/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:11:09,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:11:09,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:11:09,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:11:09,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:11:09,939 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:11:09,942 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:11:09,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:11:09,949 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:11:09,951 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:11:09,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:11:09,956 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:11:09,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:11:09,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:11:09,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:11:09,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:11:09,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:11:09,965 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:11:09,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:11:09,974 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:11:09,976 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:11:09,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:11:09,979 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:11:09,979 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:11:09,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:11:09,996 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:11:09,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:11:09,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:11:10,000 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 16:11:10,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:11:10,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:11:10,023 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:11:10,023 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:11:10,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:11:10,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:11:10,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:11:10,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:11:10,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:11:10,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:11:10,025 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:11:10,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:11:10,026 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:11:10,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:11:10,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:11:10,027 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:11:10,027 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:11:10,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:11:10,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:10,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:11:10,028 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:11:10,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:11:10,028 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:11:10,462 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:11:10,479 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:11:10,483 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:11:10,485 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:11:10,486 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:11:10,487 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-09-04 16:11:10,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef3065f3/f40a89184f8747179a9168f10d29b467/FLAGe2db42be6 [2020-09-04 16:11:11,079 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:11:11,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1012b.c [2020-09-04 16:11:11,088 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef3065f3/f40a89184f8747179a9168f10d29b467/FLAGe2db42be6 [2020-09-04 16:11:11,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7ef3065f3/f40a89184f8747179a9168f10d29b467 [2020-09-04 16:11:11,461 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:11:11,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:11:11,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:11,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:11:11,472 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:11:11,473 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,478 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52da0f86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11, skipping insertion in model container [2020-09-04 16:11:11,478 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:11:11,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:11:11,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:11,734 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:11:11,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:11,784 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:11:11,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11 WrapperNode [2020-09-04 16:11:11,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:11,785 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:11:11,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:11:11,786 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:11:11,889 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,889 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,921 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (1/1) ... [2020-09-04 16:11:11,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:11:11,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:11:11,929 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:11:11,929 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:11:11,930 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (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 16:11:12,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:11:12,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:11:12,007 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-09-04 16:11:12,008 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-04 16:11:12,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:11:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:11:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-09-04 16:11:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:11:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:11:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:11:12,015 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:11:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:11:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:11:12,016 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-04 16:11:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:11:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:11:12,017 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:11:12,394 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:11:12,394 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 16:11:12,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:12 BoogieIcfgContainer [2020-09-04 16:11:12,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:11:12,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:11:12,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:11:12,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:11:12,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:11:11" (1/3) ... [2020-09-04 16:11:12,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62381bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:12, skipping insertion in model container [2020-09-04 16:11:12,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:11" (2/3) ... [2020-09-04 16:11:12,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62381bb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:12, skipping insertion in model container [2020-09-04 16:11:12,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:12" (3/3) ... [2020-09-04 16:11:12,409 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012b.c [2020-09-04 16:11:12,420 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:11:12,430 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:11:12,451 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:11:12,476 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:11:12,476 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:11:12,477 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:11:12,477 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:11:12,477 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:11:12,477 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:11:12,477 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:11:12,478 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:11:12,494 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 16:11:12,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 16:11:12,506 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:12,507 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] [2020-09-04 16:11:12,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:12,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:12,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1851120069, now seen corresponding path program 1 times [2020-09-04 16:11:12,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:12,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436108172] [2020-09-04 16:11:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:12,592 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:12,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:12,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:12,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:11:12,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:12,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 16:11:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:12,785 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 16:11:12,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436108172] [2020-09-04 16:11:12,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:12,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:11:12,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967236327] [2020-09-04 16:11:12,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:11:12,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:12,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:11:12,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:11:12,816 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-09-04 16:11:13,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:13,038 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2020-09-04 16:11:13,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:11:13,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-04 16:11:13,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:13,051 INFO L225 Difference]: With dead ends: 118 [2020-09-04 16:11:13,052 INFO L226 Difference]: Without dead ends: 58 [2020-09-04 16:11:13,057 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 16:11:13,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-04 16:11:13,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-04 16:11:13,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-04 16:11:13,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2020-09-04 16:11:13,113 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 30 [2020-09-04 16:11:13,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:13,114 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2020-09-04 16:11:13,114 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:11:13,114 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2020-09-04 16:11:13,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-04 16:11:13,116 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:13,117 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] [2020-09-04 16:11:13,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:11:13,118 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:13,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:13,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1434482942, now seen corresponding path program 1 times [2020-09-04 16:11:13,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:13,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818847938] [2020-09-04 16:11:13,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:13,121 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:13,271 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:13,322 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:13,361 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:11:13,361 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:11:13,362 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:11:13,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:11:13 BoogieIcfgContainer [2020-09-04 16:11:13,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:11:13,389 INFO L168 Benchmark]: Toolchain (without parser) took 1922.97 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 108.1 MB in the end (delta: -4.5 MB). Peak memory consumption was 58.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:13,390 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:13,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.27 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:13,392 INFO L168 Benchmark]: Boogie Preprocessor took 139.90 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 180.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:13,393 INFO L168 Benchmark]: RCFGBuilder took 474.42 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 160.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:13,394 INFO L168 Benchmark]: TraceAbstraction took 984.66 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 108.1 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:13,398 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 317.27 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.90 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.0 MB in the beginning and 180.2 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 474.42 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 160.0 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 984.66 ms. Allocated memory is still 202.9 MB. Free memory was 159.3 MB in the beginning and 108.1 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = -1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) [L12] __uint32_t ix; [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (ix) = gf_u.word [L19] ieee_float_shape_type sf_u; [L20] sf_u.word = (ix & 0x7fffffff) [L21] EXPR sf_u.value [L21] (x) = sf_u.value [L23] return x; [L47] RET, EXPR fabs_float(x) [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) [L28] __int32_t ix; [L30] ieee_float_shape_type gf_u; [L31] gf_u.value = (x) [L32] EXPR gf_u.word [L32] (ix) = gf_u.word [L34] ix &= 0x7fffffff [L35] return ((ix) == 0x7f800000L); [L50] RET, EXPR isinf_float(res) [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 11 SDslu, 40 SDs, 0 SdLazy, 70 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=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...