:18,621 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-22 09:54:18,622 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-22 09:54:18,623 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-22 09:54:18,623 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-22 09:54:18,624 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-22 09:54:18,626 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-22 09:54:18,626 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-22 09:54:18,628 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-22 09:54:18,629 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-22 09:54:18,629 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-10-22 09:54:18,659 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 09:54:18,661 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 09:54:18,662 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 09:54:18,663 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-22 09:54:18,663 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-22 09:54:18,663 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-22 09:54:18,663 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-22 09:54:18,663 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-22 09:54:18,664 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-22 09:54:18,664 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-22 09:54:18,664 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-22 09:54:18,665 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 09:54:18,665 INFO L133 SettingsManager]: * sizeof long=4 [2018-10-22 09:54:18,665 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 09:54:18,666 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-10-22 09:54:18,667 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 09:54:18,667 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 09:54:18,667 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 09:54:18,667 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 09:54:18,667 INFO L133 SettingsManager]: * sizeof long double=12 [2018-10-22 09:54:18,667 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 09:54:18,668 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 09:54:18,668 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 09:54:18,668 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 09:54:18,668 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 09:54:18,668 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 09:54:18,669 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 09:54:18,670 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 09:54:18,670 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 09:54:18,670 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 09:54:18,671 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-22 09:54:18,671 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 09:54:18,671 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 09:54:18,671 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 09:54:18,671 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-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 ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1e17546c38a51643b6e392ce04436e766214299e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement [2018-10-22 09:54:18,748 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 09:54:18,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 09:54:18,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 09:54:18,770 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 09:54:18,771 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 09:54:18,771 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-10-22 09:54:18,833 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e1cec65a/a081353854994c94ae51dd06f63bdc03/FLAG9572c0440 [2018-10-22 09:54:19,312 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 09:54:19,313 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-10-22 09:54:19,320 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e1cec65a/a081353854994c94ae51dd06f63bdc03/FLAG9572c0440 [2018-10-22 09:54:19,342 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/9e1cec65a/a081353854994c94ae51dd06f63bdc03 [2018-10-22 09:54:19,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 09:54:19,349 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-22 09:54:19,352 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 09:54:19,352 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 09:54:19,358 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 09:54:19,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,363 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f92ff23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19, skipping insertion in model container [2018-10-22 09:54:19,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 09:54:19,406 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 09:54:19,594 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:54:19,597 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 09:54:19,614 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 09:54:19,627 INFO L193 MainTranslator]: Completed translation [2018-10-22 09:54:19,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19 WrapperNode [2018-10-22 09:54:19,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 09:54:19,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 09:54:19,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 09:54:19,628 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 09:54:19,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,644 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 09:54:19,644 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 09:54:19,645 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 09:54:19,645 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 09:54:19,653 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,653 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,654 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,662 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,662 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... [2018-10-22 09:54:19,664 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 09:54:19,664 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 09:54:19,664 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 09:54:19,665 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 09:54:19,665 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-22 09:54:19,783 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-22 09:54:19,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-22 09:54:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 09:54:19,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 09:54:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-22 09:54:19,784 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-22 09:54:19,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-10-22 09:54:19,784 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-10-22 09:54:20,212 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 09:54:20,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:54:20 BoogieIcfgContainer [2018-10-22 09:54:20,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 09:54:20,214 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 09:54:20,214 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 09:54:20,217 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 09:54:20,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 09:54:19" (1/3) ... [2018-10-22 09:54:20,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7d3cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:54:20, skipping insertion in model container [2018-10-22 09:54:20,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:54:19" (2/3) ... [2018-10-22 09:54:20,219 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e7d3cad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 09:54:20, skipping insertion in model container [2018-10-22 09:54:20,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:54:20" (3/3) ... [2018-10-22 09:54:20,221 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007b_true-unreach-call_true-termination.c.i [2018-10-22 09:54:20,231 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 09:54:20,239 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 09:54:20,256 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 09:54:20,290 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 09:54:20,291 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 09:54:20,291 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 09:54:20,291 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 09:54:20,292 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 09:54:20,292 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 09:54:20,292 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 09:54:20,292 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 09:54:20,292 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 09:54:20,311 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2018-10-22 09:54:20,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-22 09:54:20,317 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:20,318 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:54:20,321 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:20,327 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:20,327 INFO L82 PathProgramCache]: Analyzing trace with hash -392219330, now seen corresponding path program 1 times [2018-10-22 09:54:20,330 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:20,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:20,379 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:20,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:20,380 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:20,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:20,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:54:20,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:54:20,445 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 09:54:20,445 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:20,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 09:54:20,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 09:54:20,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 09:54:20,468 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2018-10-22 09:54:20,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:20,493 INFO L93 Difference]: Finished difference Result 43 states and 50 transitions. [2018-10-22 09:54:20,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 09:54:20,494 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2018-10-22 09:54:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:20,508 INFO L225 Difference]: With dead ends: 43 [2018-10-22 09:54:20,508 INFO L226 Difference]: Without dead ends: 25 [2018-10-22 09:54:20,513 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 09:54:20,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-22 09:54:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2018-10-22 09:54:20,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-10-22 09:54:20,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2018-10-22 09:54:20,561 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 14 [2018-10-22 09:54:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:20,562 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2018-10-22 09:54:20,562 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 09:54:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2018-10-22 09:54:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-22 09:54:20,563 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:20,564 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:54:20,564 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:20,564 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:20,564 INFO L82 PathProgramCache]: Analyzing trace with hash 149345995, now seen corresponding path program 1 times [2018-10-22 09:54:20,565 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:20,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:20,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:20,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:20,567 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:54:20,861 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:54:20,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-22 09:54:20,861 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:20,864 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-22 09:54:20,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-22 09:54:20,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-22 09:54:20,865 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2018-10-22 09:54:20,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:20,964 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2018-10-22 09:54:20,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 09:54:20,965 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-10-22 09:54:20,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:20,967 INFO L225 Difference]: With dead ends: 41 [2018-10-22 09:54:20,967 INFO L226 Difference]: Without dead ends: 39 [2018-10-22 09:54:20,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-22 09:54:20,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2018-10-22 09:54:20,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 36. [2018-10-22 09:54:20,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2018-10-22 09:54:20,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2018-10-22 09:54:20,985 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 15 [2018-10-22 09:54:20,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:20,986 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2018-10-22 09:54:20,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-22 09:54:20,986 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2018-10-22 09:54:20,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-22 09:54:20,991 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:20,991 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:54:20,991 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:20,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:20,993 INFO L82 PathProgramCache]: Analyzing trace with hash 845286683, now seen corresponding path program 1 times [2018-10-22 09:54:20,994 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:20,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:20,997 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:20,997 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:20,997 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:21,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:54:21,187 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:54:21,187 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:54:21,189 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-10-22 09:54:21,192 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [12], [16], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54] [2018-10-22 09:54:21,249 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:54:21,249 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:54:21,400 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 09:54:21,404 INFO L272 AbstractInterpreter]: Visited 18 different actions 22 times. Never merged. Never widened. Never found a fixpoint. Largest state had 4 variables. [2018-10-22 09:54:21,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:21,413 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 09:54:21,530 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 55.95% of their original sizes. [2018-10-22 09:54:21,530 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 09:54:21,966 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 09:54:21,968 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:54:21,968 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2018-10-22 09:54:21,968 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:21,969 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-22 09:54:21,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-22 09:54:21,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-10-22 09:54:21,970 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 9 states. [2018-10-22 09:54:22,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:22,500 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2018-10-22 09:54:22,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-22 09:54:22,501 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2018-10-22 09:54:22,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:22,504 INFO L225 Difference]: With dead ends: 57 [2018-10-22 09:54:22,504 INFO L226 Difference]: Without dead ends: 45 [2018-10-22 09:54:22,505 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-10-22 09:54:22,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-22 09:54:22,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2018-10-22 09:54:22,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-10-22 09:54:22,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2018-10-22 09:54:22,513 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 20 [2018-10-22 09:54:22,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:22,513 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2018-10-22 09:54:22,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-22 09:54:22,513 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2018-10-22 09:54:22,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 09:54:22,514 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:22,515 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:54:22,515 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:22,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:22,515 INFO L82 PathProgramCache]: Analyzing trace with hash 1580048438, now seen corresponding path program 1 times [2018-10-22 09:54:22,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:22,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:22,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:22,517 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:22,517 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:22,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 09:54:22,689 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:54:22,689 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:54:22,689 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 23 with the following transitions: [2018-10-22 09:54:22,689 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [12], [16], [18], [19], [22], [23], [24], [29], [37], [40], [42], [48], [49], [50], [52] [2018-10-22 09:54:22,692 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:54:22,693 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:54:22,860 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 09:54:22,860 INFO L272 AbstractInterpreter]: Visited 20 different actions 108 times. Merged at 8 different actions 64 times. Widened at 1 different actions 4 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-22 09:54:22,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:22,900 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 09:54:22,939 INFO L232 lantSequenceWeakener]: Weakened 11 states. On average, predicates are now at 38.64% of their original sizes. [2018-10-22 09:54:22,939 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 09:54:23,278 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 09:54:23,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:54:23,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-10-22 09:54:23,278 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:23,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 09:54:23,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 09:54:23,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-10-22 09:54:23,281 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 13 states. [2018-10-22 09:54:24,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:24,753 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2018-10-22 09:54:24,753 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-22 09:54:24,753 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2018-10-22 09:54:24,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:24,756 INFO L225 Difference]: With dead ends: 62 [2018-10-22 09:54:24,756 INFO L226 Difference]: Without dead ends: 60 [2018-10-22 09:54:24,756 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2018-10-22 09:54:24,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-10-22 09:54:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 41. [2018-10-22 09:54:24,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-10-22 09:54:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2018-10-22 09:54:24,766 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 22 [2018-10-22 09:54:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:24,766 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2018-10-22 09:54:24,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 09:54:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2018-10-22 09:54:24,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-10-22 09:54:24,768 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:24,768 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:54:24,768 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:24,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:24,769 INFO L82 PathProgramCache]: Analyzing trace with hash 512611884, now seen corresponding path program 1 times [2018-10-22 09:54:24,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:24,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:24,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:24,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:24,770 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:24,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:24,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 09:54:24,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:54:24,871 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:54:24,871 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 27 with the following transitions: [2018-10-22 09:54:24,872 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [12], [16], [18], [19], [26], [27], [29], [37], [40], [42], [45], [47], [48], [49], [50], [52], [53], [54] [2018-10-22 09:54:24,874 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:54:24,875 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:54:24,955 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 09:54:24,955 INFO L272 AbstractInterpreter]: Visited 23 different actions 153 times. Merged at 8 different actions 56 times. Widened at 1 different actions 3 times. Found 1 fixpoints after 1 different actions. Largest state had 5 variables. [2018-10-22 09:54:24,971 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:24,971 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 09:54:25,003 INFO L232 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 52.08% of their original sizes. [2018-10-22 09:54:25,003 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 09:54:25,284 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 09:54:25,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:54:25,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2018-10-22 09:54:25,285 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:25,286 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 09:54:25,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 09:54:25,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2018-10-22 09:54:25,287 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 12 states. [2018-10-22 09:54:25,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:25,858 INFO L93 Difference]: Finished difference Result 71 states and 80 transitions. [2018-10-22 09:54:25,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-22 09:54:25,858 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2018-10-22 09:54:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:25,859 INFO L225 Difference]: With dead ends: 71 [2018-10-22 09:54:25,860 INFO L226 Difference]: Without dead ends: 58 [2018-10-22 09:54:25,860 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2018-10-22 09:54:25,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-10-22 09:54:25,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2018-10-22 09:54:25,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-10-22 09:54:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2018-10-22 09:54:25,870 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 26 [2018-10-22 09:54:25,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:25,871 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2018-10-22 09:54:25,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 09:54:25,871 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2018-10-22 09:54:25,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-22 09:54:25,873 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:25,874 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:54:25,875 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:25,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:25,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1121222561, now seen corresponding path program 1 times [2018-10-22 09:54:25,875 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:25,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:25,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:25,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:25,878 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:25,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:25,967 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-22 09:54:25,967 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 09:54:25,967 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-22 09:54:25,968 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:25,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-22 09:54:25,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-22 09:54:25,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-10-22 09:54:25,970 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 6 states. [2018-10-22 09:54:26,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:26,054 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2018-10-22 09:54:26,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 09:54:26,055 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2018-10-22 09:54:26,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:26,056 INFO L225 Difference]: With dead ends: 59 [2018-10-22 09:54:26,056 INFO L226 Difference]: Without dead ends: 45 [2018-10-22 09:54:26,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-22 09:54:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2018-10-22 09:54:26,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 37. [2018-10-22 09:54:26,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-10-22 09:54:26,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2018-10-22 09:54:26,063 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 33 [2018-10-22 09:54:26,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:26,063 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2018-10-22 09:54:26,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-22 09:54:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2018-10-22 09:54:26,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-10-22 09:54:26,065 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 09:54:26,065 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 09:54:26,065 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 09:54:26,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:26,066 INFO L82 PathProgramCache]: Analyzing trace with hash -409412522, now seen corresponding path program 1 times [2018-10-22 09:54:26,066 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-22 09:54:26,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:26,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 09:54:26,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 09:54:26,067 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-22 09:54:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 09:54:26,168 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-10-22 09:54:26,168 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 09:54:26,168 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-22 09:54:26,169 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 35 with the following transitions: [2018-10-22 09:54:26,169 INFO L202 CegarAbsIntRunner]: [0], [4], [5], [6], [7], [8], [12], [16], [18], [19], [22], [23], [24], [26], [27], [29], [37], [40], [42], [48], [49], [50], [52] [2018-10-22 09:54:26,170 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-22 09:54:26,171 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-22 09:54:26,280 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-22 09:54:26,280 INFO L272 AbstractInterpreter]: Visited 22 different actions 186 times. Merged at 10 different actions 116 times. Widened at 1 different actions 6 times. Found 14 fixpoints after 2 different actions. Largest state had 5 variables. [2018-10-22 09:54:26,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 09:54:26,319 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-22 09:54:26,355 INFO L232 lantSequenceWeakener]: Weakened 18 states. On average, predicates are now at 36.57% of their original sizes. [2018-10-22 09:54:26,355 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-22 09:54:26,668 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-22 09:54:26,668 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-22 09:54:26,668 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [7] total 19 [2018-10-22 09:54:26,669 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-22 09:54:26,669 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-22 09:54:26,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-22 09:54:26,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-10-22 09:54:26,670 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 14 states. [2018-10-22 09:54:27,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 09:54:27,367 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2018-10-22 09:54:27,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-22 09:54:27,367 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2018-10-22 09:54:27,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 09:54:27,368 INFO L225 Difference]: With dead ends: 48 [2018-10-22 09:54:27,368 INFO L226 Difference]: Without dead ends: 0 [2018-10-22 09:54:27,370 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2018-10-22 09:54:27,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-22 09:54:27,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-22 09:54:27,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-22 09:54:27,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-22 09:54:27,371 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2018-10-22 09:54:27,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 09:54:27,371 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-22 09:54:27,371 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-22 09:54:27,371 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-22 09:54:27,371 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-22 09:54:27,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-22 09:54:27,413 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-22 09:54:27,433 WARN L250 erpolLogProxyWrapper]: Already inconsistent. [2018-10-22 09:54:28,107 WARN L179 SmtUtils]: Spent 560.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 29 [2018-10-22 09:54:28,412 WARN L179 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 27 [2018-10-22 09:54:28,538 WARN L179 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 29 [2018-10-22 09:54:28,541 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-10-22 09:54:28,541 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:54:28,541 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-22 09:54:28,542 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-10-22 09:54:28,542 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-10-22 09:54:28,542 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-22 09:54:28,542 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-10-22 09:54:28,542 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-10-22 09:54:28,542 INFO L425 ceAbstractionStarter]: For program point L15(line 15) no Hoare annotation was computed. [2018-10-22 09:54:28,542 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 17) no Hoare annotation was computed. [2018-10-22 09:54:28,542 INFO L425 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-10-22 09:54:28,543 INFO L425 ceAbstractionStarter]: For program point L15-2(line 15) no Hoare annotation was computed. [2018-10-22 09:54:28,543 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-10-22 09:54:28,543 INFO L425 ceAbstractionStarter]: For program point L13-1(line 13) no Hoare annotation was computed. [2018-10-22 09:54:28,543 INFO L425 ceAbstractionStarter]: For program point L13-2(line 13) no Hoare annotation was computed. [2018-10-22 09:54:28,543 INFO L425 ceAbstractionStarter]: For program point L15-4(line 15) no Hoare annotation was computed. [2018-10-22 09:54:28,543 INFO L425 ceAbstractionStarter]: For program point L15-5(lines 15 17) no Hoare annotation was computed. [2018-10-22 09:54:28,543 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-10-22 09:54:28,543 INFO L421 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (<= main_~x~0 (+ main_~n~0 2147483648)))) (or (let ((.cse1 (* 2 main_~x~0))) (and .cse0 (<= (* 2 main_~n~0) 4294967294) (<= .cse1 4294967294) (<= 0 .cse1) (<= (+ main_~m~0 1) main_~n~0))) (let ((.cse2 (+ main_~m~0 2147483647))) (and .cse0 (= main_~m~0 0) (<= main_~n~0 .cse2) (<= main_~x~0 .cse2) (<= 0 (+ main_~x~0 main_~m~0)))))) [2018-10-22 09:54:28,544 INFO L425 ceAbstractionStarter]: For program point L16(line 16) no Hoare annotation was computed. [2018-10-22 09:54:28,544 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 19) no Hoare annotation was computed. [2018-10-22 09:54:28,544 INFO L425 ceAbstractionStarter]: For program point L12(line 12) no Hoare annotation was computed. [2018-10-22 09:54:28,544 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (or (let ((.cse0 (+ main_~m~0 2147483647))) (and (<= main_~x~0 (+ main_~n~0 2147483648)) (= main_~m~0 0) (<= main_~n~0 .cse0) (<= main_~x~0 .cse0) (<= 0 (+ main_~x~0 main_~m~0)))) (and (<= 0 (* 2 main_~m~0)) (<= (* 2 main_~n~0) 4294967294) (<= (* 2 main_~x~0) 4294967294) (<= main_~m~0 main_~x~0) (<= (+ main_~m~0 1) main_~n~0))) [2018-10-22 09:54:28,544 INFO L421 ceAbstractionStarter]: At program point L14-4(lines 14 19) the Hoare annotation is: (or (and (let ((.cse0 (* 2 main_~x~0))) (and (<= 0 main_~m~0) (<= (* 2 main_~n~0) 4294967294) (<= .cse0 4294967294) (<= 0 .cse0))) (<= (+ main_~m~0 1) main_~n~0)) (let ((.cse1 (+ main_~m~0 2147483647))) (and (<= main_~x~0 (+ main_~n~0 2147483648)) (= main_~m~0 0) (<= main_~n~0 .cse1) (<= main_~x~0 .cse1) (<= 0 (+ main_~x~0 main_~m~0))))) [2018-10-22 09:54:28,544 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-10-22 09:54:28,546 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-22 09:54:28,546 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:54:28,546 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-22 09:54:28,546 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-22 09:54:28,546 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-10-22 09:54:28,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 09:54:28 BoogieIcfgContainer [2018-10-22 09:54:28,558 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 09:54:28,558 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-22 09:54:28,558 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-22 09:54:28,559 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-22 09:54:28,559 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:54:20" (3/4) ... [2018-10-22 09:54:28,563 INFO L144 WitnessPrinter]: Generating witness for correct program [2018-10-22 09:54:28,569 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure ULTIMATE.init [2018-10-22 09:54:28,569 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure main [2018-10-22 09:54:28,569 INFO L333 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2018-10-22 09:54:28,573 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2018-10-22 09:54:28,573 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2018-10-22 09:54:28,574 INFO L846 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2018-10-22 09:54:28,619 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/witness.graphml [2018-10-22 09:54:28,619 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-22 09:54:28,620 INFO L168 Benchmark]: Toolchain (without parser) took 9271.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 206.6 MB). Free memory was 953.1 MB in the beginning and 1.0 GB in the end (delta: -69.9 MB). Peak memory consumption was 136.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:28,621 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:54:28,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.44 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.4 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:28,622 INFO L168 Benchmark]: Boogie Procedure Inliner took 16.27 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:54:28,623 INFO L168 Benchmark]: Boogie Preprocessor took 19.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:54:28,623 INFO L168 Benchmark]: RCFGBuilder took 548.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:28,624 INFO L168 Benchmark]: TraceAbstraction took 8344.23 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 96.2 MB). Peak memory consumption was 159.1 MB. Max. memory is 11.5 GB. [2018-10-22 09:54:28,625 INFO L168 Benchmark]: Witness Printer took 60.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-22 09:54:28,629 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 275.44 ms. Allocated memory is still 1.0 GB. Free memory was 953.1 MB in the beginning and 942.4 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 16.27 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.47 ms. Allocated memory is still 1.0 GB. Free memory is still 942.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 548.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.7 MB). Free memory was 942.4 MB in the beginning and 1.1 GB in the end (delta: -176.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 8344.23 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 62.9 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 96.2 MB). Peak memory consumption was 159.1 MB. Max. memory is 11.5 GB. * Witness Printer took 60.65 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((x <= n + 2147483648 && m == 0) && n <= m + 2147483647) && x <= m + 2147483647) && 0 <= x + m) || ((((0 <= 2 * m && 2 * n <= 4294967294) && 2 * x <= 4294967294) && m <= x) && m + 1 <= n) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 30 locations, 1 error locations. SAFE Result, 8.2s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 3.5s AutomataDifference, 0.0s DeadEndRemovalTime, 1.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 170 SDtfs, 218 SDslu, 578 SDs, 0 SdLazy, 166 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 8 DeclaredPredicates, 137 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.6s AbstIntTime, 4 AbstIntIterations, 4 AbstIntStrong, 0.9158163265306118 AbsIntWeakeningRatio, 0.35714285714285715 AbsIntAvgWeakeningVarsNumRemoved, 5.214285714285714 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 50 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 17 PreInvPairs, 29 NumberOfFragments, 155 HoareAnnotationTreeSize, 17 FomulaSimplifications, 1901 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 936 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 164 NumberOfCodeBlocks, 164 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 11293 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 22/41 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...