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.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-370d6ab [2018-11-14 16:37:21,726 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-14 16:37:21,728 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-14 16:37:21,740 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-14 16:37:21,741 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-14 16:37:21,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-14 16:37:21,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-14 16:37:21,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-14 16:37:21,747 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-14 16:37:21,748 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-14 16:37:21,749 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-14 16:37:21,749 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-14 16:37:21,750 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-14 16:37:21,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-14 16:37:21,753 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-14 16:37:21,754 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-14 16:37:21,755 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-14 16:37:21,757 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-14 16:37:21,762 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-14 16:37:21,764 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-14 16:37:21,767 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-14 16:37:21,771 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-14 16:37:21,776 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-14 16:37:21,789 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-14 16:37:21,790 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-14 16:37:21,791 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-14 16:37:21,792 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-14 16:37:21,792 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf [2018-11-14 16:37:21,825 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-14 16:37:21,826 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-14 16:37:21,827 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-14 16:37:21,828 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-14 16:37:21,828 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-14 16:37:21,828 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-14 16:37:21,829 INFO L133 SettingsManager]: * Use SBE=true [2018-11-14 16:37:21,829 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-14 16:37:21,830 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-14 16:37:21,830 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-14 16:37:21,830 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-14 16:37:21,830 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-14 16:37:21,830 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-14 16:37:21,831 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-14 16:37:21,831 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-14 16:37:21,831 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-14 16:37:21,831 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-14 16:37:21,831 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-14 16:37:21,831 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-14 16:37:21,833 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-14 16:37:21,833 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-14 16:37:21,833 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-14 16:37:21,833 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-14 16:37:21,833 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-14 16:37:21,834 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-14 16:37:21,834 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-14 16:37:21,834 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-14 16:37:21,834 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-11-14 16:37:21,835 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-14 16:37:21,835 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-14 16:37:21,835 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-14 16:37:21,835 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-14 16:37:21,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-14 16:37:21,915 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-14 16:37:21,919 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-14 16:37:21,921 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-14 16:37:21,921 INFO L276 PluginConnector]: CDTParser initialized [2018-11-14 16:37:21,922 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i [2018-11-14 16:37:21,988 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4db046f/c6716d61164543f985609c38eb0cbce3/FLAGff9e77d41 [2018-11-14 16:37:22,509 INFO L298 CDTParser]: Found 1 translation units. [2018-11-14 16:37:22,510 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4_false-unreach-call_true-termination.i [2018-11-14 16:37:22,516 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4db046f/c6716d61164543f985609c38eb0cbce3/FLAGff9e77d41 [2018-11-14 16:37:22,535 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af4db046f/c6716d61164543f985609c38eb0cbce3 [2018-11-14 16:37:22,545 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-14 16:37:22,547 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-11-14 16:37:22,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-14 16:37:22,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-14 16:37:22,552 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-14 16:37:22,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7ab90e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22, skipping insertion in model container [2018-11-14 16:37:22,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-14 16:37:22,588 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-14 16:37:22,782 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:37:22,791 INFO L191 MainTranslator]: Completed pre-run [2018-11-14 16:37:22,809 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-14 16:37:22,827 INFO L195 MainTranslator]: Completed translation [2018-11-14 16:37:22,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22 WrapperNode [2018-11-14 16:37:22,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-14 16:37:22,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-14 16:37:22,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-14 16:37:22,829 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-14 16:37:22,845 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,845 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,852 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,852 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,866 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (1/1) ... [2018-11-14 16:37:22,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-14 16:37:22,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-14 16:37:22,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-14 16:37:22,870 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-14 16:37:22,871 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (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 16:37:22,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-14 16:37:22,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-14 16:37:22,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-14 16:37:22,992 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2018-11-14 16:37:22,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-14 16:37:22,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-11-14 16:37:22,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-14 16:37:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2018-11-14 16:37:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-14 16:37:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-14 16:37:22,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-14 16:37:23,403 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-14 16:37:23,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:37:23 BoogieIcfgContainer [2018-11-14 16:37:23,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-14 16:37:23,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-14 16:37:23,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-14 16:37:23,408 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-14 16:37:23,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.11 04:37:22" (1/3) ... [2018-11-14 16:37:23,409 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189c1008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:37:23, skipping insertion in model container [2018-11-14 16:37:23,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.11 04:37:22" (2/3) ... [2018-11-14 16:37:23,410 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189c1008 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.11 04:37:23, skipping insertion in model container [2018-11-14 16:37:23,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.11 04:37:23" (3/3) ... [2018-11-14 16:37:23,412 INFO L112 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4_false-unreach-call_true-termination.i [2018-11-14 16:37:23,422 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-14 16:37:23,431 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-14 16:37:23,446 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-14 16:37:23,481 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-14 16:37:23,482 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-14 16:37:23,482 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-14 16:37:23,482 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-14 16:37:23,482 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-14 16:37:23,483 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-14 16:37:23,483 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-14 16:37:23,483 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-14 16:37:23,483 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-14 16:37:23,503 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2018-11-14 16:37:23,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-11-14 16:37:23,510 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:37:23,512 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:37:23,514 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:37:23,520 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:37:23,521 INFO L82 PathProgramCache]: Analyzing trace with hash -337279170, now seen corresponding path program 1 times [2018-11-14 16:37:23,525 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:37:23,526 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 16:37:23,554 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:37:23,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:37:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-14 16:37:23,600 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-14 16:37:23,651 INFO L256 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2018-11-14 16:37:23,656 INFO L273 TraceCheckUtils]: 1: Hoare triple {28#true} ~x~0 := 0bv32; {28#true} is VALID [2018-11-14 16:37:23,656 INFO L273 TraceCheckUtils]: 2: Hoare triple {28#true} assume true; {28#true} is VALID [2018-11-14 16:37:23,657 INFO L268 TraceCheckUtils]: 3: Hoare quadruple {28#true} {28#true} #47#return; {28#true} is VALID [2018-11-14 16:37:23,657 INFO L256 TraceCheckUtils]: 4: Hoare triple {28#true} call #t~ret0 := main(); {28#true} is VALID [2018-11-14 16:37:23,670 INFO L273 TraceCheckUtils]: 5: Hoare triple {28#true} assume !true; {29#false} is VALID [2018-11-14 16:37:23,670 INFO L256 TraceCheckUtils]: 6: Hoare triple {29#false} call __VERIFIER_assert((if ~x~0 == 0bv32 then 1bv32 else 0bv32)); {29#false} is VALID [2018-11-14 16:37:23,671 INFO L273 TraceCheckUtils]: 7: Hoare triple {29#false} ~cond := #in~cond; {29#false} is VALID [2018-11-14 16:37:23,671 INFO L273 TraceCheckUtils]: 8: Hoare triple {29#false} assume ~cond == 0bv32; {29#false} is VALID [2018-11-14 16:37:23,671 INFO L273 TraceCheckUtils]: 9: Hoare triple {29#false} assume !false; {29#false} is VALID [2018-11-14 16:37:23,674 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 16:37:23,674 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-14 16:37:23,677 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-14 16:37:23,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-14 16:37:23,682 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 16:37:23,685 INFO L84 Accepts]: Finished accepts. word is accepted. [2018-11-14 16:37:23,690 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2018-11-14 16:37:23,723 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 16:37:23,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-14 16:37:23,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-14 16:37:23,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-14 16:37:23,735 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 2 states. [2018-11-14 16:37:23,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:23,846 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2018-11-14 16:37:23,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-14 16:37:23,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-11-14 16:37:23,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-14 16:37:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 16:37:23,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2018-11-14 16:37:23,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2018-11-14 16:37:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 51 transitions. [2018-11-14 16:37:23,864 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 51 transitions. [2018-11-14 16:37:24,243 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2018-11-14 16:37:24,254 INFO L225 Difference]: With dead ends: 39 [2018-11-14 16:37:24,254 INFO L226 Difference]: Without dead ends: 19 [2018-11-14 16:37:24,258 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 16:37:24,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-11-14 16:37:24,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-11-14 16:37:24,314 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2018-11-14 16:37:24,315 INFO L82 GeneralOperation]: Start isEquivalent. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:24,315 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:24,315 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:24,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:24,320 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-14 16:37:24,320 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-14 16:37:24,321 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:37:24,321 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:37:24,321 INFO L74 IsIncluded]: Start isIncluded. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:24,321 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 19 states. [2018-11-14 16:37:24,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-14 16:37:24,325 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-11-14 16:37:24,325 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-14 16:37:24,326 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-14 16:37:24,326 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2018-11-14 16:37:24,326 INFO L88 GeneralOperation]: Finished isEquivalent. [2018-11-14 16:37:24,327 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2018-11-14 16:37:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-11-14 16:37:24,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2018-11-14 16:37:24,331 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2018-11-14 16:37:24,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-14 16:37:24,332 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2018-11-14 16:37:24,332 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-14 16:37:24,335 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2018-11-14 16:37:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-14 16:37:24,336 INFO L367 BasicCegarLoop]: Found error trace [2018-11-14 16:37:24,336 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-14 16:37:24,336 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-14 16:37:24,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-14 16:37:24,337 INFO L82 PathProgramCache]: Analyzing trace with hash 672764537, now seen corresponding path program 1 times [2018-11-14 16:37:24,337 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-14 16:37:24,338 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 16:37:24,363 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-14 16:37:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 16:37:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-14 16:37:24,428 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-14 16:37:24,461 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2018-11-14 16:37:24,462 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2018-11-14 16:37:24,462 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2018-11-14 16:37:24,462 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 16:37:24,462 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2018-11-14 16:37:24,462 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2018-11-14 16:37:24,462 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2018-11-14 16:37:24,462 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2018-11-14 16:37:24,463 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2018-11-14 16:37:24,463 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2018-11-14 16:37:24,463 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2018-11-14 16:37:24,463 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2018-11-14 16:37:24,463 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 16:37:24,463 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2018-11-14 16:37:24,464 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2018-11-14 16:37:24,464 WARN L170 areAnnotationChecker]: L24 has no Hoare annotation [2018-11-14 16:37:24,464 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2018-11-14 16:37:24,464 WARN L170 areAnnotationChecker]: L24-2 has no Hoare annotation [2018-11-14 16:37:24,464 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 16:37:24,464 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2018-11-14 16:37:24,465 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2018-11-14 16:37:24,465 WARN L170 areAnnotationChecker]: evalEXIT has no Hoare annotation [2018-11-14 16:37:24,465 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2018-11-14 16:37:24,465 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2018-11-14 16:37:24,465 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2018-11-14 16:37:24,465 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2018-11-14 16:37:24,466 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 16:37:24,466 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2018-11-14 16:37:24,466 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2018-11-14 16:37:24,466 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2018-11-14 16:37:24,466 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2018-11-14 16:37:24,466 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2018-11-14 16:37:24,467 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-14 16:37:24,467 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2018-11-14 16:37:24,467 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2018-11-14 16:37:24,467 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 16:37:24,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.11 04:37:24 BoogieIcfgContainer [2018-11-14 16:37:24,470 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-14 16:37:24,472 INFO L168 Benchmark]: Toolchain (without parser) took 1925.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -702.4 MB). Peak memory consumption was 39.0 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:24,474 INFO L168 Benchmark]: CDTParser took 0.21 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 16:37:24,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.33 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 16:37:24,475 INFO L168 Benchmark]: Boogie Preprocessor took 40.82 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 16:37:24,476 INFO L168 Benchmark]: RCFGBuilder took 535.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:24,477 INFO L168 Benchmark]: TraceAbstraction took 1064.90 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: 73.7 MB). Peak memory consumption was 73.7 MB. Max. memory is 7.1 GB. [2018-11-14 16:37:24,482 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.33 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 40.82 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 535.13 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 741.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -786.6 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1064.90 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: 73.7 MB). Peak memory consumption was 73.7 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: [L10] int x=0; VAL [\old(x)=2, x=0] [L24] COND TRUE 1 VAL [\old(x)=0, x=0] [L26] CALL eval() VAL [\old(x)=0, x=0] [L14] COND TRUE 1 [L15] RET x=1 VAL [\old(x)=0, x=1] [L26] eval() VAL [\old(x)=0, x=1] [L27] CALL __VERIFIER_assert(x==0) VAL [\old(cond)=0, \old(x)=0, x=1] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(x)=0, cond=0, x=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. UNSAFE Result, 0.9s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 19 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=25occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 SizeOfPredicates, 0 NumberOfNonLiveVariables, 18 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...