/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_1092c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:50:32,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:50:32,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:50:32,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 21:50:32,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 21:50:32,937 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 21:50:32,940 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 21:50:32,944 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 21:50:32,946 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 21:50:32,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 21:50:32,949 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 21:50:32,950 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 21:50:32,951 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:50:32,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:50:32,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:50:32,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:50:32,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:50:32,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:50:32,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:50:32,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:50:32,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:50:32,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:50:32,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:50:32,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:50:32,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:50:32,993 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:50:32,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:50:32,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:50:32,996 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 21:50:33,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:50:33,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:50:33,007 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:50:33,007 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:50:33,007 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:50:33,007 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:50:33,007 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:50:33,008 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:50:33,008 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:50:33,008 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:50:33,008 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:50:33,009 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:50:33,009 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:50:33,009 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:50:33,009 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:50:33,009 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:50:33,010 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:50:33,010 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:50:33,010 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:50:33,010 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:50:33,010 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:50:33,011 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:50:33,011 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 21:50:33,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:50:33,333 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:50:33,336 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:50:33,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:50:33,338 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:50:33,339 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-08-22 21:50:33,418 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e16554da/4d2bb9cb6c7046c080e86e1cf1cf9d4f/FLAG6f556d7cf [2020-08-22 21:50:33,903 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:50:33,903 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-08-22 21:50:33,910 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e16554da/4d2bb9cb6c7046c080e86e1cf1cf9d4f/FLAG6f556d7cf [2020-08-22 21:50:34,324 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e16554da/4d2bb9cb6c7046c080e86e1cf1cf9d4f [2020-08-22 21:50:34,334 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:50:34,336 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:50:34,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:34,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:50:34,341 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:50:34,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,344 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30914678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34, skipping insertion in model container [2020-08-22 21:50:34,345 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:50:34,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:50:34,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:34,577 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:50:34,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:34,716 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:50:34,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34 WrapperNode [2020-08-22 21:50:34,717 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:34,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:50:34,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:50:34,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:50:34,732 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,732 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,751 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,752 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,787 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (1/1) ... [2020-08-22 21:50:34,799 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:50:34,800 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:50:34,800 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:50:34,800 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:50:34,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (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 21:50:34,871 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:50:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:50:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-08-22 21:50:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-22 21:50:34,872 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:50:34,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:50:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-08-22 21:50:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:50:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:50:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:50:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:50:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:50:34,873 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:50:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-22 21:50:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:50:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:50:34,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:50:35,275 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:50:35,275 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 21:50:35,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:35 BoogieIcfgContainer [2020-08-22 21:50:35,280 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:50:35,282 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:50:35,282 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:50:35,285 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:50:35,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:50:34" (1/3) ... [2020-08-22 21:50:35,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dc9b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:35, skipping insertion in model container [2020-08-22 21:50:35,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:34" (2/3) ... [2020-08-22 21:50:35,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73dc9b97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:35, skipping insertion in model container [2020-08-22 21:50:35,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:35" (3/3) ... [2020-08-22 21:50:35,289 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092c.c [2020-08-22 21:50:35,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:50:35,306 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:50:35,320 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:50:35,342 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:50:35,342 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:50:35,342 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:50:35,342 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:50:35,343 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:50:35,343 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:50:35,343 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:50:35,343 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:50:35,359 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-08-22 21:50:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 21:50:35,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:35,371 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] [2020-08-22 21:50:35,371 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:35,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:35,377 INFO L82 PathProgramCache]: Analyzing trace with hash -111453840, now seen corresponding path program 1 times [2020-08-22 21:50:35,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:35,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117015107] [2020-08-22 21:50:35,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:35,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:50:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:35,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 21:50:35,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:35,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 21:50:35,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:35,626 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 21:50:35,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117015107] [2020-08-22 21:50:35,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:50:35,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:50:35,631 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434016253] [2020-08-22 21:50:35,636 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:50:35,636 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:50:35,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:50:35,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:50:35,653 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-08-22 21:50:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:50:35,917 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2020-08-22 21:50:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:50:35,919 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-08-22 21:50:35,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:50:35,930 INFO L225 Difference]: With dead ends: 160 [2020-08-22 21:50:35,930 INFO L226 Difference]: Without dead ends: 81 [2020-08-22 21:50:35,934 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 21:50:35,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-22 21:50:35,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-22 21:50:35,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 21:50:35,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-08-22 21:50:35,986 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 37 [2020-08-22 21:50:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:50:35,987 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-08-22 21:50:35,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:50:35,987 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-08-22 21:50:35,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 21:50:35,990 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:35,990 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] [2020-08-22 21:50:35,991 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:50:35,991 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:35,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:35,992 INFO L82 PathProgramCache]: Analyzing trace with hash 1808692589, now seen corresponding path program 1 times [2020-08-22 21:50:35,992 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:35,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378705466] [2020-08-22 21:50:35,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:36,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:36,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:36,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:36,237 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:50:36,238 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:50:36,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:50:36,302 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:50:36 BoogieIcfgContainer [2020-08-22 21:50:36,303 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:50:36,308 INFO L168 Benchmark]: Toolchain (without parser) took 1969.13 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 100.0 MB in the beginning and 90.8 MB in the end (delta: 9.1 MB). Peak memory consumption was 72.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:36,309 INFO L168 Benchmark]: CDTParser took 0.85 ms. Allocated memory is still 137.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 21:50:36,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.69 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 179.1 MB in the end (delta: -79.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:36,312 INFO L168 Benchmark]: Boogie Preprocessor took 81.61 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 176.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:36,313 INFO L168 Benchmark]: RCFGBuilder took 480.48 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 152.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:36,315 INFO L168 Benchmark]: TraceAbstraction took 1021.09 ms. Allocated memory is still 200.8 MB. Free memory was 152.7 MB in the beginning and 90.8 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:36,324 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.85 ms. Allocated memory is still 137.4 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 380.69 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 99.8 MB in the beginning and 179.1 MB in the end (delta: -79.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 81.61 ms. Allocated memory is still 200.8 MB. Free memory was 179.1 MB in the beginning and 176.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.48 ms. Allocated memory is still 200.8 MB. Free memory was 176.7 MB in the beginning and 152.7 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1021.09 ms. Allocated memory is still 200.8 MB. Free memory was 152.7 MB in the beginning and 90.8 MB in the end (delta: 61.9 MB). Peak memory consumption was 61.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=1000000000000000000000000000006, huge_ceil=1000000000000000000000000000000] [L76] float x = 1.0f / 0.0f; VAL [huge_ceil=1000000000000000000000000000000] [L77] CALL, EXPR ceil_float(x) VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000] [L14] __int32_t i0, j0; VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L15] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L17] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000007, gf_u={3:0}, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L18] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000007, gf_u={3:0}, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L19] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000007, gf_u={3:0}, gf_u.word=0, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L19] (i0) = gf_u.word VAL [\old(x)=1000000000000000000000000000007, gf_u={3:0}, gf_u.word=0, huge_ceil=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000007] [L21] ix = (i0 & 0x7fffffff) VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i0=0, x=1000000000000000000000000000007] [L22] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000007] [L23] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000007] [L43] COND TRUE !((ix) < 0x7f800000L) VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000007] [L44] return x + x; VAL [\old(x)=1000000000000000000000000000007, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=0, j0=384, x=1000000000000000000000000000007] [L77] RET, EXPR ceil_float(x) VAL [ceil_float(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000007] [L77] float res = ceil_float(x); VAL [ceil_float(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000007] [L80] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000] [L58] __int32_t ix; VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000004] [L60] ieee_float_shape_type gf_u; VAL [\old(x)=1000000000000000000000000000004, gf_u={2:0}, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000004] [L61] gf_u.value = (x) VAL [\old(x)=1000000000000000000000000000004, gf_u={2:0}, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000004] [L62] EXPR gf_u.word VAL [\old(x)=1000000000000000000000000000004, gf_u={2:0}, gf_u.word=0, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000004] [L62] (ix) = gf_u.word VAL [(ix) = gf_u.word=1000000000000000000000000000003, \old(x)=1000000000000000000000000000004, gf_u={2:0}, gf_u.word=0, huge_ceil=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000004] [L64] ix &= 0x7fffffff VAL [\old(x)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000004] [L65] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000004, \result=0, huge_ceil=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000004] [L80] RET, EXPR isinf_float(res) VAL [huge_ceil=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000007] [L80] COND TRUE !isinf_float(res) VAL [huge_ceil=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000007] [L81] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000007] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 17 SDslu, 68 SDs, 0 SdLazy, 100 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=88occurred 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, 92 NumberOfCodeBlocks, 92 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 2592 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...