/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 0.1.25-72570d3 [2020-08-22 21:50:05,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:50:05,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:50:05,958 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 21:50:05,967 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:50:05,968 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:50:05,969 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:50:05,970 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:50:05,971 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:50:05,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:50:05,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:50:05,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:50:05,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:50:05,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:50:05,983 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:50:05,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:50:05,986 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:50:05,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:50:05,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:50:05,994 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:50:05,995 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 21:50:06,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:50:06,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:50:06,006 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:50:06,006 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:50:06,006 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:50:06,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:50:06,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:50:06,007 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:50:06,007 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:50:06,007 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:50:06,007 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:50:06,008 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:50:06,008 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:50:06,008 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:50:06,008 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:50:06,008 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:50:06,009 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:50:06,009 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:50:06,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:50:06,009 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:50:06,009 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:50:06,010 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:50:06,010 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 [2020-08-22 21:50:06,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:50:06,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:50:06,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:50:06,325 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:50:06,326 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:50:06,327 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-08-22 21:50:06,396 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556768e72/e804d1a58c0f4057af4f01279906f3e0/FLAG91c5d7b3a [2020-08-22 21:50:06,883 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:50:06,884 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730a.c [2020-08-22 21:50:06,897 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556768e72/e804d1a58c0f4057af4f01279906f3e0/FLAG91c5d7b3a [2020-08-22 21:50:07,226 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/556768e72/e804d1a58c0f4057af4f01279906f3e0 [2020-08-22 21:50:07,236 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:50:07,238 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:50:07,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:07,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:50:07,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:50:07,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb9461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07, skipping insertion in model container [2020-08-22 21:50:07,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:50:07,275 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:50:07,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:07,466 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:50:07,500 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:07,612 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:50:07,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07 WrapperNode [2020-08-22 21:50:07,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:07,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:50:07,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:50:07,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:50:07,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,647 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (1/1) ... [2020-08-22 21:50:07,661 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:50:07,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:50:07,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:50:07,662 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:50:07,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (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 21:50:07,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:50:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:50:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-08-22 21:50:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-22 21:50:07,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:50:07,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:50:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 21:50:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-08-22 21:50:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:50:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:50:07,728 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:50:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:50:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:50:07,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:50:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-22 21:50:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:50:07,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:50:07,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:50:08,153 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:50:08,153 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 21:50:08,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:08 BoogieIcfgContainer [2020-08-22 21:50:08,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:50:08,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:50:08,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:50:08,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:50:08,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:50:07" (1/3) ... [2020-08-22 21:50:08,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c735b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:08, skipping insertion in model container [2020-08-22 21:50:08,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:07" (2/3) ... [2020-08-22 21:50:08,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c735b66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:08, skipping insertion in model container [2020-08-22 21:50:08,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:08" (3/3) ... [2020-08-22 21:50:08,167 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730a.c [2020-08-22 21:50:08,178 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:50:08,185 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:50:08,199 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:50:08,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:50:08,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:50:08,221 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:50:08,221 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:50:08,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:50:08,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:50:08,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:50:08,222 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:50:08,241 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states. [2020-08-22 21:50:08,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 21:50:08,256 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:08,257 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] [2020-08-22 21:50:08,258 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:08,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1347664399, now seen corresponding path program 1 times [2020-08-22 21:50:08,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:08,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1729450839] [2020-08-22 21:50:08,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:08,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:08,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:50:08,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:08,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 21:50:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:08,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-22 21:50:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:08,542 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 21:50:08,543 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1729450839] [2020-08-22 21:50:08,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:50:08,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:50:08,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876080271] [2020-08-22 21:50:08,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:50:08,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:50:08,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:50:08,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:50:08,571 INFO L87 Difference]: Start difference. First operand 117 states. Second operand 4 states. [2020-08-22 21:50:08,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:50:08,916 INFO L93 Difference]: Finished difference Result 212 states and 251 transitions. [2020-08-22 21:50:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:50:08,918 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-08-22 21:50:08,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:50:08,930 INFO L225 Difference]: With dead ends: 212 [2020-08-22 21:50:08,930 INFO L226 Difference]: Without dead ends: 110 [2020-08-22 21:50:08,935 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 [2020-08-22 21:50:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-08-22 21:50:08,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-08-22 21:50:08,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 21:50:08,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 120 transitions. [2020-08-22 21:50:08,991 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 120 transitions. Word has length 41 [2020-08-22 21:50:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:50:08,992 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 120 transitions. [2020-08-22 21:50:08,992 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:50:08,992 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 120 transitions. [2020-08-22 21:50:08,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-08-22 21:50:08,995 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:08,995 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] [2020-08-22 21:50:08,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:50:08,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:08,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:08,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1528682335, now seen corresponding path program 1 times [2020-08-22 21:50:08,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:08,998 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218761182] [2020-08-22 21:50:08,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:09,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:09,099 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:09,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:09,145 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:09,193 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:50:09,194 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:50:09,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:50:09,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:50:09 BoogieIcfgContainer [2020-08-22 21:50:09,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:50:09,264 INFO L168 Benchmark]: Toolchain (without parser) took 2025.66 ms. Allocated memory was 137.9 MB in the beginning and 231.7 MB in the end (delta: 93.8 MB). Free memory was 102.7 MB in the beginning and 194.8 MB in the end (delta: -92.1 MB). Peak memory consumption was 1.8 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:09,265 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 21:50:09,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.09 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 178.6 MB in the end (delta: -76.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:09,267 INFO L168 Benchmark]: Boogie Preprocessor took 47.53 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 176.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:09,274 INFO L168 Benchmark]: RCFGBuilder took 497.97 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 148.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:09,275 INFO L168 Benchmark]: TraceAbstraction took 1101.11 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 148.2 MB in the beginning and 194.8 MB in the end (delta: -46.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 21:50:09,286 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 137.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 374.09 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 102.3 MB in the beginning and 178.6 MB in the end (delta: -76.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 47.53 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 176.5 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 497.97 ms. Allocated memory is still 200.8 MB. Free memory was 176.5 MB in the beginning and 148.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1101.11 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 148.2 MB in the beginning and 194.8 MB in the end (delta: -46.6 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 [(ix) = gf_u.word=8589934595, \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 [\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: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s 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...