/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_1010.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:03:48,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:03:48,113 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:03:48,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:03:48,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:03:48,134 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:03:48,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:03:48,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:03:48,149 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:03:48,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:03:48,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:03:48,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:03:48,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:03:48,157 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:03:48,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:03:48,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:03:48,162 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:03:48,163 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:03:48,164 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:03:48,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:03:48,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:03:48,177 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:03:48,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:03:48,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:03:48,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:03:48,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:03:48,181 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:03:48,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:03:48,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:03:48,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:03:48,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:03:48,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:03:48,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:03:48,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:03:48,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:03:48,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:03:48,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:03:48,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:03:48,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:03:48,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:03:48,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:03:48,193 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 17:03:48,208 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:03:48,208 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:03:48,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:03:48,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:03:48,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:03:48,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:03:48,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:03:48,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:03:48,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:03:48,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:03:48,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:03:48,214 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:03:48,214 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:03:48,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:03:48,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:03:48,215 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:03:48,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:03:48,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:03:48,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:03:48,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:03:48,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:03:48,218 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:03:48,218 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 17:03:48,488 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:03:48,501 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:03:48,504 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:03:48,506 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:03:48,506 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:03:48,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2020-07-17 17:03:48,569 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b109954/79cc5b1d724a454198a9ee9e907a12fe/FLAG30a446e8c [2020-07-17 17:03:49,009 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:03:49,009 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2020-07-17 17:03:49,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b109954/79cc5b1d724a454198a9ee9e907a12fe/FLAG30a446e8c [2020-07-17 17:03:49,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0b109954/79cc5b1d724a454198a9ee9e907a12fe [2020-07-17 17:03:49,415 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:03:49,418 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:03:49,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:03:49,419 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:03:49,423 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:03:49,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,427 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4de40543 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49, skipping insertion in model container [2020-07-17 17:03:49,427 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:03:49,451 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:03:49,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:03:49,623 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:03:49,641 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:03:49,661 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:03:49,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49 WrapperNode [2020-07-17 17:03:49,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:03:49,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:03:49,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:03:49,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:03:49,765 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,782 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,782 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... [2020-07-17 17:03:49,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:03:49,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:03:49,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:03:49,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:03:49,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:03:49,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:03:49,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:03:49,879 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-07-17 17:03:49,879 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-07-17 17:03:49,879 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 17:03:49,879 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-07-17 17:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-07-17 17:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 17:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:03:49,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 17:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:03:49,881 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:03:50,230 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:03:50,230 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 17:03:50,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:03:50 BoogieIcfgContainer [2020-07-17 17:03:50,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:03:50,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:03:50,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:03:50,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:03:50,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:03:49" (1/3) ... [2020-07-17 17:03:50,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7d6d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:03:50, skipping insertion in model container [2020-07-17 17:03:50,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:49" (2/3) ... [2020-07-17 17:03:50,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a7d6d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:03:50, skipping insertion in model container [2020-07-17 17:03:50,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:03:50" (3/3) ... [2020-07-17 17:03:50,243 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2020-07-17 17:03:50,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:03:50,260 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:03:50,272 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:03:50,290 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:03:50,290 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:03:50,290 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:03:50,291 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:03:50,291 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:03:50,291 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:03:50,291 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:03:50,291 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:03:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-07-17 17:03:50,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 17:03:50,313 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:03:50,314 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] [2020-07-17 17:03:50,315 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:03:50,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:03:50,321 INFO L82 PathProgramCache]: Analyzing trace with hash -618451774, now seen corresponding path program 1 times [2020-07-17 17:03:50,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:03:50,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90313478] [2020-07-17 17:03:50,329 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:03:50,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:50,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:50,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:50,523 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 17:03:50,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90313478] [2020-07-17 17:03:50,526 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:03:50,527 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:03:50,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193773352] [2020-07-17 17:03:50,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:03:50,533 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:03:50,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:03:50,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:03:50,547 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 4 states. [2020-07-17 17:03:50,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:03:50,731 INFO L93 Difference]: Finished difference Result 94 states and 102 transitions. [2020-07-17 17:03:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:03:50,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-07-17 17:03:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:03:50,744 INFO L225 Difference]: With dead ends: 94 [2020-07-17 17:03:50,744 INFO L226 Difference]: Without dead ends: 46 [2020-07-17 17:03:50,748 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 17:03:50,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-17 17:03:50,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-17 17:03:50,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-17 17:03:50,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 45 transitions. [2020-07-17 17:03:50,805 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 45 transitions. Word has length 27 [2020-07-17 17:03:50,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:03:50,806 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 45 transitions. [2020-07-17 17:03:50,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:03:50,807 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 45 transitions. [2020-07-17 17:03:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-07-17 17:03:50,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:03:50,809 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] [2020-07-17 17:03:50,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:03:50,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:03:50,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:03:50,810 INFO L82 PathProgramCache]: Analyzing trace with hash -2001690657, now seen corresponding path program 1 times [2020-07-17 17:03:50,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:03:50,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459819694] [2020-07-17 17:03:50,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:03:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:03:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:03:50,931 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:03:50,931 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:03:50,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:03:50,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:03:50 BoogieIcfgContainer [2020-07-17 17:03:50,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:03:50,987 INFO L168 Benchmark]: Toolchain (without parser) took 1570.09 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 102.9 MB in the beginning and 116.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 48.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:50,988 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 17:03:50,989 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.23 ms. Allocated memory is still 140.5 MB. Free memory was 102.5 MB in the beginning and 91.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:50,990 INFO L168 Benchmark]: Boogie Preprocessor took 148.12 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:50,991 INFO L168 Benchmark]: RCFGBuilder took 423.89 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 161.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:50,992 INFO L168 Benchmark]: TraceAbstraction took 748.72 ms. Allocated memory is still 202.9 MB. Free memory was 161.9 MB in the beginning and 116.7 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:50,996 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 243.23 ms. Allocated memory is still 140.5 MB. Free memory was 102.5 MB in the beginning and 91.9 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 148.12 ms. Allocated memory was 140.5 MB in the beginning and 202.9 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.89 ms. Allocated memory is still 202.9 MB. Free memory was 180.4 MB in the beginning and 161.9 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 748.72 ms. Allocated memory is still 202.9 MB. Free memory was 161.9 MB in the beginning and 116.7 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 40]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 12, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseAnd at line 23. Possible FailurePath: [L35] float x = 0.0f / 0.0f; [L36] CALL, EXPR fabs_float(x) VAL [\old(x)=14] [L15] __uint32_t ix; VAL [\old(x)=14, x=14] [L17] ieee_float_shape_type gf_u; VAL [\old(x)=14, gf_u={3:0}, x=14] [L18] gf_u.value = (x) VAL [\old(x)=14, gf_u={3:0}, x=14] [L19] EXPR gf_u.word VAL [\old(x)=14, gf_u={3:0}, gf_u.word=12, x=14] [L19] (ix) = gf_u.word VAL [\old(x)=14, gf_u={3:0}, gf_u.word=12, ix=12, x=14] [L22] ieee_float_shape_type sf_u; VAL [\old(x)=14, ix=12, sf_u={2:0}, x=14] [L23] sf_u.word = (ix & 0x7fffffff) VAL [\old(x)=14, ix=12, sf_u={2:0}, x=14] [L24] EXPR sf_u.value VAL [\old(x)=14, ix=12, sf_u={2:0}, sf_u.value=10, x=14] [L24] (x) = sf_u.value VAL [(x) = sf_u.value=11, \old(x)=14, ix=12, sf_u={2:0}, sf_u.value=10, x=10] [L26] return x; VAL [\old(x)=14, \result=10, ix=12, x=10] [L36] RET, EXPR fabs_float(x) VAL [fabs_float(x)=10, x=14] [L36] float res = fabs_float(x); VAL [fabs_float(x)=10, res=10, x=14] [L39] CALL, EXPR isnan_float(res) VAL [\old(x)=10] [L12] return x != x; VAL [\old(x)=10, \result=0, x=10] [L39] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=10, x=14] [L39] COND TRUE !isnan_float(res) VAL [isnan_float(res)=0, res=10, x=14] [L40] __VERIFIER_error() VAL [res=10, x=14] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 53 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 13 SDslu, 30 SDs, 0 SdLazy, 53 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s 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 DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 1222 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...