/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:02:14,726 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:02:14,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:02:14,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:02:14,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:02:14,743 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:02:14,744 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:02:14,746 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:02:14,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:02:14,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:02:14,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:02:14,750 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:02:14,750 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:02:14,751 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:02:14,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:02:14,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:02:14,754 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:02:14,755 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:02:14,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:02:14,758 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:02:14,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:02:14,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:02:14,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:02:14,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:02:14,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:02:14,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:02:14,774 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:02:14,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:02:14,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:02:14,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:02:14,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:02:14,786 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:02:14,786 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:02:14,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:02:14,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:02:14,787 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:02:14,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:02:14,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:02:14,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:02:14,787 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:02:14,788 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:02:14,788 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:02:14,788 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:02:14,788 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:02:14,789 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:02:14,789 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:02:14,789 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:02:14,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:02:14,789 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:02:14,790 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:02:14,790 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:02:14,790 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:02:15,065 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:02:15,082 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:02:15,086 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:02:15,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:02:15,088 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:02:15,089 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-07 13:02:15,164 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8427a7914/a3dfe0f6b9c24268ad527b875a022e59/FLAG32b07833f [2020-07-07 13:02:15,621 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:02:15,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-07-07 13:02:15,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8427a7914/a3dfe0f6b9c24268ad527b875a022e59/FLAG32b07833f [2020-07-07 13:02:15,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8427a7914/a3dfe0f6b9c24268ad527b875a022e59 [2020-07-07 13:02:16,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:02:16,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:02:16,009 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:16,009 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:02:16,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:02:16,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:15" (1/1) ... [2020-07-07 13:02:16,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98b2117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16, skipping insertion in model container [2020-07-07 13:02:16,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:02:15" (1/1) ... [2020-07-07 13:02:16,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:02:16,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:02:16,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:16,275 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:02:16,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:02:16,427 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:02:16,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16 WrapperNode [2020-07-07 13:02:16,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:02:16,428 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:02:16,428 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:02:16,428 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:02:16,438 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,438 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,448 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,449 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (1/1) ... [2020-07-07 13:02:16,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:02:16,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:02:16,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:02:16,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:02:16,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (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 [2020-07-07 13:02:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:02:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:02:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-07 13:02:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-07-07 13:02:16,548 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:02:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:02:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-07 13:02:16,549 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-07 13:02:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:02:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:02:16,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:02:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:02:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:02:16,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:02:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-07-07 13:02:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:02:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:02:16,552 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-07 13:02:16,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:02:17,111 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:02:17,111 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-07 13:02:17,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:17 BoogieIcfgContainer [2020-07-07 13:02:17,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:02:17,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:02:17,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:02:17,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:02:17,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:02:15" (1/3) ... [2020-07-07 13:02:17,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d20712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:17, skipping insertion in model container [2020-07-07 13:02:17,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:02:16" (2/3) ... [2020-07-07 13:02:17,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28d20712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:02:17, skipping insertion in model container [2020-07-07 13:02:17,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:02:17" (3/3) ... [2020-07-07 13:02:17,127 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-07-07 13:02:17,139 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:02:17,147 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:02:17,163 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:02:17,187 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:02:17,187 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:02:17,187 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:02:17,187 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:02:17,188 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:02:17,188 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:02:17,188 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:02:17,188 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:02:17,211 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-07-07 13:02:17,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-07 13:02:17,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:17,226 INFO L422 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:02:17,227 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:17,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:17,235 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-07-07 13:02:17,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:17,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735812398] [2020-07-07 13:02:17,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:02:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:02:17,540 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:17,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735812398] [2020-07-07 13:02:17,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:02:17,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:02:17,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327063639] [2020-07-07 13:02:17,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:02:17,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:02:17,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:02:17,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:02:17,575 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-07-07 13:02:18,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:02:18,009 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-07-07 13:02:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:02:18,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-07-07 13:02:18,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:02:18,024 INFO L225 Difference]: With dead ends: 306 [2020-07-07 13:02:18,024 INFO L226 Difference]: Without dead ends: 155 [2020-07-07 13:02:18,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:02:18,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-07-07 13:02:18,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-07-07 13:02:18,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-07-07 13:02:18,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-07-07 13:02:18,089 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-07-07 13:02:18,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:02:18,090 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-07-07 13:02:18,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:02:18,090 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-07-07 13:02:18,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-07-07 13:02:18,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:02:18,093 INFO L422 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, 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] [2020-07-07 13:02:18,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:02:18,094 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:02:18,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:02:18,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-07-07 13:02:18,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:02:18,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [208782397] [2020-07-07 13:02:18,095 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:02:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:02:18,428 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:02:18,428 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:02:18,428 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:02:18,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:02:18,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:02:18 BoogieIcfgContainer [2020-07-07 13:02:18,481 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:02:18,485 INFO L168 Benchmark]: Toolchain (without parser) took 2476.50 ms. Allocated memory was 142.6 MB in the beginning and 228.1 MB in the end (delta: 85.5 MB). Free memory was 100.4 MB in the beginning and 158.8 MB in the end (delta: -58.4 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:18,486 INFO L168 Benchmark]: CDTParser took 0.88 ms. Allocated memory is still 142.6 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:02:18,488 INFO L168 Benchmark]: CACSL2BoogieTranslator took 419.31 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 175.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:18,489 INFO L168 Benchmark]: Boogie Preprocessor took 51.29 ms. Allocated memory is still 199.8 MB. Free memory was 175.7 MB in the beginning and 173.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:18,490 INFO L168 Benchmark]: RCFGBuilder took 638.19 ms. Allocated memory is still 199.8 MB. Free memory was 173.6 MB in the beginning and 137.0 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:18,492 INFO L168 Benchmark]: TraceAbstraction took 1362.24 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 137.0 MB in the beginning and 158.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:02:18,501 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.88 ms. Allocated memory is still 142.6 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 419.31 ms. Allocated memory was 142.6 MB in the beginning and 199.8 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 175.7 MB in the end (delta: -75.5 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.29 ms. Allocated memory is still 199.8 MB. Free memory was 175.7 MB in the beginning and 173.6 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 638.19 ms. Allocated memory is still 199.8 MB. Free memory was 173.6 MB in the beginning and 137.0 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1362.24 ms. Allocated memory was 199.8 MB in the beginning and 228.1 MB in the end (delta: 28.3 MB). Free memory was 137.0 MB in the beginning and 158.8 MB in the end (delta: -21.8 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 32, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...