/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:32:18,901 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:32:18,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:32:18,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 18:32:18,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 18:32:18,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 18:32:18,959 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 18:32:18,962 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 18:32:18,963 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 18:32:18,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 18:32:18,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 18:32:18,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 18:32:18,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:32:18,972 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:32:18,975 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:32:18,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:32:18,978 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:32:18,980 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:32:18,981 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:32:18,989 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:32:18,992 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:32:18,993 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:32:18,995 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:32:18,995 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:32:19,000 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:32:19,009 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 18:32:19,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 18:32:19,011 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 18:32:19,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 18:32:19,026 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:32:19,026 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:32:19,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:32:19,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:32:19,029 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:32:19,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:32:19,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:32:19,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:32:19,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:32:19,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:32:19,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:32:19,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:32:19,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:32:19,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:32:19,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:32:19,032 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:32:19,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:32:19,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:32:19,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:32:19,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:32:19,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:32:19,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:32:19,033 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:32:19,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:32:19,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:32:19,332 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:32:19,334 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:32:19,334 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:32:19,335 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2020-08-22 18:32:19,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c999e357d/98f697e9c2974b53b0c74349edfc6923/FLAG67bb18dcc [2020-08-22 18:32:19,835 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:32:19,836 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1052d.c [2020-08-22 18:32:19,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c999e357d/98f697e9c2974b53b0c74349edfc6923/FLAG67bb18dcc [2020-08-22 18:32:20,243 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c999e357d/98f697e9c2974b53b0c74349edfc6923 [2020-08-22 18:32:20,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:32:20,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:32:20,254 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:20,254 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:32:20,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:32:20,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e9d6c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20, skipping insertion in model container [2020-08-22 18:32:20,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:32:20,298 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:32:20,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:20,550 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:32:20,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:20,607 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:32:20,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20 WrapperNode [2020-08-22 18:32:20,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:20,608 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:32:20,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:32:20,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:32:20,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,739 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,762 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,762 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (1/1) ... [2020-08-22 18:32:20,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:32:20,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:32:20,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:32:20,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:32:20,812 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (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 [2020-08-22 18:32:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:32:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:32:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-08-22 18:32:20,885 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 18:32:20,886 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:32:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:32:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-08-22 18:32:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:32:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:32:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:32:20,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:32:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:32:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:32:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 18:32:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:32:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:32:20,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:32:21,297 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:32:21,298 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 18:32:21,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:21 BoogieIcfgContainer [2020-08-22 18:32:21,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:32:21,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:32:21,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:32:21,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:32:21,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:32:20" (1/3) ... [2020-08-22 18:32:21,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1214f71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:21, skipping insertion in model container [2020-08-22 18:32:21,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:20" (2/3) ... [2020-08-22 18:32:21,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1214f71b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:21, skipping insertion in model container [2020-08-22 18:32:21,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:21" (3/3) ... [2020-08-22 18:32:21,310 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052d.c [2020-08-22 18:32:21,320 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:32:21,327 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:32:21,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:32:21,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:32:21,357 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:32:21,358 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:32:21,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:32:21,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:32:21,359 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:32:21,359 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:32:21,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:32:21,375 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-08-22 18:32:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 18:32:21,387 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:21,388 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] [2020-08-22 18:32:21,389 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:21,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:21,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1112958377, now seen corresponding path program 1 times [2020-08-22 18:32:21,404 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:21,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728946156] [2020-08-22 18:32:21,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:21,479 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:21,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:21,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:32:21,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:21,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 18:32:21,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:21,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 18:32:21,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728946156] [2020-08-22 18:32:21,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:32:21,694 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:32:21,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673621012] [2020-08-22 18:32:21,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:32:21,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:32:21,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:32:21,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:32:21,717 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 4 states. [2020-08-22 18:32:22,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:32:22,022 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2020-08-22 18:32:22,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:32:22,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-08-22 18:32:22,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:32:22,036 INFO L225 Difference]: With dead ends: 168 [2020-08-22 18:32:22,037 INFO L226 Difference]: Without dead ends: 84 [2020-08-22 18:32:22,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 18:32:22,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-08-22 18:32:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-08-22 18:32:22,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-22 18:32:22,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-08-22 18:32:22,096 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 31 [2020-08-22 18:32:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:32:22,096 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-08-22 18:32:22,096 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:32:22,097 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-08-22 18:32:22,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 18:32:22,099 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:22,099 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] [2020-08-22 18:32:22,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:32:22,100 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:22,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:22,100 INFO L82 PathProgramCache]: Analyzing trace with hash 788175425, now seen corresponding path program 1 times [2020-08-22 18:32:22,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:22,101 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [15199019] [2020-08-22 18:32:22,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:22,104 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:22,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:22,183 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:22,219 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:22,251 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:32:22,251 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:32:22,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:32:22,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:32:22 BoogieIcfgContainer [2020-08-22 18:32:22,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:32:22,275 INFO L168 Benchmark]: Toolchain (without parser) took 2021.49 ms. Allocated memory was 147.8 MB in the beginning and 206.6 MB in the end (delta: 58.7 MB). Free memory was 104.0 MB in the beginning and 100.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 62.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:22,276 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:32:22,277 INFO L168 Benchmark]: CACSL2BoogieTranslator took 354.34 ms. Allocated memory is still 147.8 MB. Free memory was 103.8 MB in the beginning and 92.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:22,279 INFO L168 Benchmark]: Boogie Preprocessor took 201.78 ms. Allocated memory was 147.8 MB in the beginning and 206.6 MB in the end (delta: 58.7 MB). Free memory was 92.6 MB in the beginning and 183.8 MB in the end (delta: -91.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:22,280 INFO L168 Benchmark]: RCFGBuilder took 492.13 ms. Allocated memory is still 206.6 MB. Free memory was 183.8 MB in the beginning and 158.9 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:22,281 INFO L168 Benchmark]: TraceAbstraction took 968.11 ms. Allocated memory is still 206.6 MB. Free memory was 158.3 MB in the beginning and 100.0 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:22,285 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 147.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 354.34 ms. Allocated memory is still 147.8 MB. Free memory was 103.8 MB in the beginning and 92.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 201.78 ms. Allocated memory was 147.8 MB in the beginning and 206.6 MB in the end (delta: 58.7 MB). Free memory was 92.6 MB in the beginning and 183.8 MB in the end (delta: -91.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 492.13 ms. Allocated memory is still 206.6 MB. Free memory was 183.8 MB in the beginning and 158.9 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 968.11 ms. Allocated memory is still 206.6 MB. Free memory was 158.3 MB in the beginning and 100.0 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; [L75] float x = 0.0f; [L76] CALL, EXPR floor_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L76] RET, EXPR floor_float(x) [L76] float res = floor_float(x); [L79] EXPR res == 0.0f && __signbit_float(res) == 0 [L79] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 17 SDslu, 73 SDs, 0 SdLazy, 105 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...