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-esbmc-regression/Double_div_true-unreach-call.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:52:48,191 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:52:48,194 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:52:48,208 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:52:48,208 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:52:48,209 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:52:48,211 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:52:48,213 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:52:48,215 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:52:48,216 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:52:48,217 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:52:48,217 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:52:48,218 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:52:48,219 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:52:48,221 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:52:48,222 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:52:48,223 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:52:48,225 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:52:48,227 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:52:48,229 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:52:48,230 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:52:48,231 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:52:48,234 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 15:52:48,242 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-19 15:52:48,242 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-19 15:52:48,243 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-19 15:52:48,244 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-19 15:52:48,245 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 15:52:48,261 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:52:48,261 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:52:48,262 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:52:48,263 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:52:48,263 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:52:48,264 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:52:48,264 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:52:48,264 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:52:48,264 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:52:48,265 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:52:48,265 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:52:48,265 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:52:48,265 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:52:48,265 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:52:48,266 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:52:48,266 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:52:48,266 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:52:48,266 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:52:48,267 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:52:48,267 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:52:48,267 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:52:48,267 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:52:48,267 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:52:48,268 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:52:48,268 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:52:48,268 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:52:48,268 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:52:48,269 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:52:48,269 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:52:48,269 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:52:48,269 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:52:48,269 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:52:48,345 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:52:48,364 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:52:48,370 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:52:48,372 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:52:48,373 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:52:48,374 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-09-19 15:52:48,772 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0aa42da7/12d293a798d64010b869706d50d6ae03/FLAGf91cb5686 [2018-09-19 15:52:48,933 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:52:48,934 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-esbmc-regression/Double_div_true-unreach-call.i [2018-09-19 15:52:48,940 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0aa42da7/12d293a798d64010b869706d50d6ae03/FLAGf91cb5686 [2018-09-19 15:52:48,957 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d0aa42da7/12d293a798d64010b869706d50d6ae03 [2018-09-19 15:52:48,968 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:52:48,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:52:48,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:52:48,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:52:48,980 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:52:48,981 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:52:48" (1/1) ... [2018-09-19 15:52:48,984 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f45801e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:48, skipping insertion in model container [2018-09-19 15:52:48,984 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:52:48" (1/1) ... [2018-09-19 15:52:48,998 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:52:49,211 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:52:49,239 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:52:49,243 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:52:49,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49 WrapperNode [2018-09-19 15:52:49,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:52:49,267 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:52:49,267 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:52:49,267 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:52:49,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (1/1) ... [2018-09-19 15:52:49,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (1/1) ... [2018-09-19 15:52:49,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (1/1) ... [2018-09-19 15:52:49,300 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (1/1) ... [2018-09-19 15:52:49,303 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (1/1) ... [2018-09-19 15:52:49,309 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (1/1) ... [2018-09-19 15:52:49,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (1/1) ... [2018-09-19 15:52:49,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:52:49,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:52:49,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:52:49,327 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:52:49,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (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 15:52:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:52:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:52:49,413 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 15:52:49,414 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:52:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:52:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 15:52:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:52:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:52:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:52:50,667 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 15:52:50,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:52:50 BoogieIcfgContainer [2018-09-19 15:52:50,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 15:52:50,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 15:52:50,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 15:52:50,672 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 15:52:50,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:52:48" (1/3) ... [2018-09-19 15:52:50,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19da7aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:52:50, skipping insertion in model container [2018-09-19 15:52:50,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:52:49" (2/3) ... [2018-09-19 15:52:50,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19da7aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:52:50, skipping insertion in model container [2018-09-19 15:52:50,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:52:50" (3/3) ... [2018-09-19 15:52:50,677 INFO L112 eAbstractionObserver]: Analyzing ICFG Double_div_true-unreach-call.i [2018-09-19 15:52:50,687 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 15:52:50,695 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 15:52:50,747 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 15:52:50,748 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 15:52:50,748 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 15:52:50,748 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 15:52:50,748 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 15:52:50,749 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 15:52:50,749 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 15:52:50,749 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 15:52:50,749 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 15:52:50,768 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-19 15:52:50,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-19 15:52:50,774 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:52:50,775 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:52:50,778 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:52:50,784 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-09-19 15:52:50,789 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:52:50,790 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 15:52:50,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:52:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:52:51,120 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:52:51,138 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 15:52:51,138 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:52:51,155 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:52:51,155 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 15:52:51,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 15:52:51,173 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 15:52:51,173 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:52:51,176 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-19 15:52:51,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:52:51,215 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-09-19 15:52:51,215 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 15:52:51,217 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-19 15:52:51,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:52:51,226 INFO L225 Difference]: With dead ends: 31 [2018-09-19 15:52:51,227 INFO L226 Difference]: Without dead ends: 12 [2018-09-19 15:52:51,230 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:52:51,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-19 15:52:51,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-19 15:52:51,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-19 15:52:51,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-19 15:52:51,269 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-19 15:52:51,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:52:51,270 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-19 15:52:51,270 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 15:52:51,270 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-19 15:52:51,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-19 15:52:51,271 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:52:51,271 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:52:51,272 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:52:51,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-09-19 15:52:51,273 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:52:51,273 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) [2018-09-19 15:52:51,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2018-09-19 15:52:51,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:52:51,493 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:52:54,522 WARN L178 SmtUtils]: Spent 3.00 s on a formula simplification that was a NOOP. DAG size: 11 [2018-09-19 15:52:54,535 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 15:52:54,535 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:52:54,557 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:52:54,558 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-19 15:52:54,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-19 15:52:54,560 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-19 15:52:54,560 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:52:54,561 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-19 15:52:56,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:52:56,652 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-19 15:52:57,497 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-19 15:52:57,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-19 15:52:57,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:52:57,499 INFO L225 Difference]: With dead ends: 19 [2018-09-19 15:52:57,499 INFO L226 Difference]: Without dead ends: 14 [2018-09-19 15:52:57,500 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-19 15:52:57,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-19 15:52:57,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-19 15:52:57,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-19 15:52:57,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-19 15:52:57,505 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-19 15:52:57,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:52:57,506 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-19 15:52:57,506 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-19 15:52:57,506 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-19 15:52:57,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-19 15:52:57,507 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:52:57,507 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:52:57,507 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:52:57,508 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-09-19 15:52:57,508 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:52:57,508 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 15:52:57,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:52:57,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:52:57,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:53:00,175 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div RNE c_main_~x~0 .cse0)) (= (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) c_main_~x~0))) is different from true [2018-09-19 15:53:00,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2018-09-19 15:53:00,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:53:11,336 WARN L178 SmtUtils]: Spent 2.94 s on a formula simplification that was a NOOP. DAG size: 7 [2018-09-19 15:53:11,350 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:53:11,377 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:53:11,378 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2018-09-19 15:53:11,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-19 15:53:11,379 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-19 15:53:11,379 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=11, Unknown=3, NotChecked=6, Total=30 [2018-09-19 15:53:11,379 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-09-19 15:53:18,942 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (not (fp.eq (fp.div RNE c_main_~x1~0 .cse0) c_main_~x1~0)) (= c_main_~x1~0 (fp.div RNE c_main_~x~0 .cse0)) (= (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) c_main_~x~0) (not (fp.eq c_main_~x1~0 c_main_~x~0)))) is different from true [2018-09-19 15:53:28,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:53:28,399 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2018-09-19 15:53:28,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-19 15:53:28,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-09-19 15:53:28,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:53:28,661 INFO L225 Difference]: With dead ends: 23 [2018-09-19 15:53:28,661 INFO L226 Difference]: Without dead ends: 18 [2018-09-19 15:53:28,662 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=17, Invalid=16, Unknown=5, NotChecked=18, Total=56 [2018-09-19 15:53:28,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-19 15:53:28,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-19 15:53:28,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-19 15:53:28,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-19 15:53:28,668 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 13 [2018-09-19 15:53:28,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:53:28,669 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-19 15:53:28,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-19 15:53:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-19 15:53:28,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-19 15:53:28,670 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:53:28,670 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:53:28,670 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:53:28,671 INFO L82 PathProgramCache]: Analyzing trace with hash 2058417419, now seen corresponding path program 2 times [2018-09-19 15:53:28,671 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:53:28,671 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 15:53:28,678 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-09-19 15:53:29,421 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-19 15:53:29,421 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:53:29,491 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:53:38,886 WARN L178 SmtUtils]: Spent 2.96 s on a formula simplification that was a NOOP. DAG size: 14 [2018-09-19 15:53:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-19 15:53:38,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:53:50,792 WARN L819 $PredicateComparison]: unable to prove that (or (not (fp.eq (fp.div RNE c_main_~x1~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) RNE (_ bv0 32)))) is different from true [2018-09-19 15:53:53,298 WARN L797 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE c_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0))))) is different from false [2018-09-19 15:53:57,498 WARN L797 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from false [2018-09-19 15:54:00,264 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse1) .cse1))) (or (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from true [2018-09-19 15:54:00,285 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 12 not checked. [2018-09-19 15:54:00,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-09-19 15:54:00,309 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2018-09-19 15:54:00,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-19 15:54:00,309 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-19 15:54:00,310 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=69, Unknown=8, NotChecked=54, Total=156 [2018-09-19 15:54:00,310 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 13 states. [2018-09-19 15:54:03,110 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (_ bv0 32))) (.cse0 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0)) (or (fp.eq c_main_~x~0 .cse1) (not (fp.eq c_main_~x1~0 c_main_~x~0))) (let ((.cse2 (fp.div RNE (fp.div RNE c_main_~x1~0 .cse0) .cse0))) (or (not (fp.eq (fp.div RNE .cse2 .cse0) .cse2)) (fp.eq .cse2 .cse1))))) is different from true [2018-09-19 15:54:05,645 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (let ((.cse0 (fp.div RNE c_main_~x1~0 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)))) (= c_main_~x1~0 (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse1) .cse1)))) is different from true [2018-09-19 15:54:07,916 WARN L819 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (and (= c_main_~x1~0 (fp.div RNE (fp.div RNE (fp.div RNE ((_ to_fp 11 53) RNE 1.0) .cse0) .cse0) .cse0)) (or (not (fp.eq (fp.div RNE c_main_~x1~0 .cse0) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) RNE (_ bv0 32)))))) is different from true [2018-09-19 15:54:19,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:54:19,976 INFO L93 Difference]: Finished difference Result 30 states and 31 transitions. [2018-09-19 15:54:19,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-09-19 15:54:19,988 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 17 [2018-09-19 15:54:19,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:54:19,989 INFO L225 Difference]: With dead ends: 30 [2018-09-19 15:54:19,989 INFO L226 Difference]: Without dead ends: 22 [2018-09-19 15:54:19,990 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 40.6s TimeCoverageRelationStatistics Valid=35, Invalid=88, Unknown=11, NotChecked=138, Total=272 [2018-09-19 15:54:19,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-19 15:54:19,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-19 15:54:19,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-19 15:54:19,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-09-19 15:54:20,000 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 17 [2018-09-19 15:54:20,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:54:20,000 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-09-19 15:54:20,001 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-09-19 15:54:20,001 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-09-19 15:54:20,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-19 15:54:20,002 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:54:20,003 INFO L376 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:54:20,003 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:54:20,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1566812823, now seen corresponding path program 3 times [2018-09-19 15:54:20,005 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:54:20,005 INFO L69 tionRefinementEngine]: Using refinement strategy WolfRefinementStrategy No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2018-09-19 15:54:20,015 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-09-19 15:54:20,877 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-19 15:54:20,878 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-19 15:54:20,948 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:54:28,434 WARN L178 SmtUtils]: Spent 4.52 s on a formula simplification that was a NOOP. DAG size: 7 [2018-09-19 15:54:30,958 WARN L797 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= c_main_~x~0 (fp.div RNE v_main_~x~0_13 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (= c_main_~x1~0 (fp.div RNE c_main_~x~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))))) is different from false [2018-09-19 15:54:33,399 WARN L819 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= c_main_~x~0 (fp.div RNE v_main_~x~0_13 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (= c_main_~x1~0 (fp.div RNE c_main_~x~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))))) is different from true [2018-09-19 15:54:35,930 WARN L797 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= c_main_~x~0 (fp.div RNE v_main_~x~0_13 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (fp.eq (fp.div RNE c_main_~x~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~x~0)) is different from false [2018-09-19 15:54:38,190 WARN L819 $PredicateComparison]: unable to prove that (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (and (= c_main_~x~0 (fp.div RNE v_main_~x~0_13 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (not (fp.eq c_main_~x~0 v_main_~x~0_13)))) (fp.eq (fp.div RNE c_main_~x~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~x~0)) is different from true [2018-09-19 15:54:51,213 WARN L797 $PredicateComparison]: unable to prove that (or (and (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_prenex_2 .cse1))) (and (not (fp.eq .cse0 v_prenex_2)) (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))))) (= |c___VERIFIER_assert_#in~cond| (_ bv0 32))) (and (= (bvadd |c___VERIFIER_assert_#in~cond| (_ bv4294967295 32)) (_ bv0 32)) (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse2 (fp.div RNE v_main_~x~0_13 .cse3))) (and (not (fp.eq .cse2 v_main_~x~0_13)) (fp.eq (fp.div RNE .cse2 .cse3) .cse2) (fp.eq .cse2 ((_ to_fp 11 53) RNE (_ bv0 32))))))))) is different from false [2018-09-19 15:55:04,197 WARN L797 $PredicateComparison]: unable to prove that (or (and (= (_ bv0 32) c___VERIFIER_assert_~cond) (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_prenex_2 .cse1))) (and (not (fp.eq .cse0 v_prenex_2)) (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))))))))) (and (exists ((v_main_~x~0_13 (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse2 (fp.div RNE v_main_~x~0_13 .cse3))) (and (not (fp.eq .cse2 v_main_~x~0_13)) (fp.eq (fp.div RNE .cse2 .cse3) .cse2) (fp.eq .cse2 ((_ to_fp 11 53) RNE (_ bv0 32))))))) (= (bvadd c___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32)))) is different from false [2018-09-19 15:55:11,751 WARN L797 $PredicateComparison]: unable to prove that (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_prenex_2 .cse1))) (and (not (fp.eq .cse0 v_prenex_2)) (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from false [2018-09-19 15:55:14,181 WARN L819 $PredicateComparison]: unable to prove that (exists ((v_prenex_2 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_prenex_2 .cse1))) (and (not (fp.eq .cse0 v_prenex_2)) (fp.eq (fp.div RNE .cse0 .cse1) .cse0) (not (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32)))))))) is different from true [2018-09-19 15:55:14,185 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 2 not checked. [2018-09-19 15:55:14,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-19 15:55:30,520 WARN L797 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~x1~0 c_main_~x~0) (not (fp.eq (fp.div RNE c_main_~x1~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) RNE (_ bv0 32)))) is different from false [2018-09-19 15:55:32,764 WARN L819 $PredicateComparison]: unable to prove that (or (fp.eq c_main_~x1~0 c_main_~x~0) (not (fp.eq (fp.div RNE c_main_~x1~0 ((_ to_fp 11 53) RNE (/ 5.0 2.0))) c_main_~x1~0)) (fp.eq c_main_~x1~0 ((_ to_fp 11 53) RNE (_ bv0 32)))) is different from true [2018-09-19 15:55:40,239 WARN L797 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_15 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~x~0_15 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 v_main_~x~0_15))))) is different from false [2018-09-19 15:55:42,750 WARN L819 $PredicateComparison]: unable to prove that (forall ((v_main_~x~0_15 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) RNE (/ 5.0 2.0)))) (let ((.cse0 (fp.div RNE v_main_~x~0_15 .cse1))) (or (fp.eq .cse0 ((_ to_fp 11 53) RNE (_ bv0 32))) (not (fp.eq (fp.div RNE .cse0 .cse1) .cse0)) (fp.eq .cse0 v_main_~x~0_15))))) is different from true [2018-09-19 15:56:32,763 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-19 15:56:32,764 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-19 15:56:32,772 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-19 15:57:28,700 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-09-19 15:57:28,701 INFO L243 tOrderPrioritization]: Conjunction of SSA is unknown [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Forcibly destroying the process [2018-09-19 15:57:30,281 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2018-09-19 15:57:30,281 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2018-09-19 15:57:30,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-19 15:57:30,282 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-19 15:57:30,282 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=27, Unknown=17, NotChecked=112, Total=182 [2018-09-19 15:57:30,283 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2018-09-19 15:57:33,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:57:33,026 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-09-19 15:57:33,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-19 15:57:33,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2018-09-19 15:57:33,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:57:33,530 INFO L225 Difference]: With dead ends: 22 [2018-09-19 15:57:33,530 INFO L226 Difference]: Without dead ends: 0 [2018-09-19 15:57:33,531 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.6s TimeCoverageRelationStatistics Valid=26, Invalid=27, Unknown=17, NotChecked=112, Total=182 [2018-09-19 15:57:33,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-19 15:57:33,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-19 15:57:33,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-19 15:57:33,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-19 15:57:33,532 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-09-19 15:57:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:57:33,532 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-19 15:57:33,533 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-19 15:57:33,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-19 15:57:33,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-19 15:57:33,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. Received shutdown request... [2018-09-19 15:57:43,041 WARN L186 SmtUtils]: Removed 2 from assertion stack [2018-09-19 15:57:43,042 INFO L256 ToolchainWalker]: Toolchain cancelled while executing plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction. Reason: Timeout or Toolchain cancelled by user [2018-09-19 15:57:43,043 INFO L168 Benchmark]: Toolchain (without parser) took 294074.36 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -637.6 MB). Peak memory consumption was 112.1 MB. Max. memory is 7.1 GB. [2018-09-19 15:57:43,049 INFO L168 Benchmark]: CDTParser took 0.30 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 15:57:43,050 INFO L168 Benchmark]: CACSL2BoogieTranslator took 293.68 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 15:57:43,051 INFO L168 Benchmark]: Boogie Preprocessor took 58.88 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 15:57:43,051 INFO L168 Benchmark]: RCFGBuilder took 1341.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. [2018-09-19 15:57:43,057 INFO L168 Benchmark]: TraceAbstraction took 292373.35 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: 153.3 MB). Peak memory consumption was 153.3 MB. Max. memory is 7.1 GB. [2018-09-19 15:57:43,066 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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 293.68 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 58.88 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 1341.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 749.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -801.5 MB). Peak memory consumption was 26.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 292373.35 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: 153.3 MB). Peak memory consumption was 153.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 2]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - TimeoutResult: Timeout (de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction) Toolchain cancelled while SimplifyDDAWithTimeout was simplifying term of DAG size 18. RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown