java -Xmx8000000000 -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 ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/loop-invariants/odd_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 10:45:18,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 10:45:18,733 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 10:45:18,757 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 10:45:18,759 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 10:45:18,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 10:45:18,764 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 10:45:18,767 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 10:45:18,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 10:45:18,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 10:45:18,771 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 10:45:18,772 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 10:45:18,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 10:45:18,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 10:45:18,775 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 10:45:18,776 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 10:45:18,777 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 10:45:18,779 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 10:45:18,781 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 10:45:18,783 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 10:45:18,785 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 10:45:18,786 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 10:45:18,789 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 10:45:18,789 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 10:45:18,790 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 10:45:18,791 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 10:45:18,792 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 10:45:18,793 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 10:45:18,794 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 10:45:18,795 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 10:45:18,796 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 10:45:18,796 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 10:45:18,800 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 10:45:18,822 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 10:45:18,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 10:45:18,823 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 10:45:18,824 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 10:45:18,824 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 10:45:18,824 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 10:45:18,824 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 10:45:18,824 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 10:45:18,825 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 10:45:18,825 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 10:45:18,825 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 10:45:18,825 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 10:45:18,825 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 10:45:18,826 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 10:45:18,826 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 10:45:18,827 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 10:45:18,827 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 10:45:18,827 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 10:45:18,827 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 10:45:18,827 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 10:45:18,828 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 10:45:18,828 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 10:45:18,828 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 10:45:18,828 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 10:45:18,828 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 10:45:18,829 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 10:45:18,829 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:45:18,829 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 10:45:18,829 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 10:45:18,829 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 10:45:18,830 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 10:45:18,830 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 10:45:18,830 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 10:45:18,830 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 10:45:18,830 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 10:45:18,831 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 10:45:18,906 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 10:45:18,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 10:45:18,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 10:45:18,939 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 10:45:18,939 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 10:45:18,940 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 10:45:19,022 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263963f30/7f58e011a17946bdb0c7ab14a18b2f99/FLAGec1081a71 [2018-11-07 10:45:19,563 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 10:45:19,564 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 10:45:19,570 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263963f30/7f58e011a17946bdb0c7ab14a18b2f99/FLAGec1081a71 [2018-11-07 10:45:19,588 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/263963f30/7f58e011a17946bdb0c7ab14a18b2f99 [2018-11-07 10:45:19,603 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 10:45:19,605 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 10:45:19,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 10:45:19,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 10:45:19,611 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 10:45:19,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,616 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fffadae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19, skipping insertion in model container [2018-11-07 10:45:19,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,628 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 10:45:19,649 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 10:45:19,847 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:45:19,852 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 10:45:19,871 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:45:19,890 INFO L193 MainTranslator]: Completed translation [2018-11-07 10:45:19,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19 WrapperNode [2018-11-07 10:45:19,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 10:45:19,892 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 10:45:19,892 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 10:45:19,892 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 10:45:19,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,918 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 10:45:19,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 10:45:19,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 10:45:19,919 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 10:45:19,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (1/1) ... [2018-11-07 10:45:19,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 10:45:19,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 10:45:19,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 10:45:19,943 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 10:45:19,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (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 [2018-11-07 10:45:20,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 10:45:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 10:45:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 10:45:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 10:45:20,093 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 10:45:20,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 10:45:20,094 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 10:45:20,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 10:45:20,316 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 10:45:20,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:45:20 BoogieIcfgContainer [2018-11-07 10:45:20,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 10:45:20,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 10:45:20,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 10:45:20,322 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 10:45:20,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:45:19" (1/3) ... [2018-11-07 10:45:20,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47be23a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:45:20, skipping insertion in model container [2018-11-07 10:45:20,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:45:19" (2/3) ... [2018-11-07 10:45:20,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47be23a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:45:20, skipping insertion in model container [2018-11-07 10:45:20,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:45:20" (3/3) ... [2018-11-07 10:45:20,326 INFO L112 eAbstractionObserver]: Analyzing ICFG odd_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-07 10:45:20,337 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 10:45:20,347 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 10:45:20,365 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 10:45:20,405 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 10:45:20,405 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 10:45:20,405 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 10:45:20,405 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 10:45:20,405 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 10:45:20,405 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 10:45:20,406 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 10:45:20,406 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 10:45:20,428 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-07 10:45:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-07 10:45:20,435 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:45:20,437 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:45:20,440 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:45:20,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:20,447 INFO L82 PathProgramCache]: Analyzing trace with hash 563245249, now seen corresponding path program 1 times [2018-11-07 10:45:20,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:45:20,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:20,504 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:45:20,504 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:20,505 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:45:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:45:20,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:45:20,566 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:45:20,566 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 10:45:20,567 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:45:20,571 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 10:45:20,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 10:45:20,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 10:45:20,587 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-07 10:45:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:45:20,612 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-11-07 10:45:20,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 10:45:20,614 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-07 10:45:20,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:45:20,623 INFO L225 Difference]: With dead ends: 32 [2018-11-07 10:45:20,624 INFO L226 Difference]: Without dead ends: 13 [2018-11-07 10:45:20,627 INFO L604 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 [2018-11-07 10:45:20,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-07 10:45:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-07 10:45:20,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-07 10:45:20,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-11-07 10:45:20,671 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-11-07 10:45:20,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:45:20,672 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-11-07 10:45:20,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 10:45:20,672 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-11-07 10:45:20,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-11-07 10:45:20,673 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:45:20,673 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:45:20,674 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:45:20,674 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:20,674 INFO L82 PathProgramCache]: Analyzing trace with hash -65738821, now seen corresponding path program 1 times [2018-11-07 10:45:20,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:45:20,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:20,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:45:20,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:20,677 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:45:20,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:45:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:45:20,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:45:20,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 10:45:20,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:45:20,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 10:45:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 10:45:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 10:45:20,988 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2018-11-07 10:45:21,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:45:21,084 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-11-07 10:45:21,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 10:45:21,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2018-11-07 10:45:21,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:45:21,086 INFO L225 Difference]: With dead ends: 21 [2018-11-07 10:45:21,086 INFO L226 Difference]: Without dead ends: 16 [2018-11-07 10:45:21,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 10:45:21,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-11-07 10:45:21,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-11-07 10:45:21,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-11-07 10:45:21,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-11-07 10:45:21,093 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2018-11-07 10:45:21,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:45:21,093 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-11-07 10:45:21,093 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 10:45:21,093 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-11-07 10:45:21,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-11-07 10:45:21,094 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:45:21,095 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 10:45:21,095 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:45:21,095 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:21,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1051591244, now seen corresponding path program 1 times [2018-11-07 10:45:21,096 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:45:21,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:21,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:45:21,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:45:21,098 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:45:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:45:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:45:21,282 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:45:21,282 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:45:21,285 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 16 with the following transitions: [2018-11-07 10:45:21,287 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [10], [13], [15], [22], [25], [27], [33], [34], [35], [37] [2018-11-07 10:45:21,331 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 10:45:21,332 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:45:21,804 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 10:45:21,806 INFO L272 AbstractInterpreter]: Visited 13 different actions 37 times. Merged at 4 different actions 12 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 2 variables. [2018-11-07 10:45:21,852 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:45:21,854 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 10:45:21,854 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:45:21,854 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-11-07 10:45:21,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:45:21,872 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:45:21,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:45:21,907 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:45:22,300 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 16 [2018-11-07 10:45:22,458 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:45:22,458 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:45:22,682 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 6 [2018-11-07 10:45:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2018-11-07 10:45:22,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 10:45:22,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 6] total 9 [2018-11-07 10:45:22,720 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:45:22,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 10:45:22,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 10:45:22,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-07 10:45:22,723 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-11-07 10:45:22,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:45:22,833 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2018-11-07 10:45:22,833 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 10:45:22,833 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-11-07 10:45:22,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:45:22,834 INFO L225 Difference]: With dead ends: 16 [2018-11-07 10:45:22,834 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 10:45:22,835 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 10:45:22,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 10:45:22,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 10:45:22,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 10:45:22,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 10:45:22,837 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2018-11-07 10:45:22,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:45:22,837 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 10:45:22,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 10:45:22,837 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 10:45:22,837 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 10:45:22,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 10:45:22,991 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 6 [2018-11-07 10:45:23,063 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 10:45:23,063 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:45:23,063 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 10:45:23,063 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 10:45:23,063 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 10:45:23,064 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 10:45:23,064 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 16) the Hoare annotation is: true [2018-11-07 10:45:23,064 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 16) no Hoare annotation was computed. [2018-11-07 10:45:23,064 INFO L425 ceAbstractionStarter]: For program point L14(line 14) no Hoare annotation was computed. [2018-11-07 10:45:23,064 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 16) no Hoare annotation was computed. [2018-11-07 10:45:23,064 INFO L425 ceAbstractionStarter]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2018-11-07 10:45:23,065 INFO L425 ceAbstractionStarter]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2018-11-07 10:45:23,065 INFO L421 ceAbstractionStarter]: At program point L11-4(lines 11 13) the Hoare annotation is: (not (= 0 (mod main_~x~0 2))) [2018-11-07 10:45:23,065 INFO L421 ceAbstractionStarter]: At program point L11-5(lines 11 13) the Hoare annotation is: (not (= 0 (mod main_~x~0 2))) [2018-11-07 10:45:23,065 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 10:45:23,066 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 10:45:23,066 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 10:45:23,066 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 10:45:23,066 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 10:45:23,066 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 10:45:23,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 10:45:23 BoogieIcfgContainer [2018-11-07 10:45:23,083 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 10:45:23,085 INFO L168 Benchmark]: Toolchain (without parser) took 3480.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -684.7 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:23,086 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:45:23,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:23,088 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.70 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:45:23,089 INFO L168 Benchmark]: Boogie Preprocessor took 23.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 10:45:23,090 INFO L168 Benchmark]: RCFGBuilder took 374.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:23,091 INFO L168 Benchmark]: TraceAbstraction took 2765.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.6 MB). Peak memory consumption was 110.6 MB. Max. memory is 7.1 GB. [2018-11-07 10:45:23,096 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 26.70 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.55 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 374.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -805.9 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2765.36 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 110.6 MB). Peak memory consumption was 110.6 MB. Max. memory is 7.1 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: 11]: Loop Invariant Derived loop invariant: !(0 == x % 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 2.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 40 SDtfs, 2 SDslu, 52 SDs, 0 SdLazy, 15 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 12 NumberOfFragments, 17 HoareAnnotationTreeSize, 9 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 62 ConstructedInterpolants, 2 QuantifiedInterpolants, 3570 SizeOfPredicates, 2 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/9 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...