/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:04:14,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:04:14,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:04:14,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:04:14,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:04:14,171 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:04:14,173 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:04:14,175 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:04:14,176 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:04:14,177 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:04:14,178 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:04:14,179 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:04:14,179 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:04:14,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:04:14,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:04:14,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:04:14,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:04:14,184 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:04:14,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:04:14,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:04:14,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:04:14,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:04:14,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:04:14,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:04:14,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:04:14,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:04:14,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:04:14,194 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:04:14,195 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:04:14,196 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:04:14,196 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:04:14,197 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:04:14,197 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:04:14,198 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:04:14,199 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:04:14,199 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:04:14,200 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:04:14,200 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:04:14,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:04:14,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:04:14,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:04:14,203 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:04:14,218 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:04:14,219 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:04:14,220 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:04:14,220 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:04:14,220 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:04:14,221 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:04:14,221 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:04:14,221 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:04:14,222 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:04:14,222 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:04:14,223 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:04:14,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:04:14,223 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:04:14,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:04:14,224 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:04:14,224 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:04:14,224 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:04:14,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:04:14,225 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:04:14,225 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:04:14,225 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:04:14,226 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:04:14,226 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:04:14,535 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:04:14,548 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:04:14,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:04:14,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:04:14,555 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:04:14,556 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-17 17:04:14,619 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd480a74/d0b770dc2c8440aba211c2c03474df2b/FLAG40dda4240 [2020-07-17 17:04:15,034 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:04:15,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-07-17 17:04:15,043 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd480a74/d0b770dc2c8440aba211c2c03474df2b/FLAG40dda4240 [2020-07-17 17:04:15,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6dd480a74/d0b770dc2c8440aba211c2c03474df2b [2020-07-17 17:04:15,466 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:04:15,470 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:04:15,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:15,473 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:04:15,476 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:04:15,477 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:15" (1/1) ... [2020-07-17 17:04:15,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ea9790b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:15, skipping insertion in model container [2020-07-17 17:04:15,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:04:15" (1/1) ... [2020-07-17 17:04:15,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:04:15,519 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:04:15,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:15,840 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:04:16,004 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:04:16,025 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:04:16,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16 WrapperNode [2020-07-17 17:04:16,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:04:16,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:04:16,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:04:16,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:04:16,040 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,050 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (1/1) ... [2020-07-17 17:04:16,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:04:16,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:04:16,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:04:16,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:04:16,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (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 [2020-07-17 17:04:16,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:04:16,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:04:16,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-07-17 17:04:16,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-17 17:04:16,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:04:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:04:16,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 17:04:16,163 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-07-17 17:04:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:04:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 17:04:16,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:04:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:04:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 17:04:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:04:16,165 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-17 17:04:16,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:04:16,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:04:16,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-17 17:04:16,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:04:16,681 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:04:16,681 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-07-17 17:04:16,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:16 BoogieIcfgContainer [2020-07-17 17:04:16,687 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:04:16,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:04:16,689 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:04:16,692 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:04:16,692 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:04:15" (1/3) ... [2020-07-17 17:04:16,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:16, skipping insertion in model container [2020-07-17 17:04:16,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:04:16" (2/3) ... [2020-07-17 17:04:16,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5806aae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:04:16, skipping insertion in model container [2020-07-17 17:04:16,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:04:16" (3/3) ... [2020-07-17 17:04:16,696 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-07-17 17:04:16,707 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:04:16,714 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:04:16,728 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:04:16,746 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:04:16,746 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:04:16,746 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:04:16,747 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:04:16,747 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:04:16,747 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:04:16,747 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:04:16,747 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:04:16,765 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-07-17 17:04:16,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-17 17:04:16,778 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:16,779 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] [2020-07-17 17:04:16,780 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:16,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:16,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-07-17 17:04:16,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:16,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [518493570] [2020-07-17 17:04:16,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:16,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:17,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:04:17,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:04:17,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [518493570] [2020-07-17 17:04:17,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:04:17,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:04:17,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242642344] [2020-07-17 17:04:17,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:04:17,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:04:17,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:04:17,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:04:17,099 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-07-17 17:04:17,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:04:17,568 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-07-17 17:04:17,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:04:17,570 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-07-17 17:04:17,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:04:17,583 INFO L225 Difference]: With dead ends: 308 [2020-07-17 17:04:17,583 INFO L226 Difference]: Without dead ends: 158 [2020-07-17 17:04:17,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 17:04:17,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-17 17:04:17,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-17 17:04:17,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-17 17:04:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-07-17 17:04:17,649 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-07-17 17:04:17,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:04:17,649 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-07-17 17:04:17,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:04:17,650 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-07-17 17:04:17,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 17:04:17,656 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:04:17,657 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] [2020-07-17 17:04:17,657 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:04:17,658 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:04:17,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:04:17,658 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-07-17 17:04:17,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:04:17,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074230566] [2020-07-17 17:04:17,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:04:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:17,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:04:17,904 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:04:17,905 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:04:17,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:04:17,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:04:17 BoogieIcfgContainer [2020-07-17 17:04:17,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:04:17,996 INFO L168 Benchmark]: Toolchain (without parser) took 2526.47 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 104.5 MB in the beginning and 162.0 MB in the end (delta: -57.5 MB). Peak memory consumption was 37.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:17,998 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 17:04:17,999 INFO L168 Benchmark]: CACSL2BoogieTranslator took 553.33 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 104.1 MB in the beginning and 179.7 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,001 INFO L168 Benchmark]: Boogie Preprocessor took 76.44 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 177.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,002 INFO L168 Benchmark]: RCFGBuilder took 584.59 ms. Allocated memory is still 203.4 MB. Free memory was 177.0 MB in the beginning and 140.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,003 INFO L168 Benchmark]: TraceAbstraction took 1304.32 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 140.0 MB in the beginning and 162.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:04:18,013 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 553.33 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 104.1 MB in the beginning and 179.7 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.44 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 177.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 584.59 ms. Allocated memory is still 203.4 MB. Free memory was 177.0 MB in the beginning and 140.6 MB in the end (delta: 36.4 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1304.32 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 140.0 MB in the beginning and 162.0 MB in the end (delta: -22.0 MB). Peak memory consumption was 8.9 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 bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934601, \old(Zero_fmod)=8589934595, \old(Zero_fmod)=8589934600, one_fmod=1, Zero_fmod={3:0}] [L126] float x = 0.0f; VAL [one_fmod=1, x=0, Zero_fmod={3:0}] [L127] float y = __VERIFIER_nondet_float(); VAL [__VERIFIER_nondet_float()=8589934598, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=8589934598, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=8589934598, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934598, gf_u={5:0}, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L22] gf_u.value = (x) VAL [\old(x)=0, \old(y)=8589934598, gf_u={5:0}, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L23] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934598, gf_u={5:0}, gf_u.word=4294967296, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L23] (hx) = gf_u.word VAL [(hx) = gf_u.word=8589934597, \old(x)=0, \old(y)=8589934598, gf_u={5:0}, gf_u.word=4294967296, hx=0, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L26] ieee_float_shape_type gf_u; VAL [\old(x)=0, \old(y)=8589934598, gf_u={2:0}, hx=0, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L27] gf_u.value = (y) VAL [\old(x)=0, \old(y)=8589934598, gf_u={2:0}, hx=0, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L28] EXPR gf_u.word VAL [\old(x)=0, \old(y)=8589934598, gf_u={2:0}, gf_u.word=8589934592, hx=0, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L28] (hy) = gf_u.word VAL [(hy) = gf_u.word=8589934594, \old(x)=0, \old(y)=8589934598, gf_u={2:0}, gf_u.word=8589934592, hx=0, hy=0, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L30] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=8589934598, hx=0, hy=0, one_fmod=1, sx=-1, x=0, y=8589934598, Zero_fmod={3:0}] [L31] hx ^= sx VAL [\old(x)=0, \old(y)=8589934598, hy=0, one_fmod=1, sx=-1, x=0, y=8589934598, Zero_fmod={3:0}] [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=8589934598, one_fmod=1, sx=-1, x=0, y=8589934598, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) VAL [\old(x)=0, \old(y)=8589934598, hx=2139095040, hy=2139095041, one_fmod=1, sx=-1, x=0, y=8589934598, Zero_fmod={3:0}] [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=8589934598, hx=2139095040, hy=2139095041, one_fmod=1, sx=-1, x=0, y=8589934598, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934603, one_fmod=1, x=0, y=8589934598, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); VAL [fmod_float(x, y)=8589934603, one_fmod=1, res=8589934603, x=0, y=8589934598, Zero_fmod={3:0}] [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=8589934603, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934598, Zero_fmod={3:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) VAL [one_fmod=1, res=8589934603, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=8589934598, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934603, x=0, y=8589934598, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=166occurred 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: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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...