/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/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:01:20,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:01:20,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:01:20,822 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-07 13:01:20,847 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:01:20,849 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:01:20,851 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:01:20,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:01:20,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:01:20,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:01:20,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:01:20,863 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:01:20,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:01:20,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:01:20,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:01:20,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:01:20,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:01:20,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:01:20,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:01:20,889 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:01:20,890 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 13:01:20,918 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:01:20,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:01:20,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:01:20,922 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:01:20,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:01:20,922 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:01:20,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:01:20,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:01:20,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:01:20,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:01:20,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:01:20,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:01:20,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:01:20,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:01:20,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:01:20,925 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:01:20,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:01:20,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:01:20,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:01:20,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:01:20,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:01:20,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:01:20,926 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:01:21,209 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:01:21,221 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:01:21,224 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:01:21,226 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:01:21,226 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:01:21,227 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-07-07 13:01:21,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0847a22/845aec3eb1454b81ac0f978c9eb832dd/FLAGc2621d85a [2020-07-07 13:01:21,730 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:01:21,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-07-07 13:01:21,737 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0847a22/845aec3eb1454b81ac0f978c9eb832dd/FLAGc2621d85a [2020-07-07 13:01:22,130 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c0847a22/845aec3eb1454b81ac0f978c9eb832dd [2020-07-07 13:01:22,141 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:01:22,143 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:01:22,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:22,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:01:22,148 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:01:22,149 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603aea97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22, skipping insertion in model container [2020-07-07 13:01:22,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:01:22,194 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:01:22,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:22,525 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:01:22,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:01:22,712 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:01:22,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22 WrapperNode [2020-07-07 13:01:22,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:01:22,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:01:22,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:01:22,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:01:22,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,727 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,756 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,756 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (1/1) ... [2020-07-07 13:01:22,801 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:01:22,802 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:01:22,802 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:01:22,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:01:22,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (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 13:01:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:01:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:01:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-07 13:01:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-07-07 13:01:22,860 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:01:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:01:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-07 13:01:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-07-07 13:01:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:01:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-07 13:01:22,861 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:01:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:01:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:01:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-07 13:01:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:01:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:01:22,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:01:23,467 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:01:23,468 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-07-07 13:01:23,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:23 BoogieIcfgContainer [2020-07-07 13:01:23,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:01:23,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:01:23,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:01:23,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:01:23,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:01:22" (1/3) ... [2020-07-07 13:01:23,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab297f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:23, skipping insertion in model container [2020-07-07 13:01:23,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:01:22" (2/3) ... [2020-07-07 13:01:23,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab297f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:01:23, skipping insertion in model container [2020-07-07 13:01:23,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:01:23" (3/3) ... [2020-07-07 13:01:23,484 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-07-07 13:01:23,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:01:23,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:01:23,517 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:01:23,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:01:23,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:01:23,540 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:01:23,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:01:23,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:01:23,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:01:23,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:01:23,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:01:23,562 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states. [2020-07-07 13:01:23,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-07 13:01:23,577 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:23,578 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] [2020-07-07 13:01:23,579 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:23,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:23,585 INFO L82 PathProgramCache]: Analyzing trace with hash -1596885088, now seen corresponding path program 1 times [2020-07-07 13:01:23,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:23,595 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [160935907] [2020-07-07 13:01:23,595 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:23,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:23,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:23,846 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 13:01:23,846 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:23,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [160935907] [2020-07-07 13:01:23,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:23,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 13:01:23,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589309275] [2020-07-07 13:01:23,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 13:01:23,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:23,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 13:01:23,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 13:01:23,873 INFO L87 Difference]: Start difference. First operand 186 states. Second operand 4 states. [2020-07-07 13:01:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:24,340 INFO L93 Difference]: Finished difference Result 352 states and 406 transitions. [2020-07-07 13:01:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 13:01:24,342 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-07 13:01:24,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:24,354 INFO L225 Difference]: With dead ends: 352 [2020-07-07 13:01:24,355 INFO L226 Difference]: Without dead ends: 172 [2020-07-07 13:01:24,360 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 [2020-07-07 13:01:24,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-07-07 13:01:24,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-07-07 13:01:24,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-07-07 13:01:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 178 transitions. [2020-07-07 13:01:24,417 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 178 transitions. Word has length 42 [2020-07-07 13:01:24,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:24,418 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 178 transitions. [2020-07-07 13:01:24,418 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 13:01:24,418 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 178 transitions. [2020-07-07 13:01:24,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-07 13:01:24,423 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:24,423 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] [2020-07-07 13:01:24,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:01:24,424 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:24,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:24,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1781987569, now seen corresponding path program 1 times [2020-07-07 13:01:24,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:24,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883741005] [2020-07-07 13:01:24,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:24,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:01:24,612 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 13:01:24,612 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:24,613 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883741005] [2020-07-07 13:01:24,613 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:01:24,613 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:01:24,613 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057761253] [2020-07-07 13:01:24,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:01:24,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:01:24,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:01:24,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:01:24,615 INFO L87 Difference]: Start difference. First operand 172 states and 178 transitions. Second operand 5 states. [2020-07-07 13:01:24,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:01:24,980 INFO L93 Difference]: Finished difference Result 179 states and 184 transitions. [2020-07-07 13:01:24,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:01:24,981 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2020-07-07 13:01:24,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:01:24,984 INFO L225 Difference]: With dead ends: 179 [2020-07-07 13:01:24,985 INFO L226 Difference]: Without dead ends: 172 [2020-07-07 13:01:24,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:01:24,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-07-07 13:01:25,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-07-07 13:01:25,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-07-07 13:01:25,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 177 transitions. [2020-07-07 13:01:25,024 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 177 transitions. Word has length 64 [2020-07-07 13:01:25,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:01:25,027 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 177 transitions. [2020-07-07 13:01:25,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:01:25,027 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 177 transitions. [2020-07-07 13:01:25,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-07-07 13:01:25,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:01:25,039 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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 13:01:25,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:01:25,040 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:01:25,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:01:25,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1985524025, now seen corresponding path program 1 times [2020-07-07 13:01:25,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:01:25,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369898458] [2020-07-07 13:01:25,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:01:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:01:25,335 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:01:25,335 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:01:25,335 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:01:25,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:01:25,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:01:25 BoogieIcfgContainer [2020-07-07 13:01:25,357 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:01:25,360 INFO L168 Benchmark]: Toolchain (without parser) took 3216.45 ms. Allocated memory was 138.4 MB in the beginning and 235.9 MB in the end (delta: 97.5 MB). Free memory was 103.2 MB in the beginning and 84.4 MB in the end (delta: 18.8 MB). Peak memory consumption was 116.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:25,361 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:01:25,362 INFO L168 Benchmark]: CACSL2BoogieTranslator took 568.63 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 103.0 MB in the beginning and 181.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:25,363 INFO L168 Benchmark]: Boogie Preprocessor took 88.67 ms. Allocated memory is still 205.0 MB. Free memory was 181.9 MB in the beginning and 179.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:25,364 INFO L168 Benchmark]: RCFGBuilder took 672.17 ms. Allocated memory is still 205.0 MB. Free memory was 179.0 MB in the beginning and 136.4 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:25,365 INFO L168 Benchmark]: TraceAbstraction took 1881.53 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 136.4 MB in the beginning and 84.4 MB in the end (delta: 52.0 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:01:25,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 568.63 ms. Allocated memory was 138.4 MB in the beginning and 205.0 MB in the end (delta: 66.6 MB). Free memory was 103.0 MB in the beginning and 181.9 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 88.67 ms. Allocated memory is still 205.0 MB. Free memory was 181.9 MB in the beginning and 179.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 672.17 ms. Allocated memory is still 205.0 MB. Free memory was 179.0 MB in the beginning and 136.4 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1881.53 ms. Allocated memory was 205.0 MB in the beginning and 235.9 MB in the end (delta: 30.9 MB). Free memory was 136.4 MB in the beginning and 84.4 MB in the end (delta: 52.0 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 186 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 361 SDtfs, 42 SDslu, 354 SDs, 0 SdLazy, 501 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=186occurred 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, 2 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...