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-INT.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 16:46:00,771 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 16:46:00,772 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 16:46:00,786 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 16:46:00,786 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 16:46:00,787 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 16:46:00,791 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 16:46:00,793 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 16:46:00,795 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 16:46:00,796 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 16:46:00,797 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 16:46:00,797 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 16:46:00,798 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 16:46:00,799 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 16:46:00,800 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 16:46:00,801 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 16:46:00,802 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 16:46:00,803 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 16:46:00,805 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 16:46:00,807 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 16:46:00,808 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 16:46:00,809 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 16:46:00,812 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 16:46:00,812 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 16:46:00,812 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 16:46:00,813 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 16:46:00,814 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 16:46:00,815 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 16:46:00,816 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 16:46:00,817 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 16:46:00,817 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 16:46:00,818 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 16:46:00,820 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 16:46:00,835 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 16:46:00,836 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 16:46:00,836 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 16:46:00,837 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 16:46:00,837 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 16:46:00,837 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 16:46:00,837 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 16:46:00,837 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 16:46:00,838 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 16:46:00,838 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 16:46:00,838 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 16:46:00,838 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 16:46:00,839 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 16:46:00,839 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 16:46:00,839 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 16:46:00,840 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 16:46:00,840 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 16:46:00,840 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 16:46:00,840 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 16:46:00,840 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 16:46:00,841 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 16:46:00,841 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 16:46:00,841 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 16:46:00,841 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 16:46:00,841 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 16:46:00,842 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 16:46:00,842 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 16:46:00,842 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 16:46:00,842 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 16:46:00,842 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 16:46:00,843 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 16:46:00,843 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 16:46:00,843 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 16:46:00,843 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 16:46:00,893 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 16:46:00,910 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 16:46:00,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 16:46:00,915 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 16:46:00,916 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 16:46:00,916 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-07 16:46:00,985 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9812b1c5d/14487570b3594a4eb75bc0a33777b8de/FLAGb1e90dedc [2018-11-07 16:46:01,407 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 16:46:01,408 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-07 16:46:01,414 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9812b1c5d/14487570b3594a4eb75bc0a33777b8de/FLAGb1e90dedc [2018-11-07 16:46:01,430 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9812b1c5d/14487570b3594a4eb75bc0a33777b8de [2018-11-07 16:46:01,441 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 16:46:01,442 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 16:46:01,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 16:46:01,444 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 16:46:01,449 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 16:46:01,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7da2af9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01, skipping insertion in model container [2018-11-07 16:46:01,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 16:46:01,483 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 16:46:01,697 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:46:01,702 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 16:46:01,721 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 16:46:01,739 INFO L193 MainTranslator]: Completed translation [2018-11-07 16:46:01,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01 WrapperNode [2018-11-07 16:46:01,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 16:46:01,741 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 16:46:01,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 16:46:01,741 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 16:46:01,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 16:46:01,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 16:46:01,768 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 16:46:01,768 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 16:46:01,778 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,779 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,780 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,793 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (1/1) ... [2018-11-07 16:46:01,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 16:46:01,804 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 16:46:01,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 16:46:01,804 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 16:46:01,805 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (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 16:46:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 16:46:01,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 16:46:01,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 16:46:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 16:46:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 16:46:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 16:46:01,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-07 16:46:01,946 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-07 16:46:02,219 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 16:46:02,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:46:02 BoogieIcfgContainer [2018-11-07 16:46:02,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 16:46:02,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 16:46:02,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 16:46:02,231 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 16:46:02,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 04:46:01" (1/3) ... [2018-11-07 16:46:02,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622f132d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:46:02, skipping insertion in model container [2018-11-07 16:46:02,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 04:46:01" (2/3) ... [2018-11-07 16:46:02,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@622f132d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 04:46:02, skipping insertion in model container [2018-11-07 16:46:02,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 04:46:02" (3/3) ... [2018-11-07 16:46:02,240 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-07 16:46:02,257 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 16:46:02,265 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 16:46:02,281 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 16:46:02,308 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 16:46:02,309 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 16:46:02,309 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 16:46:02,309 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 16:46:02,309 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 16:46:02,309 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 16:46:02,309 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 16:46:02,310 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 16:46:02,326 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2018-11-07 16:46:02,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-07 16:46:02,332 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:46:02,333 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:46:02,336 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:46:02,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:46:02,342 INFO L82 PathProgramCache]: Analyzing trace with hash -557638975, now seen corresponding path program 1 times [2018-11-07 16:46:02,344 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:46:02,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:46:02,389 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,390 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:46:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:46:02,443 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 16:46:02,445 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:46:02,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-07 16:46:02,446 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:46:02,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-07 16:46:02,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-07 16:46:02,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-07 16:46:02,467 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2018-11-07 16:46:02,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:46:02,488 INFO L93 Difference]: Finished difference Result 43 states and 56 transitions. [2018-11-07 16:46:02,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-07 16:46:02,490 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-07 16:46:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:46:02,498 INFO L225 Difference]: With dead ends: 43 [2018-11-07 16:46:02,498 INFO L226 Difference]: Without dead ends: 17 [2018-11-07 16:46:02,502 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 16:46:02,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-07 16:46:02,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-07 16:46:02,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-07 16:46:02,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-07 16:46:02,536 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-11-07 16:46:02,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:46:02,536 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-07 16:46:02,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-07 16:46:02,537 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-07 16:46:02,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-07 16:46:02,537 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:46:02,538 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:46:02,538 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:46:02,538 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:46:02,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1155614924, now seen corresponding path program 1 times [2018-11-07 16:46:02,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:46:02,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:46:02,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,541 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:46:02,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:46:02,590 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 16:46:02,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:46:02,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 16:46:02,591 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:46:02,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 16:46:02,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 16:46:02,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 16:46:02,593 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2018-11-07 16:46:02,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:46:02,611 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2018-11-07 16:46:02,611 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 16:46:02,612 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-11-07 16:46:02,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:46:02,612 INFO L225 Difference]: With dead ends: 24 [2018-11-07 16:46:02,613 INFO L226 Difference]: Without dead ends: 19 [2018-11-07 16:46:02,613 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 16:46:02,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-07 16:46:02,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-07 16:46:02,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-07 16:46:02,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2018-11-07 16:46:02,618 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2018-11-07 16:46:02,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:46:02,619 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2018-11-07 16:46:02,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 16:46:02,619 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2018-11-07 16:46:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 16:46:02,620 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:46:02,620 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:46:02,620 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:46:02,621 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:46:02,621 INFO L82 PathProgramCache]: Analyzing trace with hash -220474704, now seen corresponding path program 1 times [2018-11-07 16:46:02,621 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:46:02,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:46:02,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,623 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:46:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:46:02,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:46:02,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 16:46:02,697 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 16:46:02,697 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:46:02,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 16:46:02,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 16:46:02,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 16:46:02,698 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 3 states. [2018-11-07 16:46:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:46:02,725 INFO L93 Difference]: Finished difference Result 33 states and 38 transitions. [2018-11-07 16:46:02,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 16:46:02,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-11-07 16:46:02,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:46:02,727 INFO L225 Difference]: With dead ends: 33 [2018-11-07 16:46:02,727 INFO L226 Difference]: Without dead ends: 21 [2018-11-07 16:46:02,728 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 16:46:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-11-07 16:46:02,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-11-07 16:46:02,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-11-07 16:46:02,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2018-11-07 16:46:02,733 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2018-11-07 16:46:02,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:46:02,733 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2018-11-07 16:46:02,734 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 16:46:02,734 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2018-11-07 16:46:02,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-11-07 16:46:02,735 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:46:02,735 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:46:02,735 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:46:02,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:46:02,736 INFO L82 PathProgramCache]: Analyzing trace with hash 260416874, now seen corresponding path program 1 times [2018-11-07 16:46:02,736 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:46:02,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:46:02,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:02,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:46:02,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:46:02,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 16:46:02,804 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:46:02,804 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:46:02,805 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 21 with the following transitions: [2018-11-07 16:46:02,807 INFO L202 CegarAbsIntRunner]: [0], [4], [8], [12], [14], [18], [22], [24], [28], [32], [36], [48], [51], [53], [59], [60], [61], [63] [2018-11-07 16:46:02,838 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 16:46:02,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 16:46:03,137 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 16:46:03,140 INFO L272 AbstractInterpreter]: Visited 18 different actions 90 times. Merged at 8 different actions 53 times. Widened at 4 different actions 12 times. Found 7 fixpoints after 2 different actions. Largest state had 3 variables. [2018-11-07 16:46:03,152 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:46:03,153 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 16:46:03,153 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:46:03,154 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 16:46:03,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:46:03,170 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 16:46:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:46:03,204 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:46:03,227 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 16:46:03,228 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:46:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-07 16:46:03,339 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 16:46:03,339 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2018-11-07 16:46:03,340 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 16:46:03,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 16:46:03,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 16:46:03,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:46:03,341 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 4 states. [2018-11-07 16:46:03,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:46:03,381 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2018-11-07 16:46:03,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 16:46:03,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-11-07 16:46:03,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:46:03,384 INFO L225 Difference]: With dead ends: 33 [2018-11-07 16:46:03,384 INFO L226 Difference]: Without dead ends: 28 [2018-11-07 16:46:03,385 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-07 16:46:03,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2018-11-07 16:46:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2018-11-07 16:46:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-11-07 16:46:03,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-11-07 16:46:03,391 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 20 [2018-11-07 16:46:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:46:03,391 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-11-07 16:46:03,391 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 16:46:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-11-07 16:46:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-07 16:46:03,392 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 16:46:03,393 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 16:46:03,393 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 16:46:03,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 16:46:03,394 INFO L82 PathProgramCache]: Analyzing trace with hash 1089248186, now seen corresponding path program 2 times [2018-11-07 16:46:03,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 16:46:03,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:03,395 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 16:46:03,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 16:46:03,395 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 16:46:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 16:46:03,497 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 16:46:03,499 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:46:03,499 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 16:46:03,499 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-07 16:46:03,499 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 16:46:03,500 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 16:46:03,500 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 16:46:03,518 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-07 16:46:03,518 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-07 16:46:03,547 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-07 16:46:03,547 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-07 16:46:03,552 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 16:46:03,835 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 16:46:03,835 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 16:46:03,964 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-07 16:46:03,984 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 16:46:03,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [5] total 10 [2018-11-07 16:46:03,985 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 16:46:03,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 16:46:03,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 16:46:03,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-07 16:46:03,986 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2018-11-07 16:46:04,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 16:46:04,028 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-07 16:46:04,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-07 16:46:04,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2018-11-07 16:46:04,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 16:46:04,029 INFO L225 Difference]: With dead ends: 42 [2018-11-07 16:46:04,030 INFO L226 Difference]: Without dead ends: 0 [2018-11-07 16:46:04,031 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2018-11-07 16:46:04,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-07 16:46:04,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-07 16:46:04,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-07 16:46:04,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-07 16:46:04,032 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2018-11-07 16:46:04,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 16:46:04,032 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-07 16:46:04,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 16:46:04,033 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-07 16:46:04,033 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-07 16:46:04,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-07 16:46:04,117 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-07 16:46:04,117 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:46:04,117 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-07 16:46:04,117 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-07 16:46:04,117 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-07 16:46:04,118 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-07 16:46:04,118 INFO L425 ceAbstractionStarter]: For program point L25(line 25) no Hoare annotation was computed. [2018-11-07 16:46:04,118 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 10 27) no Hoare annotation was computed. [2018-11-07 16:46:04,118 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-11-07 16:46:04,118 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (= main_~k~0 4) [2018-11-07 16:46:04,119 INFO L421 ceAbstractionStarter]: At program point L21-4(lines 15 24) the Hoare annotation is: (or (= main_~k~0 4) (and (<= (+ main_~j~0 100) 0) (<= main_~i~0 0))) [2018-11-07 16:46:04,119 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 19) no Hoare annotation was computed. [2018-11-07 16:46:04,119 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 24) no Hoare annotation was computed. [2018-11-07 16:46:04,119 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: (or (= main_~k~0 4) (<= main_~i~0 1)) [2018-11-07 16:46:04,119 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2018-11-07 16:46:04,119 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 10 27) no Hoare annotation was computed. [2018-11-07 16:46:04,120 INFO L421 ceAbstractionStarter]: At program point L15-3(lines 15 24) the Hoare annotation is: (= main_~k~0 4) [2018-11-07 16:46:04,120 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 10 27) the Hoare annotation is: true [2018-11-07 16:46:04,120 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-07 16:46:04,120 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-07 16:46:04,120 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-07 16:46:04,121 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-07 16:46:04,121 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-07 16:46:04,121 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-07 16:46:04,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:46:04 BoogieIcfgContainer [2018-11-07 16:46:04,133 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 16:46:04,134 INFO L168 Benchmark]: Toolchain (without parser) took 2692.77 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 703.6 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -641.2 MB). Peak memory consumption was 62.4 MB. Max. memory is 7.1 GB. [2018-11-07 16:46:04,136 INFO L168 Benchmark]: CDTParser took 0.21 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 16:46:04,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.94 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 16:46:04,138 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.31 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 16:46:04,138 INFO L168 Benchmark]: Boogie Preprocessor took 36.09 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 16:46:04,139 INFO L168 Benchmark]: RCFGBuilder took 415.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 703.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -755.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-07 16:46:04,140 INFO L168 Benchmark]: TraceAbstraction took 1912.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 103.6 MB). Peak memory consumption was 103.6 MB. Max. memory is 7.1 GB. [2018-11-07 16:46:04,146 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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. * CACSL2BoogieTranslator took 296.94 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 26.31 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 36.09 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 415.73 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 703.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -755.4 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1912.76 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 103.6 MB). Peak memory consumption was 103.6 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: 15]: Loop Invariant Derived loop invariant: k == 4 || (j + 100 <= 0 && i <= 0) - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: k == 4 || i <= 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. SAFE Result, 1.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 99 SDtfs, 6 SDslu, 110 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 14 PreInvPairs, 23 NumberOfFragments, 31 HoareAnnotationTreeSize, 14 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 133 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 171 ConstructedInterpolants, 0 QuantifiedInterpolants, 6811 SizeOfPredicates, 3 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 49/59 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...