/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:35,579 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:35,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:35,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:35,613 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:35,614 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:35,615 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:35,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:35,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:35,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:35,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:35,623 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:35,623 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:35,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:35,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:35,626 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:35,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:35,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:35,630 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:35,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:35,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:35,635 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:35,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:35,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:35,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:35,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:35,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:35,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:35,652 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 16:17:35,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:35,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:35,678 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:35,678 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:35,678 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:35,679 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:35,679 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:35,679 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:35,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:35,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:35,680 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:35,680 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:35,680 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:35,680 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:35,681 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:35,681 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:35,681 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:35,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:35,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:35,682 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:35,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:35,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:35,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:35,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:35,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:35,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:35,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:35,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:35,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:35,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:36,001 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:36,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:36,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:36,027 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:36,028 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:36,029 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-08-22 16:17:36,088 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248dc5140/894cfebb8ed1498d82dbe27ec9f8b2c3/FLAG8580e1dff [2020-08-22 16:17:36,501 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:36,502 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2020-08-22 16:17:36,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248dc5140/894cfebb8ed1498d82dbe27ec9f8b2c3/FLAG8580e1dff [2020-08-22 16:17:36,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/248dc5140/894cfebb8ed1498d82dbe27ec9f8b2c3 [2020-08-22 16:17:36,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:36,936 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:36,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:36,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:36,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:36,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:36" (1/1) ... [2020-08-22 16:17:36,945 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@627f88ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:36, skipping insertion in model container [2020-08-22 16:17:36,945 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:36" (1/1) ... [2020-08-22 16:17:36,954 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:36,976 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:37,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:37,163 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:37,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:37,216 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:37,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37 WrapperNode [2020-08-22 16:17:37,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:37,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:37,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:37,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:37,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (1/1) ... [2020-08-22 16:17:37,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (1/1) ... [2020-08-22 16:17:37,326 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (1/1) ... [2020-08-22 16:17:37,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (1/1) ... [2020-08-22 16:17:37,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (1/1) ... [2020-08-22 16:17:37,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (1/1) ... [2020-08-22 16:17:37,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (1/1) ... [2020-08-22 16:17:37,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:37,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:37,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:37,355 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:37,356 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (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 16:17:37,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:37,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-08-22 16:17:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-08-22 16:17:37,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 16:17:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-08-22 16:17:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:37,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-08-22 16:17:37,414 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:37,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:37,724 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:37,724 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:17:37,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:37 BoogieIcfgContainer [2020-08-22 16:17:37,730 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:37,732 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:37,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:37,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:37,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:36" (1/3) ... [2020-08-22 16:17:37,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8482b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:37, skipping insertion in model container [2020-08-22 16:17:37,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:37" (2/3) ... [2020-08-22 16:17:37,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8482b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:37, skipping insertion in model container [2020-08-22 16:17:37,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:37" (3/3) ... [2020-08-22 16:17:37,740 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2020-08-22 16:17:37,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:37,761 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:37,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:37,806 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:37,807 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:37,807 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:37,807 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:37,807 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:37,807 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:37,807 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:37,808 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:37,829 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-08-22 16:17:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:17:37,837 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:37,838 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] [2020-08-22 16:17:37,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:37,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1361541252, now seen corresponding path program 1 times [2020-08-22 16:17:37,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:37,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337214846] [2020-08-22 16:17:37,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:38,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:38,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:38,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:38,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 16:17:38,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:38,116 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 16:17:38,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337214846] [2020-08-22 16:17:38,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:38,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:38,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357335706] [2020-08-22 16:17:38,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:38,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:38,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:38,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:38,143 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-08-22 16:17:38,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:38,355 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2020-08-22 16:17:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:38,358 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-22 16:17:38,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:38,370 INFO L225 Difference]: With dead ends: 70 [2020-08-22 16:17:38,370 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 16:17:38,374 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 16:17:38,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 16:17:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-22 16:17:38,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 16:17:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2020-08-22 16:17:38,423 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2020-08-22 16:17:38,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:38,424 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2020-08-22 16:17:38,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:38,424 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2020-08-22 16:17:38,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 16:17:38,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:38,426 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] [2020-08-22 16:17:38,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:38,427 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:38,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1541897397, now seen corresponding path program 1 times [2020-08-22 16:17:38,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:38,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193504282] [2020-08-22 16:17:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:38,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:38,502 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:38,571 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:38,615 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:38,616 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:38,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:38,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:38 BoogieIcfgContainer [2020-08-22 16:17:38,651 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:38,654 INFO L168 Benchmark]: Toolchain (without parser) took 1717.23 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 99.7 MB in the beginning and 110.3 MB in the end (delta: -10.7 MB). Peak memory consumption was 46.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:38,655 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:38,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.23 ms. Allocated memory is still 144.2 MB. Free memory was 99.2 MB in the beginning and 88.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:38,657 INFO L168 Benchmark]: Boogie Preprocessor took 137.11 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 88.5 MB in the beginning and 177.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:38,658 INFO L168 Benchmark]: RCFGBuilder took 374.85 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 158.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:38,659 INFO L168 Benchmark]: TraceAbstraction took 919.81 ms. Allocated memory is still 200.8 MB. Free memory was 158.2 MB in the beginning and 110.3 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:38,663 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 144.2 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.23 ms. Allocated memory is still 144.2 MB. Free memory was 99.2 MB in the beginning and 88.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.11 ms. Allocated memory was 144.2 MB in the beginning and 200.8 MB in the end (delta: 56.6 MB). Free memory was 88.5 MB in the beginning and 177.8 MB in the end (delta: -89.3 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 374.85 ms. Allocated memory is still 200.8 MB. Free memory was 177.8 MB in the beginning and 158.9 MB in the end (delta: 19.0 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 919.81 ms. Allocated memory is still 200.8 MB. Free memory was 158.2 MB in the beginning and 110.3 MB in the end (delta: 47.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 71]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 58, overapproximation of someBinaryArithmeticFLOAToperation at line 45, overapproximation of bitwiseAnd at line 22. Possible FailurePath: [L12] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000003, huge_floor=1000000000000000000000000000000] [L66] float x = 0.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L67] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000006, huge_floor=1000000000000000000000000000000] [L15] __int32_t i0, j0; [L16] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000006, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000006] [L18] ieee_float_shape_type gf_u; [L19] gf_u.value = (x) [L20] EXPR gf_u.word [L20] (i0) = gf_u.word [L22] ix = (i0 & 0x7fffffff) [L23] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000006, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000006] [L24] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000006, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000006] [L44] COND TRUE !((ix) < 0x7f800000L) [L45] return x + x; VAL [\old(x)=1000000000000000000000000000006, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000006] [L67] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000006] [L67] float res = floor_float(x); [L70] CALL, EXPR isnan_float(res) VAL [\old(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000] [L58] return x != x; VAL [\old(x)=1000000000000000000000000000004, \result=0, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L70] RET, EXPR isnan_float(res) VAL [huge_floor=1000000000000000000000000000000, isnan_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000006] [L70] COND TRUE !isnan_float(res) [L71] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000006] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 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: 42 SDtfs, 38 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 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...