/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_0730a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:36:36,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:36:36,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:36:36,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:36:36,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:36:36,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:36:36,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:36:36,945 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:36:36,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:36:36,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:36:36,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:36:36,951 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:36:36,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:36:36,952 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:36:36,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:36:36,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:36:36,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:36:36,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:36:36,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:36:36,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:36:36,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:36:36,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:36:36,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:36:36,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:36:36,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 21:36:36,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 21:36:36,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 21:36:36,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 21:36:36,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 21:36:36,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 21:36:36,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:36:36,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:36:36,978 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:36:36,979 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:36:36,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:36:36,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:36:36,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:36:36,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:36:36,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:36:36,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:36:36,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:36:36,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:36:37,007 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:36:37,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:36:37,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:36:37,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:36:37,009 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:36:37,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:36:37,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:36:37,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:36:37,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:36:37,010 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:36:37,011 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:36:37,011 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:36:37,011 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:36:37,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:36:37,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:36:37,016 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:36:37,016 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:36:37,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:36:37,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:36:37,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:36:37,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:36:37,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:36:37,019 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 [2020-09-04 21:36:37,484 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:36:37,510 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:36:37,515 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:36:37,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:36:37,517 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:36:37,518 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-09-04 21:36:37,615 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab79bc9b7/93999794b4af48d5aa11f251da5ddfda/FLAGba24d7afd [2020-09-04 21:36:38,152 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:36:38,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-09-04 21:36:38,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab79bc9b7/93999794b4af48d5aa11f251da5ddfda/FLAGba24d7afd [2020-09-04 21:36:38,493 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ab79bc9b7/93999794b4af48d5aa11f251da5ddfda [2020-09-04 21:36:38,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:36:38,508 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:36:38,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:38,510 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:36:38,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:36:38,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:38,520 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49bfa118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38, skipping insertion in model container [2020-09-04 21:36:38,521 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:38,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:36:38,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:36:38,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:38,926 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:36:38,966 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:38,996 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:36:38,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38 WrapperNode [2020-09-04 21:36:38,997 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:38,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:36:38,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:36:38,999 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:36:39,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:39,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:39,112 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:39,112 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:39,126 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:39,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:39,146 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... [2020-09-04 21:36:39,153 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:36:39,154 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:36:39,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:36:39,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:36:39,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 21:36:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:36:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:36:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-09-04 21:36:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-04 21:36:39,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:36:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:36:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-04 21:36:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-09-04 21:36:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:36:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:36:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:36:39,241 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:36:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:36:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:36:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-04 21:36:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:36:39,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:36:39,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:36:39,756 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:36:39,757 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-04 21:36:39,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:39 BoogieIcfgContainer [2020-09-04 21:36:39,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:36:39,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:36:39,766 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:36:39,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:36:39,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:36:38" (1/3) ... [2020-09-04 21:36:39,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2746d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:39, skipping insertion in model container [2020-09-04 21:36:39,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:38" (2/3) ... [2020-09-04 21:36:39,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2746d527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:39, skipping insertion in model container [2020-09-04 21:36:39,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:39" (3/3) ... [2020-09-04 21:36:39,777 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2020-09-04 21:36:39,788 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:36:39,800 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:36:39,820 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:36:39,847 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:36:39,847 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:36:39,847 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:36:39,847 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:36:39,848 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:36:39,848 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:36:39,848 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:36:39,848 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:36:39,871 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-09-04 21:36:39,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-04 21:36:39,887 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:39,889 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] [2020-09-04 21:36:39,889 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:39,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:39,898 INFO L82 PathProgramCache]: Analyzing trace with hash 1347664399, now seen corresponding path program 1 times [2020-09-04 21:36:39,911 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:39,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258755408] [2020-09-04 21:36:39,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:40,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:40,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:36:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:40,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 21:36:40,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-04 21:36:40,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:36:40,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258755408] [2020-09-04 21:36:40,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:36:40,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:36:40,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429726361] [2020-09-04 21:36:40,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:36:40,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:36:40,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:36:40,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:36:40,241 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-09-04 21:36:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:36:40,654 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2020-09-04 21:36:40,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:36:40,659 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-04 21:36:40,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:36:40,673 INFO L225 Difference]: With dead ends: 212 [2020-09-04 21:36:40,673 INFO L226 Difference]: Without dead ends: 110 [2020-09-04 21:36:40,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:36:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-04 21:36:40,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-09-04 21:36:40,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 21:36:40,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2020-09-04 21:36:40,740 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 41 [2020-09-04 21:36:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:36:40,740 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2020-09-04 21:36:40,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:36:40,741 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2020-09-04 21:36:40,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-04 21:36:40,744 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:40,744 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] [2020-09-04 21:36:40,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:36:40,745 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:40,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:40,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1528682335, now seen corresponding path program 1 times [2020-09-04 21:36:40,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:40,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191043377] [2020-09-04 21:36:40,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:40,840 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:40,906 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:40,951 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:36:40,952 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:36:40,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:36:41,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:36:41 BoogieIcfgContainer [2020-09-04 21:36:41,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:36:41,011 INFO L168 Benchmark]: Toolchain (without parser) took 2501.35 ms. Allocated memory was 138.4 MB in the beginning and 232.3 MB in the end (delta: 93.8 MB). Free memory was 101.7 MB in the beginning and 195.6 MB in the end (delta: -93.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:36:41,011 INFO L168 Benchmark]: CDTParser took 0.97 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:36:41,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.57 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 89.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:41,013 INFO L168 Benchmark]: Boogie Preprocessor took 155.03 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 89.6 MB in the beginning and 177.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:41,014 INFO L168 Benchmark]: RCFGBuilder took 610.66 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 149.4 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:41,015 INFO L168 Benchmark]: TraceAbstraction took 1241.63 ms. Allocated memory was 200.3 MB in the beginning and 232.3 MB in the end (delta: 32.0 MB). Free memory was 148.7 MB in the beginning and 195.6 MB in the end (delta: -46.9 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 21:36:41,025 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.97 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 488.57 ms. Allocated memory is still 138.4 MB. Free memory was 101.3 MB in the beginning and 89.6 MB in the end (delta: 11.7 MB). Peak memory consumption was 11.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.03 ms. Allocated memory was 138.4 MB in the beginning and 200.3 MB in the end (delta: 61.9 MB). Free memory was 89.6 MB in the beginning and 177.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 610.66 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 149.4 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1241.63 ms. Allocated memory was 200.3 MB in the beginning and 232.3 MB in the end (delta: 32.0 MB). Free memory was 148.7 MB in the beginning and 195.6 MB in the end (delta: -46.9 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 107]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 27, overapproximation of bitwiseAnd at line 89. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; VAL [\old(one_sqrt)=8589934597, \old(tiny_sqrt)=8589934596, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L101] float x = 1.0f / 0.0f; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L103] CALL, EXPR __ieee754_sqrtf(x) VAL [\old(x)=8589934599, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L15] float z; VAL [\old(x)=8589934599, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L16] __uint32_t r, hx; VAL [\old(x)=8589934599, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L17] __int32_t ix, s, q, m, t, i; VAL [\old(x)=8589934599, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L20] ieee_float_shape_type gf_u; VAL [\old(x)=8589934599, gf_u={3:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L21] gf_u.value = (x) VAL [\old(x)=8589934599, gf_u={3:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L22] EXPR gf_u.word VAL [\old(x)=8589934599, gf_u={3:0}, gf_u.word=8589934590, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L22] (ix) = gf_u.word VAL [\old(x)=8589934599, gf_u={3:0}, gf_u.word=8589934590, ix=-2, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L24] hx = ix & 0x7fffffff VAL [\old(x)=8589934599, ix=-2, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L26] COND TRUE !((hx) < 0x7f800000L) VAL [\old(x)=8589934599, hx=2139095040, ix=-2, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L27] return x * x + x; VAL [\old(x)=8589934599, hx=2139095040, ix=-2, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L103] RET, EXPR __ieee754_sqrtf(x) VAL [__ieee754_sqrtf(x)=8589934591, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L103] float res = __ieee754_sqrtf(x); VAL [__ieee754_sqrtf(x)=8589934591, one_sqrt=1, res=8589934591, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L106] CALL, EXPR isinf_float(res) VAL [\old(x)=8589934591, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000] [L83] __int32_t ix; VAL [\old(x)=8589934591, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934591] [L85] ieee_float_shape_type gf_u; VAL [\old(x)=8589934591, gf_u={2:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934591] [L86] gf_u.value = (x) VAL [\old(x)=8589934591, gf_u={2:0}, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934591] [L87] EXPR gf_u.word VAL [\old(x)=8589934591, gf_u={2:0}, gf_u.word=4294967295, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934591] [L87] (ix) = gf_u.word VAL [(ix) = gf_u.word=8589934598, \old(x)=8589934591, gf_u={2:0}, gf_u.word=4294967295, ix=-1, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934591] [L89] ix &= 0x7fffffff VAL [\old(x)=8589934591, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934591] [L90] return ((ix) == 0x7f800000L); VAL [\old(x)=8589934591, \result=0, ix=0, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000, x=8589934591] [L106] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, one_sqrt=1, res=8589934591, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L106] COND TRUE !isinf_float(res) VAL [isinf_float(res)=0, one_sqrt=1, res=8589934591, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] [L107] __VERIFIER_error() VAL [one_sqrt=1, res=8589934591, tiny_sqrt=1/1000000000000000000000000000000, x=8589934599] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 117 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 27 SDslu, 93 SDs, 0 SdLazy, 127 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=117occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3160 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...