/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1011b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:30,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:30,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:30,514 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:30,515 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:30,516 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:30,517 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:30,519 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:30,521 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:30,522 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:30,523 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:30,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:30,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:30,525 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:30,526 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:30,527 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:30,528 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:30,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:30,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:30,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:30,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:30,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:30,537 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:30,538 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:30,540 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:30,548 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:30,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:30,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:30,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 16:17:30,578 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:30,580 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:30,582 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:30,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:30,583 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:30,583 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:30,583 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:30,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:30,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:30,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:30,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:30,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:30,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:30,584 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:30,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:30,586 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:30,586 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:30,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:30,587 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:30,587 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:30,587 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:30,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:30,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:30,588 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:30,588 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:30,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:30,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:30,589 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:30,589 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:30,589 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:30,909 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:30,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:30,927 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:30,929 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:30,929 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:30,930 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1011b.c [2020-08-22 16:17:30,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a84bc871/de0de1aa1aa04a968149b007789633ac/FLAG6d4f2a00b [2020-08-22 16:17:31,422 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:31,423 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1011b.c [2020-08-22 16:17:31,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a84bc871/de0de1aa1aa04a968149b007789633ac/FLAG6d4f2a00b [2020-08-22 16:17:31,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a84bc871/de0de1aa1aa04a968149b007789633ac [2020-08-22 16:17:31,841 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:31,843 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:31,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:31,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:31,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:31,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:31" (1/1) ... [2020-08-22 16:17:31,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a0bf9df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:31, skipping insertion in model container [2020-08-22 16:17:31,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:31" (1/1) ... [2020-08-22 16:17:31,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:31,885 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:32,084 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:32,088 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:32,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:32,134 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:32,135 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32 WrapperNode [2020-08-22 16:17:32,135 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:32,136 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:32,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:32,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:32,223 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (1/1) ... [2020-08-22 16:17:32,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (1/1) ... [2020-08-22 16:17:32,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (1/1) ... [2020-08-22 16:17:32,237 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (1/1) ... [2020-08-22 16:17:32,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (1/1) ... [2020-08-22 16:17:32,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (1/1) ... [2020-08-22 16:17:32,254 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (1/1) ... [2020-08-22 16:17:32,257 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:32,257 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:32,258 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:32,258 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:32,259 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (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 16:17:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-08-22 16:17:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 16:17:32,316 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:32,316 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 16:17:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-08-22 16:17:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:32,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:32,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 16:17:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:32,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:32,676 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:32,677 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 16:17:32,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:32 BoogieIcfgContainer [2020-08-22 16:17:32,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:32,682 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:32,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:32,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:32,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:31" (1/3) ... [2020-08-22 16:17:32,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e8c15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:32, skipping insertion in model container [2020-08-22 16:17:32,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:32" (2/3) ... [2020-08-22 16:17:32,687 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42e8c15a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:32, skipping insertion in model container [2020-08-22 16:17:32,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:32" (3/3) ... [2020-08-22 16:17:32,689 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011b.c [2020-08-22 16:17:32,700 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:32,707 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:32,718 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:32,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:32,743 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:32,744 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:32,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:32,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:32,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:32,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:32,744 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-08-22 16:17:32,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-08-22 16:17:32,770 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:32,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:32,772 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:32,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:32,778 INFO L82 PathProgramCache]: Analyzing trace with hash -2014572178, now seen corresponding path program 1 times [2020-08-22 16:17:32,788 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:32,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239350566] [2020-08-22 16:17:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:32,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:32,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:32,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:33,005 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 16:17:33,006 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239350566] [2020-08-22 16:17:33,007 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:33,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:33,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474789733] [2020-08-22 16:17:33,014 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:33,014 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:33,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:33,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:33,028 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-08-22 16:17:33,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:33,193 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-08-22 16:17:33,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:33,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-08-22 16:17:33,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:33,204 INFO L225 Difference]: With dead ends: 56 [2020-08-22 16:17:33,205 INFO L226 Difference]: Without dead ends: 28 [2020-08-22 16:17:33,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 16:17:33,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-22 16:17:33,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-08-22 16:17:33,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-22 16:17:33,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-08-22 16:17:33,249 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2020-08-22 16:17:33,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:33,249 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-08-22 16:17:33,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:33,250 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-08-22 16:17:33,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:17:33,251 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:33,251 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:33,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:33,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:33,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:33,252 INFO L82 PathProgramCache]: Analyzing trace with hash 516358161, now seen corresponding path program 1 times [2020-08-22 16:17:33,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:33,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673621012] [2020-08-22 16:17:33,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:33,293 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:33,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:33,341 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:33,342 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:33,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:33,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:33 BoogieIcfgContainer [2020-08-22 16:17:33,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:33,372 INFO L168 Benchmark]: Toolchain (without parser) took 1528.22 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 103.1 MB in the beginning and 121.3 MB in the end (delta: -18.2 MB). Peak memory consumption was 43.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:33,373 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:33,374 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.32 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:33,375 INFO L168 Benchmark]: Boogie Preprocessor took 121.09 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.5 MB in the beginning and 179.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:33,376 INFO L168 Benchmark]: RCFGBuilder took 423.81 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 161.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:33,377 INFO L168 Benchmark]: TraceAbstraction took 686.97 ms. Allocated memory is still 201.9 MB. Free memory was 161.0 MB in the beginning and 121.3 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:33,381 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.32 ms. Allocated memory is still 140.0 MB. Free memory was 102.8 MB in the beginning and 92.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.09 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.5 MB in the beginning and 179.0 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 423.81 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 161.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 686.97 ms. Allocated memory is still 201.9 MB. Free memory was 161.0 MB in the beginning and 121.3 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of someUnaryFLOAToperation at line 45, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = -0.0f; [L46] CALL, EXPR fabs_float(x) VAL [\old(x)=11] [L13] __uint32_t ix; VAL [\old(x)=11, x=11] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; VAL [\old(x)=11, \result=8, ix=12, x=8] [L46] RET, EXPR fabs_float(x) VAL [fabs_float(x)=8, x=11] [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=8, res == 0.0f && __signbit_float(res) == 0=0, x=11] [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() VAL [res=8, x=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 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...