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_Bitvector-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 18:25:40,586 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 18:25:40,588 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 18:25:40,600 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 18:25:40,600 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 18:25:40,601 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 18:25:40,603 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 18:25:40,605 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 18:25:40,606 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 18:25:40,607 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 18:25:40,608 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 18:25:40,608 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 18:25:40,609 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 18:25:40,610 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 18:25:40,611 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 18:25:40,612 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 18:25:40,613 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 18:25:40,615 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 18:25:40,617 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 18:25:40,619 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 18:25:40,620 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 18:25:40,621 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 18:25:40,623 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-14 18:25:40,623 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-14 18:25:40,624 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-14 18:25:40,626 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-14 18:25:40,627 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-14 18:25:40,628 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-14 18:25:40,628 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-14 18:25:40,632 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-14 18:25:40,633 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-14 18:25:40,634 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-14 18:25:40,634 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-14 18:25:40,634 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-14 18:25:40,635 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-14 18:25:40,639 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-14 18:25:40,639 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector-Const.epf [2018-11-14 18:25:40,667 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 18:25:40,667 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 18:25:40,668 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 18:25:40,669 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 18:25:40,669 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 18:25:40,669 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 18:25:40,670 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 18:25:40,670 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 18:25:40,670 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 18:25:40,670 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 18:25:40,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 18:25:40,671 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 18:25:40,672 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 18:25:40,672 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 18:25:40,672 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-14 18:25:40,672 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-14 18:25:40,672 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 18:25:40,673 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 18:25:40,674 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-14 18:25:40,674 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 18:25:40,674 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 18:25:40,674 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 18:25:40,674 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 18:25:40,675 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 18:25:40,675 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 18:25:40,675 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 18:25:40,675 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 18:25:40,675 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 18:25:40,676 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-14 18:25:40,676 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 18:25:40,676 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-14 18:25:40,677 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-14 18:25:40,677 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 18:25:40,725 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 18:25:40,737 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 18:25:40,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 18:25:40,743 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 18:25:40,743 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 18:25:40,744 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i [2018-11-14 18:25:40,810 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6470fbef/e74f66880998434590645965d88851ea/FLAGe5235b4f4 [2018-11-14 18:25:41,302 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 18:25:41,303 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down_false-unreach-call_true-termination.i [2018-11-14 18:25:41,308 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6470fbef/e74f66880998434590645965d88851ea/FLAGe5235b4f4 [2018-11-14 18:25:41,323 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6470fbef/e74f66880998434590645965d88851ea [2018-11-14 18:25:41,333 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 18:25:41,335 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 18:25:41,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 18:25:41,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 18:25:41,340 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 18:25:41,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f50ab47 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41, skipping insertion in model container [2018-11-14 18:25:41,344 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,353 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 18:25:41,373 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 18:25:41,600 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 18:25:41,606 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 18:25:41,629 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 18:25:41,648 INFO L195 MainTranslator]: Completed translation [2018-11-14 18:25:41,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41 WrapperNode [2018-11-14 18:25:41,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 18:25:41,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 18:25:41,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 18:25:41,650 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 18:25:41,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,691 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (1/1) ... [2018-11-14 18:25:41,693 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 18:25:41,694 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 18:25:41,694 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 18:25:41,694 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 18:25:41,695 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (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 18:25:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 18:25:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 18:25:41,848 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-14 18:25:41,849 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 18:25:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 18:25:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-14 18:25:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2018-11-14 18:25:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 18:25:41,849 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 18:25:41,852 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 18:25:42,239 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 18:25:42,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 06:25:42 BoogieIcfgContainer [2018-11-14 18:25:42,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 18:25:42,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 18:25:42,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 18:25:42,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 18:25:42,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 06:25:41" (1/3) ... [2018-11-14 18:25:42,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375c2dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 06:25:42, skipping insertion in model container [2018-11-14 18:25:42,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 06:25:41" (2/3) ... [2018-11-14 18:25:42,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375c2dd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 06:25:42, skipping insertion in model container [2018-11-14 18:25:42,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 06:25:42" (3/3) ... [2018-11-14 18:25:42,248 INFO L112 eAbstractionObserver]: Analyzing ICFG count_up_down_false-unreach-call_true-termination.i [2018-11-14 18:25:42,256 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 18:25:42,263 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 18:25:42,281 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 18:25:42,315 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 18:25:42,315 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 18:25:42,316 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 18:25:42,316 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 18:25:42,316 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 18:25:42,316 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 18:25:42,316 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 18:25:42,316 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 18:25:42,316 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 18:25:42,334 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-11-14 18:25:42,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-14 18:25:42,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 18:25:42,342 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 18:25:42,344 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 18:25:42,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 18:25:42,350 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2018-11-14 18:25:42,355 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 18:25:42,356 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-14 18:25:42,374 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 18:25:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 18:25:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 18:25:42,424 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 18:25:42,487 INFO L256 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {21#true} is VALID [2018-11-14 18:25:42,491 INFO L273 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2018-11-14 18:25:42,491 INFO L268 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #32#return; {21#true} is VALID [2018-11-14 18:25:42,492 INFO L256 TraceCheckUtils]: 3: Hoare triple {21#true} call #t~ret3 := main(); {21#true} is VALID [2018-11-14 18:25:42,492 INFO L273 TraceCheckUtils]: 4: Hoare triple {21#true} ~n~0 := #t~nondet0;havoc #t~nondet0;~x~0 := ~n~0;~y~0 := 0bv32; {21#true} is VALID [2018-11-14 18:25:42,493 INFO L273 TraceCheckUtils]: 5: Hoare triple {21#true} assume !true; {22#false} is VALID [2018-11-14 18:25:42,494 INFO L256 TraceCheckUtils]: 6: Hoare triple {22#false} call __VERIFIER_assert((if ~y~0 != ~n~0 then 1bv32 else 0bv32)); {22#false} is VALID [2018-11-14 18:25:42,494 INFO L273 TraceCheckUtils]: 7: Hoare triple {22#false} ~cond := #in~cond; {22#false} is VALID [2018-11-14 18:25:42,494 INFO L273 TraceCheckUtils]: 8: Hoare triple {22#false} assume ~cond == 0bv32; {22#false} is VALID [2018-11-14 18:25:42,495 INFO L273 TraceCheckUtils]: 9: Hoare triple {22#false} assume !false; {22#false} is VALID [2018-11-14 18:25:42,497 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 18:25:42,498 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-14 18:25:42,501 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 18:25:42,501 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-14 18:25:42,506 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 18:25:42,509 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 18:25:42,512 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2018-11-14 18:25:42,542 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 18:25:42,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-14 18:25:42,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-14 18:25:42,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-14 18:25:42,553 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-11-14 18:25:42,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 18:25:42,666 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-11-14 18:25:42,666 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-14 18:25:42,666 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 18:25:42,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 18:25:42,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 18:25:42,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2018-11-14 18:25:42,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 18:25:42,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 32 transitions. [2018-11-14 18:25:42,685 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 32 transitions. [2018-11-14 18:25:42,959 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 18:25:42,970 INFO L225 Difference]: With dead ends: 29 [2018-11-14 18:25:42,970 INFO L226 Difference]: Without dead ends: 12 [2018-11-14 18:25:42,974 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 18:25:42,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-11-14 18:25:43,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-11-14 18:25:43,087 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 18:25:43,087 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand 12 states. [2018-11-14 18:25:43,088 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2018-11-14 18:25:43,088 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2018-11-14 18:25:43,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 18:25:43,091 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-11-14 18:25:43,092 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-14 18:25:43,092 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 18:25:43,092 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 18:25:43,092 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand 12 states. [2018-11-14 18:25:43,093 INFO L87 Difference]: Start difference. First operand 12 states. Second operand 12 states. [2018-11-14 18:25:43,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 18:25:43,096 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2018-11-14 18:25:43,096 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-14 18:25:43,097 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 18:25:43,097 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 18:25:43,097 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 18:25:43,098 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 18:25:43,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-11-14 18:25:43,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-11-14 18:25:43,101 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-11-14 18:25:43,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 18:25:43,102 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-11-14 18:25:43,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-14 18:25:43,102 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-11-14 18:25:43,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-11-14 18:25:43,103 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 18:25:43,103 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 18:25:43,104 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 18:25:43,104 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 18:25:43,105 INFO L82 PathProgramCache]: Analyzing trace with hash -571410792, now seen corresponding path program 1 times [2018-11-14 18:25:43,105 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 18:25:43,105 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-14 18:25:43,123 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 18:25:43,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 18:25:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 18:25:43,178 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-14 18:25:43,199 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 18:25:43,200 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 18:25:43,200 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 18:25:43,200 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2018-11-14 18:25:43,200 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2018-11-14 18:25:43,200 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-14 18:25:43,200 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 18:25:43,201 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 18:25:43,201 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2018-11-14 18:25:43,201 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2018-11-14 18:25:43,201 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 18:25:43,201 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 18:25:43,201 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 18:25:43,202 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2018-11-14 18:25:43,202 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2018-11-14 18:25:43,202 WARN L170 areAnnotationChecker]: L15-4 has no Hoare annotation [2018-11-14 18:25:43,202 WARN L170 areAnnotationChecker]: L15-4 has no Hoare annotation [2018-11-14 18:25:43,202 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 18:25:43,202 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 18:25:43,202 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2018-11-14 18:25:43,203 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 18:25:43,203 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-14 18:25:43,203 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-14 18:25:43,203 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 18:25:43,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 06:25:43 BoogieIcfgContainer [2018-11-14 18:25:43,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-14 18:25:43,207 INFO L168 Benchmark]: Toolchain (without parser) took 1873.82 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -713.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2018-11-14 18:25:43,209 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. [2018-11-14 18:25:43,210 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.97 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 18:25:43,210 INFO L168 Benchmark]: Boogie Preprocessor took 43.23 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 18:25:43,211 INFO L168 Benchmark]: RCFGBuilder took 546.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-14 18:25:43,212 INFO L168 Benchmark]: TraceAbstraction took 965.13 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: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2018-11-14 18:25:43,216 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 0.21 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 313.97 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 43.23 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 546.42 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 734.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -783.1 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 965.13 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: 58.7 MB). Peak memory consumption was 58.7 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, 0.4s 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, 9 GetRequests, 9 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, 20 ConjunctsInSsa, 1 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...