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/float-benchs/rlim_invariant_true-unreach-call_true-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:47:00,863 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:47:00,865 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:47:00,877 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:47:00,878 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:47:00,879 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:47:00,880 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:47:00,882 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:47:00,884 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:47:00,885 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:47:00,886 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:47:00,886 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:47:00,888 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:47:00,889 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:47:00,890 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:47:00,891 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:47:00,892 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:47:00,894 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:47:00,896 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:47:00,897 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:47:00,899 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:47:00,900 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:47:00,902 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-19 15:47:00,903 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-19 15:47:00,903 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-19 15:47:00,904 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-19 15:47:00,905 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-19 15:47:00,906 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-19 15:47:00,907 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-19 15:47:00,908 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-19 15:47:00,908 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-19 15:47:00,909 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-19 15:47:00,909 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 15:47:00,909 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 15:47:00,910 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 15:47:00,911 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 15:47:00,911 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 15:47:00,939 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:47:00,939 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:47:00,940 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:47:00,941 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:47:00,941 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:47:00,942 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:47:00,942 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:47:00,942 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:47:00,942 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:47:00,942 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:47:00,943 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:47:00,943 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:47:00,943 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:47:00,943 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:47:00,944 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:47:00,945 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:47:00,945 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:47:00,945 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:47:00,945 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:47:00,946 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:47:00,947 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:47:00,947 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:47:00,947 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:47:00,947 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:47:00,947 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:47:00,948 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:47:00,948 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:47:00,948 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:47:00,948 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:47:00,949 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:47:00,949 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:47:00,949 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:47:01,007 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:47:01,024 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:47:01,029 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:47:01,031 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:47:01,031 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:47:01,032 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-09-19 15:47:01,413 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e85f84cd/c23585ea408f47bb8ae4826def27d5b7/FLAGb76f922de [2018-09-19 15:47:01,574 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:47:01,575 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/rlim_invariant_true-unreach-call_true-termination.c [2018-09-19 15:47:01,580 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e85f84cd/c23585ea408f47bb8ae4826def27d5b7/FLAGb76f922de [2018-09-19 15:47:01,597 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e85f84cd/c23585ea408f47bb8ae4826def27d5b7 [2018-09-19 15:47:01,607 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:47:01,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:47:01,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:47:01,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:47:01,618 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:47:01,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d5a17e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01, skipping insertion in model container [2018-09-19 15:47:01,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,634 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:47:01,834 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:47:01,861 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:47:01,873 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:47:01,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01 WrapperNode [2018-09-19 15:47:01,891 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:47:01,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:47:01,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:47:01,892 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:47:01,908 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,908 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,922 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,928 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (1/1) ... [2018-09-19 15:47:01,933 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:47:01,934 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:47:01,934 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:47:01,934 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:47:01,935 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (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 15:47:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:47:02,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:47:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 15:47:02,013 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:47:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:47:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-19 15:47:02,013 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-19 15:47:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 15:47:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:47:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:47:02,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:47:02,629 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 15:47:02,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:47:02 BoogieIcfgContainer [2018-09-19 15:47:02,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 15:47:02,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 15:47:02,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 15:47:02,635 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 15:47:02,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:47:01" (1/3) ... [2018-09-19 15:47:02,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f67ea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:47:02, skipping insertion in model container [2018-09-19 15:47:02,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:47:01" (2/3) ... [2018-09-19 15:47:02,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f67ea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:47:02, skipping insertion in model container [2018-09-19 15:47:02,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:47:02" (3/3) ... [2018-09-19 15:47:02,639 INFO L112 eAbstractionObserver]: Analyzing ICFG rlim_invariant_true-unreach-call_true-termination.c [2018-09-19 15:47:02,649 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 15:47:02,658 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 15:47:02,710 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 15:47:02,711 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 15:47:02,711 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 15:47:02,711 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 15:47:02,712 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 15:47:02,712 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 15:47:02,712 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 15:47:02,712 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 15:47:02,712 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 15:47:02,732 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-09-19 15:47:02,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-09-19 15:47:02,740 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:47:02,741 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:47:02,744 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:47:02,752 INFO L82 PathProgramCache]: Analyzing trace with hash 874356560, now seen corresponding path program 1 times [2018-09-19 15:47:02,759 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:47:02,760 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 15:47:02,776 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:47:02,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:47:02,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:47:03,266 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 15:47:03,266 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:47:03,283 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:47:03,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 15:47:03,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 15:47:03,301 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 15:47:03,302 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-09-19 15:47:03,304 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 7 states. [2018-09-19 15:47:04,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:47:04,348 INFO L93 Difference]: Finished difference Result 64 states and 85 transitions. [2018-09-19 15:47:04,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 15:47:04,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2018-09-19 15:47:04,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:47:04,363 INFO L225 Difference]: With dead ends: 64 [2018-09-19 15:47:04,364 INFO L226 Difference]: Without dead ends: 33 [2018-09-19 15:47:04,368 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-19 15:47:04,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2018-09-19 15:47:04,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2018-09-19 15:47:04,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2018-09-19 15:47:04,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2018-09-19 15:47:04,418 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 12 [2018-09-19 15:47:04,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:47:04,418 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2018-09-19 15:47:04,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 15:47:04,419 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2018-09-19 15:47:04,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-19 15:47:04,420 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:47:04,420 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:47:04,420 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:47:04,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1368016777, now seen corresponding path program 1 times [2018-09-19 15:47:04,421 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:47:04,421 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 15:47:04,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:47:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:47:04,508 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:47:04,896 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 15:47:04,896 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:47:04,914 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:47:04,914 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-19 15:47:04,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-19 15:47:04,920 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-19 15:47:04,921 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-09-19 15:47:04,921 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 7 states. [2018-09-19 15:47:06,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:47:06,087 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2018-09-19 15:47:06,090 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 15:47:06,090 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2018-09-19 15:47:06,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:47:06,093 INFO L225 Difference]: With dead ends: 40 [2018-09-19 15:47:06,094 INFO L226 Difference]: Without dead ends: 38 [2018-09-19 15:47:06,095 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2018-09-19 15:47:06,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-09-19 15:47:06,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2018-09-19 15:47:06,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-19 15:47:06,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-09-19 15:47:06,104 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-09-19 15:47:06,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:47:06,105 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-09-19 15:47:06,105 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-19 15:47:06,105 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-09-19 15:47:06,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-19 15:47:06,106 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:47:06,106 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:47:06,107 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:47:06,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1369863819, now seen corresponding path program 1 times [2018-09-19 15:47:06,108 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:47:06,108 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 15:47:06,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:47:06,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:47:06,161 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:47:06,217 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 15:47:06,218 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:47:06,232 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:47:06,233 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-19 15:47:06,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-19 15:47:06,233 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-19 15:47:06,234 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-19 15:47:06,234 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 5 states. [2018-09-19 15:47:06,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:47:06,624 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2018-09-19 15:47:06,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 15:47:06,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2018-09-19 15:47:06,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:47:06,628 INFO L225 Difference]: With dead ends: 36 [2018-09-19 15:47:06,628 INFO L226 Difference]: Without dead ends: 34 [2018-09-19 15:47:06,629 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-19 15:47:06,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-09-19 15:47:06,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 26. [2018-09-19 15:47:06,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-19 15:47:06,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-09-19 15:47:06,636 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 13 [2018-09-19 15:47:06,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:47:06,637 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-09-19 15:47:06,637 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-19 15:47:06,637 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-09-19 15:47:06,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-19 15:47:06,638 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:47:06,639 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:47:06,639 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:47:06,639 INFO L82 PathProgramCache]: Analyzing trace with hash -758059740, now seen corresponding path program 1 times [2018-09-19 15:47:06,640 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:47:06,640 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2018-09-19 15:47:06,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:47:06,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:47:06,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:47:07,254 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 15:47:11,310 WARN L178 SmtUtils]: Spent 516.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 15:47:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:47:13,340 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:47:17,081 WARN L178 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-09-19 15:47:30,054 WARN L178 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 27 [2018-09-19 15:47:32,166 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or .cse0 .cse1 (forall ((v_prenex_2 (_ FloatingPoint 8 24))) (or (not (fp.leq v_prenex_2 ((_ to_fp 8 24) RNE 16.0))) (fp.leq (fp.sub RNE c_main_~Y~0 v_prenex_2) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_prenex_2 (_ +zero 8 24)))))) (or (forall ((v_main_~D~0_7 (_ FloatingPoint 8 24))) (or (fp.geq (fp.sub RNE c_main_~Y~0 v_main_~D~0_7) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.geq v_main_~D~0_7 (_ +zero 8 24))) (not (fp.leq v_main_~D~0_7 ((_ to_fp 8 24) RNE 16.0))))) .cse0 .cse1)))) is different from true [2018-09-19 15:47:32,180 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-19 15:47:32,180 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-19 15:47:32,188 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:47:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:47:34,807 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:47:46,897 WARN L178 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 15:47:47,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:47:47,285 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:47:51,875 WARN L178 SmtUtils]: Spent 1.32 s on a formula simplification that was a NOOP. DAG size: 17 [2018-09-19 15:48:08,669 WARN L178 SmtUtils]: Spent 637.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2018-09-19 15:48:10,817 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or .cse0 (forall ((v_prenex_4 (_ FloatingPoint 8 24)) (v_prenex_5 (_ FloatingPoint 8 24))) (or (fp.leq (fp.sub RNE c_main_~Y~0 v_prenex_4) ((_ to_fp 8 24) RNE 129.0)) (not (fp.leq v_prenex_5 (fp.neg v_prenex_4))) (not (fp.geq v_prenex_4 (_ +zero 8 24))) (not (fp.leq v_prenex_4 ((_ to_fp 8 24) RNE 16.0))))) .cse1) (or .cse0 (forall ((v_main_~D~0_8 (_ FloatingPoint 8 24)) (main_~R~0 (_ FloatingPoint 8 24))) (or (not (fp.leq main_~R~0 (fp.neg v_main_~D~0_8))) (fp.geq (fp.sub RNE c_main_~Y~0 v_main_~D~0_8) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.leq v_main_~D~0_8 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq v_main_~D~0_8 (_ +zero 8 24))))) .cse1)))) is different from true [2018-09-19 15:48:10,847 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:48:10,848 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 12 [2018-09-19 15:48:10,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-09-19 15:48:10,848 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-09-19 15:48:10,849 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=240, Unknown=12, NotChecked=66, Total=380 [2018-09-19 15:48:10,849 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 12 states. [2018-09-19 15:48:29,673 WARN L178 SmtUtils]: Spent 741.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 15:48:33,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:48:33,938 INFO L93 Difference]: Finished difference Result 52 states and 61 transitions. [2018-09-19 15:48:33,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-09-19 15:48:33,939 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-09-19 15:48:33,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:48:33,940 INFO L225 Difference]: With dead ends: 52 [2018-09-19 15:48:33,941 INFO L226 Difference]: Without dead ends: 50 [2018-09-19 15:48:33,941 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 22 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 70.8s TimeCoverageRelationStatistics Valid=95, Invalid=359, Unknown=16, NotChecked=82, Total=552 [2018-09-19 15:48:33,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-09-19 15:48:33,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2018-09-19 15:48:33,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2018-09-19 15:48:33,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2018-09-19 15:48:33,954 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 21 [2018-09-19 15:48:33,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:48:33,954 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2018-09-19 15:48:33,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-09-19 15:48:33,955 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2018-09-19 15:48:33,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-09-19 15:48:33,956 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:48:33,956 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:48:33,956 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:48:33,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1992248267, now seen corresponding path program 1 times [2018-09-19 15:48:33,957 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:48:33,957 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2018-09-19 15:48:33,962 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:48:34,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:48:34,210 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:48:35,739 WARN L178 SmtUtils]: Spent 923.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2018-09-19 15:48:39,953 WARN L178 SmtUtils]: Spent 3.57 s on a formula simplification that was a NOOP. DAG size: 28 [2018-09-19 15:48:42,367 WARN L819 $PredicateComparison]: unable to prove that (exists ((main_~X~0 (_ FloatingPoint 8 24)) (main_~S~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.sub RNE main_~X~0 main_~S~0)) (.cse1 ((_ to_fp 8 24) RNE 128.0)) (.cse2 ((_ to_fp 8 24) RNE 129.0))) (and (not (fp.leq .cse0 (fp.neg main_~D~0))) (fp.geq main_~X~0 (fp.neg .cse1)) (fp.leq main_~S~0 .cse2) (fp.geq .cse0 main_~D~0) (fp.leq main_~X~0 .cse1) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 ((_ to_fp 8 24) RNE 16.0)) (= (fp.add RNE main_~S~0 main_~D~0) c_main_~Y~0) (fp.geq main_~S~0 (fp.neg .cse2))))) is different from true [2018-09-19 15:49:08,895 WARN L178 SmtUtils]: Spent 10.47 s on a formula simplification that was a NOOP. DAG size: 37 [2018-09-19 15:49:28,551 WARN L178 SmtUtils]: Spent 10.62 s on a formula simplification that was a NOOP. DAG size: 37 [2018-09-19 15:49:34,596 WARN L797 $PredicateComparison]: unable to prove that (exists ((v_prenex_6 (_ FloatingPoint 8 24)) (v_prenex_7 (_ FloatingPoint 8 24)) (v_prenex_9 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.sub RNE v_prenex_6 v_prenex_7)) (.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse1 ((_ to_fp 8 24) RNE 129.0))) (and (not (fp.leq .cse0 (fp.neg v_prenex_9))) (fp.geq .cse0 v_prenex_9) (fp.geq v_prenex_9 (_ +zero 8 24)) (not (fp.leq (fp.add RNE v_prenex_7 v_prenex_9) .cse1)) (fp.leq v_prenex_6 .cse2) (fp.geq v_prenex_6 (fp.neg .cse2)) (fp.leq v_prenex_7 .cse1) (fp.geq v_prenex_7 (fp.neg .cse1)) (fp.leq v_prenex_9 ((_ to_fp 8 24) RNE 16.0))))) is different from false [2018-09-19 15:49:36,609 WARN L819 $PredicateComparison]: unable to prove that (exists ((v_prenex_6 (_ FloatingPoint 8 24)) (v_prenex_7 (_ FloatingPoint 8 24)) (v_prenex_9 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.sub RNE v_prenex_6 v_prenex_7)) (.cse2 ((_ to_fp 8 24) RNE 128.0)) (.cse1 ((_ to_fp 8 24) RNE 129.0))) (and (not (fp.leq .cse0 (fp.neg v_prenex_9))) (fp.geq .cse0 v_prenex_9) (fp.geq v_prenex_9 (_ +zero 8 24)) (not (fp.leq (fp.add RNE v_prenex_7 v_prenex_9) .cse1)) (fp.leq v_prenex_6 .cse2) (fp.geq v_prenex_6 (fp.neg .cse2)) (fp.leq v_prenex_7 .cse1) (fp.geq v_prenex_7 (fp.neg .cse1)) (fp.leq v_prenex_9 ((_ to_fp 8 24) RNE 16.0))))) is different from true [2018-09-19 15:49:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:49:36,614 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:49:49,710 WARN L178 SmtUtils]: Spent 784.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 15:50:02,714 WARN L178 SmtUtils]: Spent 912.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-09-19 15:50:27,097 WARN L178 SmtUtils]: Spent 3.92 s on a formula simplification that was a NOOP. DAG size: 50 [2018-09-19 15:50:36,906 WARN L797 $PredicateComparison]: unable to prove that (forall ((v_main_~D~0_9 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24)) (v_main_~X~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 ((_ to_fp 8 24) RNE 129.0)) (.cse2 (fp.sub RNE v_main_~X~0_5 main_~Y~0))) (or (not (fp.leq v_main_~X~0_5 .cse0)) (not (fp.geq v_main_~X~0_5 (fp.neg .cse0))) (not (fp.geq v_main_~D~0_9 (_ +zero 8 24))) (not (fp.leq main_~Y~0 .cse1)) (fp.leq .cse2 (fp.neg v_main_~D~0_9)) (not (fp.leq v_main_~D~0_9 ((_ to_fp 8 24) RNE 16.0))) (fp.leq (fp.add RNE main_~Y~0 v_main_~D~0_9) .cse1) (not (fp.geq main_~Y~0 (fp.neg .cse1))) (not (fp.geq .cse2 v_main_~D~0_9))))) is different from false [2018-09-19 15:50:38,918 WARN L819 $PredicateComparison]: unable to prove that (forall ((v_main_~D~0_9 (_ FloatingPoint 8 24)) (main_~Y~0 (_ FloatingPoint 8 24)) (v_main_~X~0_5 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 128.0)) (.cse1 ((_ to_fp 8 24) RNE 129.0)) (.cse2 (fp.sub RNE v_main_~X~0_5 main_~Y~0))) (or (not (fp.leq v_main_~X~0_5 .cse0)) (not (fp.geq v_main_~X~0_5 (fp.neg .cse0))) (not (fp.geq v_main_~D~0_9 (_ +zero 8 24))) (not (fp.leq main_~Y~0 .cse1)) (fp.leq .cse2 (fp.neg v_main_~D~0_9)) (not (fp.leq v_main_~D~0_9 ((_ to_fp 8 24) RNE 16.0))) (fp.leq (fp.add RNE main_~Y~0 v_main_~D~0_9) .cse1) (not (fp.geq main_~Y~0 (fp.neg .cse1))) (not (fp.geq .cse2 v_main_~D~0_9))))) is different from true [2018-09-19 15:50:38,930 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-19 15:50:38,931 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-19 15:50:38,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:50:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:50:41,519 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:51:06,853 WARN L178 SmtUtils]: Spent 2.61 s on a formula simplification that was a NOOP. DAG size: 26 [2018-09-19 15:51:09,327 WARN L819 $PredicateComparison]: unable to prove that (exists ((v_prenex_13 (_ FloatingPoint 8 24)) (v_prenex_12 (_ FloatingPoint 8 24)) (main_~X~0 (_ FloatingPoint 8 24)) (main_~D~0 (_ FloatingPoint 8 24))) (let ((.cse0 (fp.sub RNE ((_ to_fp 8 24) RNE (_ bv0 32)) v_prenex_13)) (.cse1 ((_ to_fp 8 24) RNE 16.0))) (and (fp.geq v_prenex_13 (_ +zero 8 24)) (fp.geq (fp.sub RNE main_~X~0 .cse0) main_~D~0) (fp.leq v_prenex_12 (fp.neg v_prenex_13)) (= (fp.add RNE .cse0 main_~D~0) c_main_~Y~0) (fp.leq v_prenex_13 .cse1) (fp.geq main_~D~0 (_ +zero 8 24)) (fp.leq main_~D~0 .cse1)))) is different from true [2018-09-19 15:51:21,688 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2018-09-19 15:51:21,688 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:51:23,723 WARN L819 $PredicateComparison]: unable to prove that (and (forall ((v_prenex_14 (_ FloatingPoint 8 24)) (v_prenex_15 (_ FloatingPoint 8 24))) (or (not (fp.leq v_prenex_15 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq (fp.sub RNE v_prenex_14 c_main_~Y~0) v_prenex_15)) (fp.geq (fp.add RNE c_main_~Y~0 v_prenex_15) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.geq v_prenex_15 (_ +zero 8 24))))) (forall ((v_main_~X~0_6 (_ FloatingPoint 8 24)) (v_main_~D~0_10 (_ FloatingPoint 8 24))) (or (not (fp.geq (fp.sub RNE v_main_~X~0_6 c_main_~Y~0) v_main_~D~0_10)) (not (fp.leq v_main_~D~0_10 ((_ to_fp 8 24) RNE 16.0))) (fp.leq (fp.add RNE c_main_~Y~0 v_main_~D~0_10) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_main_~D~0_10 (_ +zero 8 24)))))) is different from true [2018-09-19 15:51:25,820 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse2 ((_ to_fp 8 24) RNE 129.0))) (let ((.cse0 (not (fp.leq c_main_~Y~0 .cse2))) (.cse1 (not (fp.geq c_main_~Y~0 (fp.neg .cse2))))) (and (or (forall ((v_prenex_14 (_ FloatingPoint 8 24)) (v_prenex_15 (_ FloatingPoint 8 24))) (or (not (fp.leq v_prenex_15 ((_ to_fp 8 24) RNE 16.0))) (not (fp.geq (fp.sub RNE v_prenex_14 c_main_~Y~0) v_prenex_15)) (fp.geq (fp.add RNE c_main_~Y~0 v_prenex_15) (fp.neg ((_ to_fp 8 24) RNE 129.0))) (not (fp.geq v_prenex_15 (_ +zero 8 24))))) .cse0 .cse1) (or .cse0 (forall ((v_main_~X~0_6 (_ FloatingPoint 8 24)) (v_main_~D~0_10 (_ FloatingPoint 8 24))) (or (not (fp.geq (fp.sub RNE v_main_~X~0_6 c_main_~Y~0) v_main_~D~0_10)) (not (fp.leq v_main_~D~0_10 ((_ to_fp 8 24) RNE 16.0))) (fp.leq (fp.add RNE c_main_~Y~0 v_main_~D~0_10) ((_ to_fp 8 24) RNE 129.0)) (not (fp.geq v_main_~D~0_10 (_ +zero 8 24))))) .cse1)))) is different from true [2018-09-19 15:51:25,849 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:51:25,850 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 18 [2018-09-19 15:51:25,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-09-19 15:51:25,851 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-09-19 15:51:25,851 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=269, Unknown=35, NotChecked=234, Total=600 [2018-09-19 15:51:25,852 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 18 states. [2018-09-19 15:51:32,632 WARN L178 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 29 [2018-09-19 15:51:35,487 WARN L178 SmtUtils]: Spent 542.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2018-09-19 15:51:42,272 WARN L178 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 32 Received shutdown request... [2018-09-19 15:51:51,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-19 15:51:51,742 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 15:51:51,747 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 15:51:51,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 03:51:51 BoogieIcfgContainer [2018-09-19 15:51:51,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 15:51:51,749 INFO L168 Benchmark]: Toolchain (without parser) took 290141.71 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -452.6 MB). Peak memory consumption was 334.8 MB. Max. memory is 7.1 GB. [2018-09-19 15:51:51,750 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 15:51:51,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.99 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 15:51:51,752 INFO L168 Benchmark]: Boogie Preprocessor took 41.84 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 15:51:51,753 INFO L168 Benchmark]: RCFGBuilder took 696.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -834.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-09-19 15:51:51,754 INFO L168 Benchmark]: TraceAbstraction took 289117.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 371.6 MB). Peak memory consumption was 371.6 MB. Max. memory is 7.1 GB. [2018-09-19 15:51:51,758 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.99 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 41.84 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 696.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.5 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -834.8 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 289117.31 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 371.6 MB). Peak memory consumption was 371.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 5]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 5). Cancelled while BasicCegarLoop was constructing difference of abstraction (35states) and FLOYD_HOARE automaton (currently 7 states, 18 states before enhancement), while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 28 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. TIMEOUT Result, 289.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 51.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 84 SDtfs, 90 SDslu, 335 SDs, 0 SdLazy, 263 SolverSat, 30 SolverUnsat, 7 SolverUnknown, 0 SolverNotchecked, 22.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 168 GetRequests, 97 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 220.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=4, 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, 4 MinimizatonAttempts, 43 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 5.7s SatisfiabilityAnalysisTime, 231.1s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 117 ConstructedInterpolants, 27 QuantifiedInterpolants, 22690 SizeOfPredicates, 43 NumberOfNonLiveVariables, 304 ConjunctsInSsa, 86 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 8/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown