java -ea -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/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default-Const.epf -i ../../../trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-370d6ab [2018-11-14 19:16:56,587 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 19:16:56,589 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 19:16:56,602 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 19:16:56,602 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 19:16:56,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 19:16:56,604 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 19:16:56,606 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 19:16:56,608 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 19:16:56,609 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 19:16:56,610 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 19:16:56,610 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 19:16:56,611 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 19:16:56,612 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 19:16:56,613 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 19:16:56,614 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 19:16:56,615 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 19:16:56,617 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 19:16:56,619 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 19:16:56,621 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 19:16:56,622 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 19:16:56,623 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 19:16:56,626 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-14 19:16:56,636 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default-Const.epf [2018-11-14 19:16:56,652 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 19:16:56,652 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 19:16:56,653 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 19:16:56,653 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 19:16:56,654 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 19:16:56,654 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 19:16:56,654 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 19:16:56,655 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 19:16:56,655 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 19:16:56,655 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-14 19:16:56,655 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 19:16:56,655 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 19:16:56,655 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 19:16:56,656 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 19:16:56,656 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 19:16:56,656 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 19:16:56,656 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 19:16:56,656 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-14 19:16:56,657 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 19:16:56,657 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 19:16:56,657 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 19:16:56,657 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 19:16:56,657 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 19:16:56,658 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 19:16:56,658 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 19:16:56,658 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 19:16:56,658 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 19:16:56,658 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-14 19:16:56,659 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 19:16:56,659 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-14 19:16:56,659 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 19:16:56,702 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 19:16:56,714 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 19:16:56,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 19:16:56,720 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 19:16:56,720 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 19:16:56,721 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i [2018-11-14 19:16:56,785 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297051ffd/02e5fdaee80149ea8d8ea45979c2a9f5/FLAG942666239 [2018-11-14 19:16:57,255 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 19:16:57,256 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i [2018-11-14 19:16:57,266 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297051ffd/02e5fdaee80149ea8d8ea45979c2a9f5/FLAG942666239 [2018-11-14 19:16:57,280 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/297051ffd/02e5fdaee80149ea8d8ea45979c2a9f5 [2018-11-14 19:16:57,291 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 19:16:57,292 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 19:16:57,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 19:16:57,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 19:16:57,298 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 19:16:57,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53aa012c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57, skipping insertion in model container [2018-11-14 19:16:57,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,313 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 19:16:57,334 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 19:16:57,529 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 19:16:57,534 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 19:16:57,553 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 19:16:57,570 INFO L195 MainTranslator]: Completed translation [2018-11-14 19:16:57,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57 WrapperNode [2018-11-14 19:16:57,570 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 19:16:57,571 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 19:16:57,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 19:16:57,572 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 19:16:57,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (1/1) ... [2018-11-14 19:16:57,608 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 19:16:57,608 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 19:16:57,609 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 19:16:57,609 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 19:16:57,610 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (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 [2018-11-14 19:16:57,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 19:16:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 19:16:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-14 19:16:57,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 19:16:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 19:16:57,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-14 19:16:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-14 19:16:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 19:16:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 19:16:57,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 19:16:58,101 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 19:16:58,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 07:16:58 BoogieIcfgContainer [2018-11-14 19:16:58,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 19:16:58,103 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 19:16:58,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 19:16:58,105 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 19:16:58,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 07:16:57" (1/3) ... [2018-11-14 19:16:58,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e776782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 07:16:58, skipping insertion in model container [2018-11-14 19:16:58,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 07:16:57" (2/3) ... [2018-11-14 19:16:58,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e776782 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 07:16:58, skipping insertion in model container [2018-11-14 19:16:58,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 07:16:58" (3/3) ... [2018-11-14 19:16:58,109 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_false-unreach-call_true-termination.i [2018-11-14 19:16:58,119 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 19:16:58,129 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 19:16:58,145 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 19:16:58,183 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 19:16:58,183 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 19:16:58,183 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 19:16:58,184 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 19:16:58,184 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 19:16:58,184 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 19:16:58,184 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 19:16:58,184 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 19:16:58,184 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 19:16:58,203 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-14 19:16:58,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-14 19:16:58,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 19:16:58,211 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 19:16:58,214 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 19:16:58,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 19:16:58,220 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-14 19:16:58,222 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 19:16:58,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 19:16:58,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 19:16:58,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 19:16:58,273 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 19:16:58,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 19:16:58,343 INFO L256 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {21#true} is VALID [2018-11-14 19:16:58,347 INFO L273 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2018-11-14 19:16:58,347 INFO L268 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #32#return; {21#true} is VALID [2018-11-14 19:16:58,348 INFO L256 TraceCheckUtils]: 3: Hoare triple {21#true} call #t~ret3 := main(); {21#true} is VALID [2018-11-14 19:16:58,348 INFO L273 TraceCheckUtils]: 4: Hoare triple {21#true} ~n~0 := #t~nondet0;havoc #t~nondet0;~x~0 := ~n~0;~y~0 := 0; {21#true} is VALID [2018-11-14 19:16:58,350 INFO L273 TraceCheckUtils]: 5: Hoare triple {21#true} assume !true; {22#false} is VALID [2018-11-14 19:16:58,350 INFO L256 TraceCheckUtils]: 6: Hoare triple {22#false} call __VERIFIER_assert((if ~y~0 % 4294967296 != ~n~0 % 4294967296 then 1 else 0)); {22#false} is VALID [2018-11-14 19:16:58,351 INFO L273 TraceCheckUtils]: 7: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2018-11-14 19:16:58,351 INFO L273 TraceCheckUtils]: 8: Hoare triple {22#false} assume ~cond == 0; {22#false} is VALID [2018-11-14 19:16:58,352 INFO L273 TraceCheckUtils]: 9: Hoare triple {22#false} assume !false; {22#false} is VALID [2018-11-14 19:16:58,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-14 19:16:58,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 19:16:58,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-14 19:16:58,362 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 19:16:58,366 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 19:16:58,370 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2018-11-14 19:16:58,426 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 19:16:58,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-14 19:16:58,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-14 19:16:58,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-14 19:16:58,437 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-14 19:16:58,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 19:16:58,512 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-14 19:16:58,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-14 19:16:58,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 19:16:58,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 19:16:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 19:16:58,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2018-11-14 19:16:58,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 19:16:58,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2018-11-14 19:16:58,528 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 32 transitions. [2018-11-14 19:16:58,712 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 19:16:58,722 INFO L225 Difference]: With dead ends: 29 [2018-11-14 19:16:58,722 INFO L226 Difference]: Without dead ends: 12 [2018-11-14 19:16:58,726 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 [2018-11-14 19:16:58,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-14 19:16:58,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-14 19:16:58,846 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 19:16:58,847 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2018-11-14 19:16:58,848 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2018-11-14 19:16:58,848 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2018-11-14 19:16:58,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 19:16:58,852 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-11-14 19:16:58,852 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-14 19:16:58,852 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 19:16:58,853 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 19:16:58,853 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2018-11-14 19:16:58,853 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2018-11-14 19:16:58,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 19:16:58,856 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-11-14 19:16:58,857 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-14 19:16:58,862 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 19:16:58,862 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 19:16:58,862 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 19:16:58,862 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 19:16:58,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-14 19:16:58,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-14 19:16:58,871 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-14 19:16:58,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 19:16:58,872 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-14 19:16:58,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-14 19:16:58,872 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-14 19:16:58,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-14 19:16:58,873 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 19:16:58,873 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 19:16:58,874 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 19:16:58,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 19:16:58,875 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-11-14 19:16:58,876 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-14 19:16:58,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-14 19:16:58,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 19:16:58,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 19:16:58,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-14 19:16:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 19:16:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 19:16:58,960 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-14 19:16:58,992 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 19:16:58,992 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 19:16:58,992 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 19:16:58,993 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2018-11-14 19:16:58,993 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2018-11-14 19:16:58,993 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-14 19:16:58,993 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 19:16:58,993 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 19:16:58,993 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2018-11-14 19:16:58,993 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2018-11-14 19:16:58,994 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 19:16:58,994 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 19:16:58,994 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 19:16:58,994 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2018-11-14 19:16:58,994 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2018-11-14 19:16:58,994 WARN L170 areAnnotationChecker]: L15-4 has no Hoare annotation [2018-11-14 19:16:58,994 WARN L170 areAnnotationChecker]: L15-4 has no Hoare annotation [2018-11-14 19:16:58,995 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 19:16:58,996 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 19:16:58,996 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2018-11-14 19:16:58,996 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 19:16:58,996 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-14 19:16:58,997 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-14 19:16:58,997 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2018-11-14 19:16:59,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 07:16:59 BoogieIcfgContainer [2018-11-14 19:16:59,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-14 19:16:59,005 INFO L168 Benchmark]: Toolchain (without parser) took 1713.18 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -733.4 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2018-11-14 19:16:59,010 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-14 19:16:59,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.49 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. [2018-11-14 19:16:59,012 INFO L168 Benchmark]: Boogie Preprocessor took 36.65 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. [2018-11-14 19:16:59,013 INFO L168 Benchmark]: RCFGBuilder took 493.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-14 19:16:59,015 INFO L168 Benchmark]: TraceAbstraction took 900.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. [2018-11-14 19:16:59,022 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.49 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 Preprocessor took 36.65 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 493.57 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 740.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.1 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 900.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 57.1 MB). Peak memory consumption was 57.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L13] unsigned int n = __VERIFIER_nondet_uint(); [L14] unsigned int x=n, y=0; VAL [n=0, x=0, y=0] [L15] COND FALSE !(x>0) VAL [n=0, x=0, y=0] [L20] CALL __VERIFIER_assert(y!=n) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. UNSAFE Result, 0.8s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 18 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...