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-LIM.epf -i ../../../trunk/examples/svcomp/loop-invariants/eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 20:48:24,300 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 20:48:24,302 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 20:48:24,321 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 20:48:24,321 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 20:48:24,322 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 20:48:24,324 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 20:48:24,326 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 20:48:24,327 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 20:48:24,329 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 20:48:24,330 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 20:48:24,330 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 20:48:24,332 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 20:48:24,333 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 20:48:24,341 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 20:48:24,342 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 20:48:24,344 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 20:48:24,346 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 20:48:24,349 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 20:48:24,351 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 20:48:24,354 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 20:48:24,355 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 20:48:24,357 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 20:48:24,357 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 20:48:24,359 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 20:48:24,360 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 20:48:24,362 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 20:48:24,362 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 20:48:24,363 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 20:48:24,366 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 20:48:24,367 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 20:48:24,367 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 20:48:24,367 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 20:48:24,368 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 20:48:24,368 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 20:48:24,370 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 20:48:24,370 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-LIM.epf [2018-11-12 20:48:24,392 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 20:48:24,394 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 20:48:24,395 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 20:48:24,395 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 20:48:24,397 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 20:48:24,397 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 20:48:24,398 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 20:48:24,398 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 20:48:24,398 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 20:48:24,398 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 20:48:24,398 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 20:48:24,399 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 20:48:24,399 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 20:48:24,399 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 20:48:24,401 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 20:48:24,401 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 20:48:24,401 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 20:48:24,401 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 20:48:24,401 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 20:48:24,401 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 20:48:24,402 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 20:48:24,402 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 20:48:24,402 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 20:48:24,402 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 20:48:24,402 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 20:48:24,404 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 20:48:24,404 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 20:48:24,404 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 20:48:24,404 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 20:48:24,404 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 20:48:24,405 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 20:48:24,405 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 20:48:24,405 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 20:48:24,405 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 20:48:24,405 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 20:48:24,470 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 20:48:24,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 20:48:24,484 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 20:48:24,485 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 20:48:24,485 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 20:48:24,486 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-12 20:48:24,541 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11701ae64/dcfbf099915e4740855f36a3202d8334/FLAG2fc00e47e [2018-11-12 20:48:24,958 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 20:48:24,959 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-12 20:48:24,965 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11701ae64/dcfbf099915e4740855f36a3202d8334/FLAG2fc00e47e [2018-11-12 20:48:24,977 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11701ae64/dcfbf099915e4740855f36a3202d8334 [2018-11-12 20:48:24,988 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 20:48:24,990 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 20:48:24,990 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 20:48:24,991 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 20:48:24,994 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 20:48:24,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:48:24" (1/1) ... [2018-11-12 20:48:24,999 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@526e6b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:24, skipping insertion in model container [2018-11-12 20:48:24,999 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 08:48:24" (1/1) ... [2018-11-12 20:48:25,010 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 20:48:25,034 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 20:48:25,272 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:48:25,278 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 20:48:25,296 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 20:48:25,314 INFO L193 MainTranslator]: Completed translation [2018-11-12 20:48:25,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25 WrapperNode [2018-11-12 20:48:25,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 20:48:25,316 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 20:48:25,316 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 20:48:25,316 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 20:48:25,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,328 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,333 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 20:48:25,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 20:48:25,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 20:48:25,333 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 20:48:25,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,353 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,354 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (1/1) ... [2018-11-12 20:48:25,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 20:48:25,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 20:48:25,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 20:48:25,356 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 20:48:25,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (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 [2018-11-12 20:48:25,488 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 20:48:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 20:48:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 20:48:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 20:48:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 20:48:25,489 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 20:48:25,489 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-12 20:48:25,490 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-12 20:48:25,750 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 20:48:25,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:48:25 BoogieIcfgContainer [2018-11-12 20:48:25,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 20:48:25,752 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 20:48:25,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 20:48:25,765 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 20:48:25,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 08:48:24" (1/3) ... [2018-11-12 20:48:25,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12739706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:48:25, skipping insertion in model container [2018-11-12 20:48:25,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 08:48:25" (2/3) ... [2018-11-12 20:48:25,767 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12739706 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 08:48:25, skipping insertion in model container [2018-11-12 20:48:25,767 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 08:48:25" (3/3) ... [2018-11-12 20:48:25,769 INFO L112 eAbstractionObserver]: Analyzing ICFG eq1_true-unreach-call_true-valid-memsafety_true-no-overflow_false-termination.c [2018-11-12 20:48:25,781 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 20:48:25,788 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 20:48:25,807 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 20:48:25,856 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 20:48:25,857 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 20:48:25,857 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 20:48:25,857 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 20:48:25,857 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 20:48:25,858 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 20:48:25,858 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 20:48:25,858 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 20:48:25,877 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-11-12 20:48:25,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-12 20:48:25,883 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:48:25,884 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:48:25,888 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:48:25,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:48:25,893 INFO L82 PathProgramCache]: Analyzing trace with hash -147882559, now seen corresponding path program 1 times [2018-11-12 20:48:25,896 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:48:25,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:48:25,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:48:25,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:48:25,944 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:48:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:48:25,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:48:25,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:48:25,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-12 20:48:25,999 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:48:26,004 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-12 20:48:26,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-12 20:48:26,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-12 20:48:26,022 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-11-12 20:48:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:48:26,046 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2018-11-12 20:48:26,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-12 20:48:26,047 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-12 20:48:26,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:48:26,056 INFO L225 Difference]: With dead ends: 32 [2018-11-12 20:48:26,056 INFO L226 Difference]: Without dead ends: 13 [2018-11-12 20:48:26,060 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 [2018-11-12 20:48:26,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-12 20:48:26,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-12 20:48:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-12 20:48:26,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2018-11-12 20:48:26,097 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2018-11-12 20:48:26,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:48:26,098 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2018-11-12 20:48:26,098 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-12 20:48:26,098 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2018-11-12 20:48:26,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-12 20:48:26,099 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 20:48:26,099 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 20:48:26,100 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 20:48:26,100 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 20:48:26,100 INFO L82 PathProgramCache]: Analyzing trace with hash -717461825, now seen corresponding path program 1 times [2018-11-12 20:48:26,101 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 20:48:26,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:48:26,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 20:48:26,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 20:48:26,102 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 20:48:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 20:48:26,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 20:48:26,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 20:48:26,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 20:48:26,285 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 20:48:26,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 20:48:26,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 20:48:26,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 20:48:26,287 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2018-11-12 20:48:26,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 20:48:26,343 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2018-11-12 20:48:26,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-12 20:48:26,343 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-11-12 20:48:26,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 20:48:26,344 INFO L225 Difference]: With dead ends: 13 [2018-11-12 20:48:26,344 INFO L226 Difference]: Without dead ends: 0 [2018-11-12 20:48:26,345 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 20:48:26,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-12 20:48:26,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-12 20:48:26,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-12 20:48:26,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-12 20:48:26,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2018-11-12 20:48:26,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 20:48:26,346 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-12 20:48:26,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 20:48:26,346 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-12 20:48:26,347 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-12 20:48:26,351 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-12 20:48:26,419 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-11-12 20:48:26,419 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:48:26,419 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-12 20:48:26,419 INFO L428 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-11-12 20:48:26,419 INFO L428 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-11-12 20:48:26,419 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-12 20:48:26,420 INFO L428 ceAbstractionStarter]: At program point mainENTRY(lines 9 23) the Hoare annotation is: true [2018-11-12 20:48:26,420 INFO L425 ceAbstractionStarter]: For program point mainEXIT(lines 9 23) no Hoare annotation was computed. [2018-11-12 20:48:26,420 INFO L425 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-11-12 20:48:26,420 INFO L425 ceAbstractionStarter]: For program point L15(lines 15 19) no Hoare annotation was computed. [2018-11-12 20:48:26,420 INFO L425 ceAbstractionStarter]: For program point L14-1(lines 14 20) no Hoare annotation was computed. [2018-11-12 20:48:26,421 INFO L421 ceAbstractionStarter]: At program point L15-2(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2018-11-12 20:48:26,421 INFO L425 ceAbstractionStarter]: For program point mainFINAL(lines 9 23) no Hoare annotation was computed. [2018-11-12 20:48:26,421 INFO L421 ceAbstractionStarter]: At program point L14-3(lines 14 20) the Hoare annotation is: (and (= main_~w~0 main_~x~0) (= main_~z~0 main_~y~0)) [2018-11-12 20:48:26,421 INFO L428 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-11-12 20:48:26,421 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:48:26,422 INFO L425 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-12 20:48:26,422 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-12 20:48:26,422 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-12 20:48:26,422 INFO L425 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-11-12 20:48:26,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 08:48:26 BoogieIcfgContainer [2018-11-12 20:48:26,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 20:48:26,440 INFO L168 Benchmark]: Toolchain (without parser) took 1451.07 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -744.5 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2018-11-12 20:48:26,443 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:48:26,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 324.81 ms. Allocated memory is still 1.6 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. [2018-11-12 20:48:26,445 INFO L168 Benchmark]: Boogie Procedure Inliner took 17.01 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:48:26,447 INFO L168 Benchmark]: Boogie Preprocessor took 22.40 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 20:48:26,447 INFO L168 Benchmark]: RCFGBuilder took 395.49 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2018-11-12 20:48:26,452 INFO L168 Benchmark]: TraceAbstraction took 686.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 MB. Max. memory is 7.1 GB. [2018-11-12 20:48:26,460 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 324.81 ms. Allocated memory is still 1.6 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 17.01 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 22.40 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 395.49 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 759.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -811.0 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 686.91 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 55.9 MB). Peak memory consumption was 55.9 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: 14]: Loop Invariant Derived loop invariant: w == x && z == y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 0.5s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 30 SDtfs, 2 SDslu, 22 SDs, 0 SdLazy, 8 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s 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, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 19 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 401 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...