/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:45,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:45,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:45,134 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:45,134 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:45,135 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:45,137 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:45,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:45,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:45,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:45,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:45,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:45,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:45,144 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:45,145 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:45,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:45,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:45,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:45,150 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:45,152 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:45,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:45,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:45,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:45,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:45,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 16:17:45,161 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 16:17:45,162 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 16:17:45,163 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 16:17:45,163 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 16:17:45,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 16:17:45,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 16:17:45,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 16:17:45,168 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 16:17:45,169 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 16:17:45,170 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 16:17:45,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 16:17:45,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 16:17:45,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 16:17:45,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:45,181 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:45,189 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:45,190 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 16:17:45,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:45,215 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:45,217 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:45,217 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:45,217 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:45,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:45,218 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:45,218 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:45,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:45,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:45,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:45,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:45,219 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:45,219 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:45,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:45,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:45,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:45,220 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:45,220 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:45,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:45,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:45,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:45,221 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:45,221 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:45,221 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:45,221 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:45,222 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:45,222 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:45,222 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:45,222 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:45,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:45,514 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:45,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:45,519 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:45,519 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:45,520 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-22 16:17:45,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483c16226/ff9f5a0fd1e0424aac9083ae7162a51b/FLAG1cead0805 [2020-08-22 16:17:46,112 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:46,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-22 16:17:46,121 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483c16226/ff9f5a0fd1e0424aac9083ae7162a51b/FLAG1cead0805 [2020-08-22 16:17:46,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/483c16226/ff9f5a0fd1e0424aac9083ae7162a51b [2020-08-22 16:17:46,420 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:46,422 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:46,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:46,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:46,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:46,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a64d93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46, skipping insertion in model container [2020-08-22 16:17:46,431 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,439 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:46,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:46,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:46,720 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:46,837 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:46,857 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:46,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46 WrapperNode [2020-08-22 16:17:46,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:46,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:46,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:46,859 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:46,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,880 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,894 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,906 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (1/1) ... [2020-08-22 16:17:46,910 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:46,913 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:46,913 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:46,913 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:46,914 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (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 16:17:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:46,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 16:17:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 16:17:46,979 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:46,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 16:17:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 16:17:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:46,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:46,981 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:46,982 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 16:17:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:46,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 16:17:46,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:47,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:47,472 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 16:17:47,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:47 BoogieIcfgContainer [2020-08-22 16:17:47,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:47,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:47,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:47,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:47,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:46" (1/3) ... [2020-08-22 16:17:47,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dd20f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:47, skipping insertion in model container [2020-08-22 16:17:47,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:46" (2/3) ... [2020-08-22 16:17:47,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20dd20f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:47, skipping insertion in model container [2020-08-22 16:17:47,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:47" (3/3) ... [2020-08-22 16:17:47,485 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-22 16:17:47,495 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:47,504 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:47,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:47,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:47,540 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:47,540 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:47,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:47,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:47,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:47,541 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:47,541 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:47,558 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-22 16:17:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 16:17:47,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:47,566 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 16:17:47,566 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:47,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:47,571 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-22 16:17:47,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:47,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465457650] [2020-08-22 16:17:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:47,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:47,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 16:17:47,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:47,833 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 16:17:47,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465457650] [2020-08-22 16:17:47,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:47,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:47,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931518155] [2020-08-22 16:17:47,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:47,842 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:47,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:47,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:47,861 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-22 16:17:48,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:48,120 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-22 16:17:48,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:17:48,122 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 16:17:48,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:48,134 INFO L225 Difference]: With dead ends: 116 [2020-08-22 16:17:48,134 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 16:17:48,138 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 16:17:48,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 16:17:48,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-22 16:17:48,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 16:17:48,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-22 16:17:48,188 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-22 16:17:48,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:48,188 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-22 16:17:48,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:48,189 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-22 16:17:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 16:17:48,190 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:48,190 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] [2020-08-22 16:17:48,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:48,191 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:48,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:48,192 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-22 16:17:48,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:48,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894993060] [2020-08-22 16:17:48,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:48,268 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:48,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:48,381 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:48,382 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:48,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:48,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:48 BoogieIcfgContainer [2020-08-22 16:17:48,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:48,422 INFO L168 Benchmark]: Toolchain (without parser) took 1999.61 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 91.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 74.1 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:48,423 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:48,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.74 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 178.9 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:48,425 INFO L168 Benchmark]: Boogie Preprocessor took 51.32 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 176.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:48,426 INFO L168 Benchmark]: RCFGBuilder took 563.47 ms. Allocated memory is still 202.4 MB. Free memory was 176.2 MB in the beginning and 147.8 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:48,427 INFO L168 Benchmark]: TraceAbstraction took 941.96 ms. Allocated memory is still 202.4 MB. Free memory was 147.8 MB in the beginning and 91.1 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:48,446 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.0 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 434.74 ms. Allocated memory was 140.0 MB in the beginning and 202.4 MB in the end (delta: 62.4 MB). Free memory was 102.6 MB in the beginning and 178.9 MB in the end (delta: -76.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.32 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 176.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 563.47 ms. Allocated memory is still 202.4 MB. Free memory was 176.2 MB in the beginning and 147.8 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 941.96 ms. Allocated memory is still 202.4 MB. Free memory was 147.8 MB in the beginning and 91.1 MB in the end (delta: 56.7 MB). Peak memory consumption was 56.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of bitwiseXor at line 31, overapproximation of someBinaryArithmeticFLOAToperation at line 35. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967306, \old(Zero_fmod)=4294967298, \old(Zero_fmod)=4294967304, one_fmod=1, Zero_fmod={3:0}] [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) VAL [one_fmod=1, x=0, y=4294967299, Zero_fmod={3:0}] [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=0, \old(y)=4294967299, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967299, one_fmod=1, x=0, y=4294967299, Zero_fmod={3:0}] [L21] ieee_float_shape_type gf_u; [L22] gf_u.value = (x) [L23] EXPR gf_u.word [L23] (hx) = gf_u.word [L26] ieee_float_shape_type gf_u; [L27] gf_u.value = (y) [L28] EXPR gf_u.word [L28] (hy) = gf_u.word [L30] sx = hx & 0x80000000 [L31] hx ^= sx [L32] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=4294967299, one_fmod=1, sx=-1, x=0, y=4294967299, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967299, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=0, y=4294967299, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=4294967301, one_fmod=1, x=0, y=4294967299, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [one_fmod=1, res=4294967301, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=4294967299, Zero_fmod={3:0}] [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() VAL [one_fmod=1, res=4294967301, x=0, y=4294967299, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 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: 75 SDtfs, 14 SDslu, 61 SDs, 0 SdLazy, 80 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=61occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 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...