java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:39:02,730 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:39:02,732 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:39:02,745 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:39:02,746 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:39:02,747 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:39:02,748 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:39:02,750 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:39:02,751 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:39:02,752 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:39:02,753 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:39:02,753 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:39:02,754 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:39:02,755 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:39:02,757 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:39:02,757 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:39:02,758 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:39:02,760 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:39:02,762 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:39:02,764 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:39:02,765 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:39:02,766 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:39:02,769 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 15:39:02,779 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 [2018-09-19 15:39:02,799 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:39:02,800 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:39:02,804 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:39:02,804 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:39:02,805 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:39:02,805 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:39:02,805 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:39:02,805 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:39:02,808 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:39:02,808 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:39:02,809 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:39:02,809 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:39:02,809 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:39:02,809 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:39:02,809 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:39:02,810 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:39:02,810 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:39:02,810 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:39:02,810 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:39:02,812 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:39:02,812 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:39:02,812 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:39:02,812 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:39:02,813 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:39:02,813 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:39:02,813 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:39:02,813 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:39:02,813 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:39:02,814 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:39:02,814 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:39:02,814 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:39:02,814 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:39:02,864 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:39:02,878 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:39:02,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:39:02,884 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:39:02,884 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:39:02,885 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-09-19 15:39:03,228 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0789847a/b0cd54b2dc9845e89dd4c43149888996/FLAGe7973187c [2018-09-19 15:39:03,382 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:39:03,383 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float-no-simp6_true-unreach-call_true-termination.i [2018-09-19 15:39:03,390 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0789847a/b0cd54b2dc9845e89dd4c43149888996/FLAGe7973187c [2018-09-19 15:39:03,410 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0789847a/b0cd54b2dc9845e89dd4c43149888996 [2018-09-19 15:39:03,421 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:39:03,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:39:03,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:39:03,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:39:03,434 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:39:03,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@227196a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03, skipping insertion in model container [2018-09-19 15:39:03,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,452 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:39:03,705 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:39:03,732 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:39:03,758 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:39:03,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03 WrapperNode [2018-09-19 15:39:03,778 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:39:03,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:39:03,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:39:03,780 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:39:03,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,808 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (1/1) ... [2018-09-19 15:39:03,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:39:03,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:39:03,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:39:03,813 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:39:03,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (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 [2018-09-19 15:39:03,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:39:03,882 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:39:03,882 INFO L138 BoogieDeclarations]: Found implementation of procedure multiply [2018-09-19 15:39:03,883 INFO L138 BoogieDeclarations]: Found implementation of procedure divide [2018-09-19 15:39:03,883 INFO L138 BoogieDeclarations]: Found implementation of procedure cast [2018-09-19 15:39:03,883 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:39:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:39:03,883 INFO L130 BoogieDeclarations]: Found specification of procedure multiply [2018-09-19 15:39:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure divide [2018-09-19 15:39:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure cast [2018-09-19 15:39:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:39:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:39:03,884 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:39:04,239 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 15:39:04,239 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:39:04 BoogieIcfgContainer [2018-09-19 15:39:04,240 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 15:39:04,241 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 15:39:04,241 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 15:39:04,244 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 15:39:04,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:39:03" (1/3) ... [2018-09-19 15:39:04,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4688eafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:39:04, skipping insertion in model container [2018-09-19 15:39:04,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:39:03" (2/3) ... [2018-09-19 15:39:04,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4688eafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:39:04, skipping insertion in model container [2018-09-19 15:39:04,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:39:04" (3/3) ... [2018-09-19 15:39:04,248 INFO L112 eAbstractionObserver]: Analyzing ICFG float-no-simp6_true-unreach-call_true-termination.i [2018-09-19 15:39:04,259 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 15:39:04,267 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2018-09-19 15:39:04,333 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 15:39:04,334 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 15:39:04,334 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 15:39:04,334 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 15:39:04,335 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 15:39:04,335 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 15:39:04,335 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 15:39:04,335 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 15:39:04,335 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 15:39:04,355 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2018-09-19 15:39:04,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2018-09-19 15:39:04,362 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:39:04,363 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:39:04,366 INFO L423 AbstractCegarLoop]: === Iteration 1 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:39:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1434687897, now seen corresponding path program 1 times [2018-09-19 15:39:04,376 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:39:04,376 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2018-09-19 15:39:04,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:39:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:39:04,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:39:04,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:39:04,553 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:39:04,565 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:39:04,566 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 15:39:04,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 15:39:04,585 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 15:39:04,585 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:39:04,587 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2018-09-19 15:39:04,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:39:04,624 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2018-09-19 15:39:04,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 15:39:04,627 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2018-09-19 15:39:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:39:04,637 INFO L225 Difference]: With dead ends: 49 [2018-09-19 15:39:04,638 INFO L226 Difference]: Without dead ends: 21 [2018-09-19 15:39:04,642 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:39:04,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2018-09-19 15:39:04,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2018-09-19 15:39:04,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-19 15:39:04,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 20 transitions. [2018-09-19 15:39:04,692 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 20 transitions. Word has length 8 [2018-09-19 15:39:04,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:39:04,692 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 20 transitions. [2018-09-19 15:39:04,693 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 15:39:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 20 transitions. [2018-09-19 15:39:04,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-19 15:39:04,694 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:39:04,694 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:39:04,695 INFO L423 AbstractCegarLoop]: === Iteration 2 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:39:04,695 INFO L82 PathProgramCache]: Analyzing trace with hash -1652764716, now seen corresponding path program 1 times [2018-09-19 15:39:04,698 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:39:04,698 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 15:39:04,712 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:39:04,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:39:04,965 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:39:04,995 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:39:04,995 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:39:05,008 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:39:05,009 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 15:39:05,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 15:39:05,011 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 15:39:05,011 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:39:05,011 INFO L87 Difference]: Start difference. First operand 21 states and 20 transitions. Second operand 3 states. [2018-09-19 15:39:05,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:39:05,032 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2018-09-19 15:39:05,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 15:39:05,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-09-19 15:39:05,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:39:05,036 INFO L225 Difference]: With dead ends: 21 [2018-09-19 15:39:05,037 INFO L226 Difference]: Without dead ends: 19 [2018-09-19 15:39:05,038 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:39:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-19 15:39:05,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2018-09-19 15:39:05,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2018-09-19 15:39:05,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2018-09-19 15:39:05,048 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 13 [2018-09-19 15:39:05,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:39:05,050 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2018-09-19 15:39:05,050 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 15:39:05,050 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2018-09-19 15:39:05,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-09-19 15:39:05,051 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:39:05,051 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:39:05,052 INFO L423 AbstractCegarLoop]: === Iteration 3 === [castErr0ASSERT_VIOLATIONERROR_FUNCTION, divideErr0ASSERT_VIOLATIONERROR_FUNCTION, multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:39:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash -207607829, now seen corresponding path program 1 times [2018-09-19 15:39:05,053 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:39:05,053 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2018-09-19 15:39:05,058 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:39:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:39:05,351 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:39:05,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:39:05,385 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:39:05,399 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:39:05,400 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 15:39:05,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 15:39:05,400 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 15:39:05,400 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:39:05,401 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 3 states. [2018-09-19 15:39:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:39:05,404 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2018-09-19 15:39:05,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 15:39:05,405 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2018-09-19 15:39:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:39:05,405 INFO L225 Difference]: With dead ends: 19 [2018-09-19 15:39:05,405 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 15:39:05,406 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:39:05,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 15:39:05,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 15:39:05,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 15:39:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 15:39:05,407 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2018-09-19 15:39:05,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:39:05,407 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 15:39:05,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 15:39:05,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 15:39:05,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 15:39:05,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-19 15:39:05,484 INFO L426 ceAbstractionStarter]: For program point castEXIT(lines 23 30) no Hoare annotation was computed. [2018-09-19 15:39:05,485 INFO L426 ceAbstractionStarter]: For program point L29(line 29) no Hoare annotation was computed. [2018-09-19 15:39:05,485 INFO L426 ceAbstractionStarter]: For program point L29-1(line 29) no Hoare annotation was computed. [2018-09-19 15:39:05,485 INFO L429 ceAbstractionStarter]: At program point castENTRY(lines 23 30) the Hoare annotation is: true [2018-09-19 15:39:05,485 INFO L426 ceAbstractionStarter]: For program point L29-3(lines 23 30) no Hoare annotation was computed. [2018-09-19 15:39:05,485 INFO L426 ceAbstractionStarter]: For program point castErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2018-09-19 15:39:05,486 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-19 15:39:05,486 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-19 15:39:05,486 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-19 15:39:05,486 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-19 15:39:05,486 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-19 15:39:05,486 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-19 15:39:05,486 INFO L426 ceAbstractionStarter]: For program point L20-3(lines 13 21) no Hoare annotation was computed. [2018-09-19 15:39:05,487 INFO L426 ceAbstractionStarter]: For program point divideErr0ASSERT_VIOLATIONERROR_FUNCTION(line 20) no Hoare annotation was computed. [2018-09-19 15:39:05,487 INFO L429 ceAbstractionStarter]: At program point divideENTRY(lines 13 21) the Hoare annotation is: true [2018-09-19 15:39:05,487 INFO L426 ceAbstractionStarter]: For program point divideEXIT(lines 13 21) no Hoare annotation was computed. [2018-09-19 15:39:05,487 INFO L426 ceAbstractionStarter]: For program point L20(line 20) no Hoare annotation was computed. [2018-09-19 15:39:05,487 INFO L426 ceAbstractionStarter]: For program point L20-1(line 20) no Hoare annotation was computed. [2018-09-19 15:39:05,487 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 32 37) the Hoare annotation is: true [2018-09-19 15:39:05,487 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 32 37) no Hoare annotation was computed. [2018-09-19 15:39:05,488 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 32 37) no Hoare annotation was computed. [2018-09-19 15:39:05,488 INFO L429 ceAbstractionStarter]: At program point L35(line 35) the Hoare annotation is: true [2018-09-19 15:39:05,488 INFO L429 ceAbstractionStarter]: At program point L34(line 34) the Hoare annotation is: true [2018-09-19 15:39:05,488 INFO L429 ceAbstractionStarter]: At program point multiplyENTRY(lines 3 11) the Hoare annotation is: true [2018-09-19 15:39:05,488 INFO L426 ceAbstractionStarter]: For program point L10(line 10) no Hoare annotation was computed. [2018-09-19 15:39:05,488 INFO L426 ceAbstractionStarter]: For program point multiplyEXIT(lines 3 11) no Hoare annotation was computed. [2018-09-19 15:39:05,488 INFO L426 ceAbstractionStarter]: For program point L10-1(line 10) no Hoare annotation was computed. [2018-09-19 15:39:05,489 INFO L426 ceAbstractionStarter]: For program point L10-3(lines 3 11) no Hoare annotation was computed. [2018-09-19 15:39:05,489 INFO L426 ceAbstractionStarter]: For program point multiplyErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2018-09-19 15:39:05,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 03:39:05 BoogieIcfgContainer [2018-09-19 15:39:05,492 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 15:39:05,493 INFO L168 Benchmark]: Toolchain (without parser) took 2071.30 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -727.7 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2018-09-19 15:39:05,495 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-09-19 15:39:05,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.06 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. [2018-09-19 15:39:05,496 INFO L168 Benchmark]: Boogie Preprocessor took 33.23 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. [2018-09-19 15:39:05,497 INFO L168 Benchmark]: RCFGBuilder took 426.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-09-19 15:39:05,498 INFO L168 Benchmark]: TraceAbstraction took 1251.34 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. [2018-09-19 15:39:05,502 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 353.06 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 33.23 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 426.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -797.0 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1251.34 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: - PositiveResult [Line: 29]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 20]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 29 locations, 3 error locations. SAFE Result, 1.1s OverallTime, 3 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 58 SDtfs, 4 SDslu, 53 SDs, 0 SdLazy, 2 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 30 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 9 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 755 SizeOfPredicates, 8 NumberOfNonLiveVariables, 80 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...