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/exp_loop_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-2c62905 [2018-09-19 15:40:57,185 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-19 15:40:57,187 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-19 15:40:57,206 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-19 15:40:57,207 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-19 15:40:57,209 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-19 15:40:57,210 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-19 15:40:57,212 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-19 15:40:57,215 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-19 15:40:57,218 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-19 15:40:57,219 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-19 15:40:57,219 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-19 15:40:57,222 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-19 15:40:57,223 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-19 15:40:57,224 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-19 15:40:57,233 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-19 15:40:57,234 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-19 15:40:57,236 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-19 15:40:57,238 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-19 15:40:57,239 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-19 15:40:57,240 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-19 15:40:57,241 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-19 15:40:57,243 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-19 15:40:57,252 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 15:40:57,267 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-19 15:40:57,267 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-19 15:40:57,268 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-19 15:40:57,268 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-09-19 15:40:57,269 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-09-19 15:40:57,269 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-09-19 15:40:57,269 INFO L133 SettingsManager]: * Use SBE=true [2018-09-19 15:40:57,270 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-19 15:40:57,270 INFO L133 SettingsManager]: * sizeof long=4 [2018-09-19 15:40:57,270 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-09-19 15:40:57,270 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-19 15:40:57,271 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-19 15:40:57,271 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-19 15:40:57,271 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-19 15:40:57,271 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-09-19 15:40:57,271 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-09-19 15:40:57,272 INFO L133 SettingsManager]: * sizeof long double=12 [2018-09-19 15:40:57,272 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-19 15:40:57,272 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-19 15:40:57,272 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-19 15:40:57,272 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-19 15:40:57,273 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-19 15:40:57,273 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-19 15:40:57,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-19 15:40:57,273 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-19 15:40:57,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-19 15:40:57,274 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-19 15:40:57,274 INFO L133 SettingsManager]: * Trace refinement strategy=WOLF [2018-09-19 15:40:57,274 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-19 15:40:57,274 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-09-19 15:40:57,274 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-09-19 15:40:57,275 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-19 15:40:57,323 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-19 15:40:57,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-19 15:40:57,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-19 15:40:57,342 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-19 15:40:57,343 INFO L276 PluginConnector]: CDTParser initialized [2018-09-19 15:40:57,343 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/exp_loop_true-unreach-call.c [2018-09-19 15:40:57,689 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d8d624ec/c60a05a9fdf84d009b6241cb52b42a81/FLAGcad77ecda [2018-09-19 15:40:57,843 INFO L277 CDTParser]: Found 1 translation units. [2018-09-19 15:40:57,844 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/exp_loop_true-unreach-call.c [2018-09-19 15:40:57,851 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d8d624ec/c60a05a9fdf84d009b6241cb52b42a81/FLAGcad77ecda [2018-09-19 15:40:57,866 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d8d624ec/c60a05a9fdf84d009b6241cb52b42a81 [2018-09-19 15:40:57,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-19 15:40:57,880 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-09-19 15:40:57,882 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-19 15:40:57,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-19 15:40:57,889 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-19 15:40:57,890 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:40:57" (1/1) ... [2018-09-19 15:40:57,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f6dd776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:57, skipping insertion in model container [2018-09-19 15:40:57,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.09 03:40:57" (1/1) ... [2018-09-19 15:40:57,906 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-19 15:40:58,136 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:40:58,167 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-19 15:40:58,182 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-19 15:40:58,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58 WrapperNode [2018-09-19 15:40:58,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-19 15:40:58,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-19 15:40:58,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-19 15:40:58,208 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-19 15:40:58,226 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (1/1) ... [2018-09-19 15:40:58,227 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (1/1) ... [2018-09-19 15:40:58,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (1/1) ... [2018-09-19 15:40:58,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (1/1) ... [2018-09-19 15:40:58,262 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (1/1) ... [2018-09-19 15:40:58,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (1/1) ... [2018-09-19 15:40:58,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (1/1) ... [2018-09-19 15:40:58,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-19 15:40:58,289 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-19 15:40:58,289 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-19 15:40:58,290 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-19 15:40:58,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (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 15:40:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-19 15:40:58,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-19 15:40:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-19 15:40:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure FABS [2018-09-19 15:40:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure FREXP [2018-09-19 15:40:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure LDEXP [2018-09-19 15:40:58,364 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-19 15:40:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-09-19 15:40:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2018-09-19 15:40:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2018-09-19 15:40:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-19 15:40:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure FABS [2018-09-19 15:40:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure FREXP [2018-09-19 15:40:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-09-19 15:40:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure LDEXP [2018-09-19 15:40:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-19 15:40:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-09-19 15:40:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-09-19 15:40:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-09-19 15:40:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-19 15:40:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-19 15:40:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-09-19 15:41:00,318 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-19 15:41:00,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:41:00 BoogieIcfgContainer [2018-09-19 15:41:00,319 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-19 15:41:00,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-19 15:41:00,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-19 15:41:00,324 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-19 15:41:00,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.09 03:40:57" (1/3) ... [2018-09-19 15:41:00,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ea75fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:41:00, skipping insertion in model container [2018-09-19 15:41:00,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.09 03:40:58" (2/3) ... [2018-09-19 15:41:00,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63ea75fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.09 03:41:00, skipping insertion in model container [2018-09-19 15:41:00,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.09 03:41:00" (3/3) ... [2018-09-19 15:41:00,328 INFO L112 eAbstractionObserver]: Analyzing ICFG exp_loop_true-unreach-call.c [2018-09-19 15:41:00,338 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-19 15:41:00,345 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-19 15:41:00,395 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-19 15:41:00,396 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-19 15:41:00,396 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-19 15:41:00,397 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-19 15:41:00,397 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-19 15:41:00,397 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-19 15:41:00,398 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-19 15:41:00,398 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-19 15:41:00,398 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-19 15:41:00,419 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2018-09-19 15:41:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-09-19 15:41:00,427 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:41:00,429 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:41:00,432 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:41:00,437 INFO L82 PathProgramCache]: Analyzing trace with hash 1774444175, now seen corresponding path program 1 times [2018-09-19 15:41:00,443 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:41:00,444 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 15:41:00,457 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:41:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:41:00,792 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:41:00,820 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 15:41:00,820 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:41:00,840 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:41:00,840 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-19 15:41:00,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-19 15:41:00,860 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-19 15:41:00,861 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-19 15:41:00,864 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2018-09-19 15:41:00,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-19 15:41:00,891 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2018-09-19 15:41:00,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-19 15:41:00,892 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 36 [2018-09-19 15:41:00,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-19 15:41:00,901 INFO L225 Difference]: With dead ends: 85 [2018-09-19 15:41:00,901 INFO L226 Difference]: Without dead ends: 44 [2018-09-19 15:41:00,905 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 35 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 15:41:00,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-09-19 15:41:00,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2018-09-19 15:41:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2018-09-19 15:41:00,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2018-09-19 15:41:00,947 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 36 [2018-09-19 15:41:00,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-19 15:41:00,948 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2018-09-19 15:41:00,948 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-19 15:41:00,948 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2018-09-19 15:41:00,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-09-19 15:41:00,950 INFO L368 BasicCegarLoop]: Found error trace [2018-09-19 15:41:00,950 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-19 15:41:00,951 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-19 15:41:00,951 INFO L82 PathProgramCache]: Analyzing trace with hash 301196167, now seen corresponding path program 1 times [2018-09-19 15:41:00,952 INFO L227 ckRefinementStrategy]: Switched to mode MATHSAT_FPBP [2018-09-19 15:41:00,952 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 15:41:00,961 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-19 15:41:01,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-19 15:41:01,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-19 15:41:06,044 WARN L178 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-19 15:41:15,447 WARN L178 SmtUtils]: Spent 1.31 s on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 15:41:26,814 WARN L178 SmtUtils]: Spent 892.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2018-09-19 15:41:59,266 WARN L178 SmtUtils]: Spent 1.71 s on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 15:42:31,703 WARN L178 SmtUtils]: Spent 1.89 s on a formula simplification that was a NOOP. DAG size: 21 [2018-09-19 15:42:46,432 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 15:42:46,432 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-09-19 15:42:46,456 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-19 15:42:46,456 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2018-09-19 15:42:46,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-09-19 15:42:46,458 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-09-19 15:42:46,459 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=301, Unknown=3, NotChecked=0, Total=342 [2018-09-19 15:42:46,460 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 19 states. [2018-09-19 15:44:12,710 WARN L178 SmtUtils]: Spent 3.74 s on a formula simplification. DAG size of input: 22 DAG size of output: 19 [2018-09-19 15:44:37,771 WARN L178 SmtUtils]: Spent 3.47 s on a formula simplification that was a NOOP. DAG size: 19 [2018-09-19 15:45:11,511 WARN L178 SmtUtils]: Spent 7.06 s on a formula simplification that was a NOOP. DAG size: 19 [2018-09-19 15:45:34,345 WARN L178 SmtUtils]: Spent 296.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-09-19 15:45:47,900 WARN L797 $PredicateComparison]: unable to prove that (and (fp.geq ((_ to_fp 11 53) RNE c_main_~a~0) ((_ to_fp 11 53) RNE (/ 1.0 10000000000.0))) (exists ((main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse0 ((_ to_fp 8 24) RNE 2.0))) (and (fp.geq ((_ to_fp 11 53) RNE main_~a~0) ((_ to_fp 11 53) RNE (/ 1.0 10000000000.0))) (fp.geq main_~a~0 ((_ to_fp 8 24) RNE 1.0)) (= (fp.div RNE main_~a~0 .cse0) c_main_~b~0) (not (fp.leq .cse0 main_~a~0))))) (exists ((main_~a~0 (_ FloatingPoint 8 24))) (let ((.cse1 ((_ to_fp 8 24) RNE 2.0))) (and (fp.geq ((_ to_fp 11 53) RNE main_~a~0) ((_ to_fp 11 53) RNE (/ 1.0 10000000000.0))) (= (fp.mul RNE (fp.div RNE main_~a~0 .cse1) ((_ to_fp 8 24) RNE ((_ to_fp 11 53) RNE 1.0))) |c_main_#t~ret8|) (fp.geq main_~a~0 ((_ to_fp 8 24) RNE 1.0)) (not (fp.leq .cse1 main_~a~0)))))) is different from false Received shutdown request... [2018-09-19 15:45:48,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-09-19 15:45:48,826 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-19 15:45:48,833 WARN L206 ceAbstractionStarter]: Timeout [2018-09-19 15:45:48,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.09 03:45:48 BoogieIcfgContainer [2018-09-19 15:45:48,833 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-19 15:45:48,834 INFO L168 Benchmark]: Toolchain (without parser) took 290956.53 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -569.4 MB). Peak memory consumption was 159.9 MB. Max. memory is 7.1 GB. [2018-09-19 15:45:48,836 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-19 15:45:48,836 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-09-19 15:45:48,837 INFO L168 Benchmark]: Boogie Preprocessor took 80.79 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 15:45:48,838 INFO L168 Benchmark]: RCFGBuilder took 2030.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-09-19 15:45:48,839 INFO L168 Benchmark]: TraceAbstraction took 288513.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 195.6 MB). Peak memory consumption was 195.6 MB. Max. memory is 7.1 GB. [2018-09-19 15:45:48,843 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 326.06 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 80.79 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 2030.20 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 729.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -775.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 288513.16 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 195.6 MB). Peak memory consumption was 195.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 9]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 9). Cancelled while BasicCegarLoop was constructing difference of abstraction (44states) and FLOYD_HOARE automaton (currently 16 states, 19 states before enhancement), while ReachableStatesComputation was computing reachable states (67 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 53 locations, 1 error locations. TIMEOUT Result, 288.4s OverallTime, 2 OverallIterations, 1 TraceHistogramMax, 182.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 87 SDtfs, 59 SDslu, 393 SDs, 0 SdLazy, 289 SolverSat, 6 SolverUnsat, 14 SolverUnknown, 0 SolverNotchecked, 102.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 82 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 181.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=53occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 105.1s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 72 ConstructedInterpolants, 5 QuantifiedInterpolants, 14841 SizeOfPredicates, 10 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown