/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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:46,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:46,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:46,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:46,052 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:46,053 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:46,055 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:46,056 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:46,058 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:46,059 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:46,060 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:46,061 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:46,061 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:46,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:46,063 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:46,064 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:46,065 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:46,066 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:46,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:46,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:46,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:46,072 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:46,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:46,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:46,076 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:46,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:46,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:46,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:46,085 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 16:17:46,107 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:46,108 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:46,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:46,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:46,109 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:46,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:46,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:46,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:46,110 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:46,110 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:46,110 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:46,111 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:46,111 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:46,111 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:46,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:46,111 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:46,112 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:46,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:46,112 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:46,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:46,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:46,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:46,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:46,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:46,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:46,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:46,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:46,114 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:46,114 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:46,114 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:46,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:46,431 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:46,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:46,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:46,439 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:46,440 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 16:17:46,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2829e387/467575d1e53b40bf910c03d82b7d7911/FLAGf8975e54f [2020-08-22 16:17:47,007 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:47,007 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 16:17:47,013 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2829e387/467575d1e53b40bf910c03d82b7d7911/FLAGf8975e54f [2020-08-22 16:17:47,349 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2829e387/467575d1e53b40bf910c03d82b7d7911 [2020-08-22 16:17:47,360 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:47,362 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:47,363 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:47,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:47,367 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:47,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,371 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac9a2b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47, skipping insertion in model container [2020-08-22 16:17:47,371 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,379 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:47,401 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:47,624 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:47,632 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:47,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:47,807 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:47,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47 WrapperNode [2020-08-22 16:17:47,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:47,809 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:47,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:47,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:47,819 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,847 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,858 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (1/1) ... [2020-08-22 16:17:47,863 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:47,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:47,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:47,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:47,864 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (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 16:17:47,925 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 16:17:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-22 16:17:47,926 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:47,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 16:17:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 16:17:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:47,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-22 16:17:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 16:17:47,928 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:48,412 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:48,412 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 16:17:48,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:48 BoogieIcfgContainer [2020-08-22 16:17:48,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:48,418 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:48,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:48,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:48,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:47" (1/3) ... [2020-08-22 16:17:48,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2197dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:48, skipping insertion in model container [2020-08-22 16:17:48,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:47" (2/3) ... [2020-08-22 16:17:48,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f2197dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:48, skipping insertion in model container [2020-08-22 16:17:48,424 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:48" (3/3) ... [2020-08-22 16:17:48,425 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-22 16:17:48,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:48,444 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:48,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:48,478 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:48,478 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:48,478 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:48,478 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:48,479 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:48,479 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:48,479 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:48,479 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-22 16:17:48,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 16:17:48,505 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:48,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:48,506 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:48,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:48,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-22 16:17:48,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:48,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134387977] [2020-08-22 16:17:48,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:48,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:48,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:48,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:48,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 16:17:48,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:48,758 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 16:17:48,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134387977] [2020-08-22 16:17:48,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:48,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:48,762 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895174808] [2020-08-22 16:17:48,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:48,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:48,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:48,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:48,786 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-22 16:17:49,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:49,062 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-22 16:17:49,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 16:17:49,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 16:17:49,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:49,076 INFO L225 Difference]: With dead ends: 112 [2020-08-22 16:17:49,076 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 16:17:49,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 16:17:49,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 16:17:49,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-22 16:17:49,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 16:17:49,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-22 16:17:49,131 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-22 16:17:49,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:49,132 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-22 16:17:49,132 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:49,133 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-22 16:17:49,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 16:17:49,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:49,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 16:17:49,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:49,135 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:49,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:49,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-22 16:17:49,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:49,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904136060] [2020-08-22 16:17:49,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:49,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:49,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:49,317 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:49,351 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:49,352 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:49,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:49,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:49 BoogieIcfgContainer [2020-08-22 16:17:49,391 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:49,393 INFO L168 Benchmark]: Toolchain (without parser) took 2030.91 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 101.3 MB in the beginning and 87.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 73.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:49,395 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 120.0 MB in the beginning and 119.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:49,418 INFO L168 Benchmark]: CACSL2BoogieTranslator took 445.33 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 100.9 MB in the beginning and 177.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:49,418 INFO L168 Benchmark]: Boogie Preprocessor took 54.19 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 174.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:49,419 INFO L168 Benchmark]: RCFGBuilder took 554.08 ms. Allocated memory is still 201.3 MB. Free memory was 174.9 MB in the beginning and 146.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:49,420 INFO L168 Benchmark]: TraceAbstraction took 972.36 ms. Allocated memory is still 201.3 MB. Free memory was 146.4 MB in the beginning and 87.7 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:49,424 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 120.0 MB in the beginning and 119.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 445.33 ms. Allocated memory was 141.0 MB in the beginning and 201.3 MB in the end (delta: 60.3 MB). Free memory was 100.9 MB in the beginning and 177.8 MB in the end (delta: -76.9 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.19 ms. Allocated memory is still 201.3 MB. Free memory was 177.8 MB in the beginning and 174.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 554.08 ms. Allocated memory is still 201.3 MB. Free memory was 174.9 MB in the beginning and 146.4 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 972.36 ms. Allocated memory is still 201.3 MB. Free memory was 146.4 MB in the beginning and 87.7 MB in the end (delta: 58.7 MB). Peak memory consumption was 58.7 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 someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=8589934602, \old(Zero_fmod)=8589934599, \old(Zero_fmod)=8589934595, one_fmod=1, Zero_fmod={3:0}] [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; VAL [one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L129] CALL isfinite_float(x) VAL [\old(x)=8589934594, one_fmod=1, Zero_fmod={3:0}] [L109] __int32_t ix; VAL [\old(x)=8589934594, one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); VAL [\old(x)=8589934594, \result=1, ix=2139095039, one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L129] RET isfinite_float(x) VAL [isfinite_float(x)=1, one_fmod=1, x=8589934594, Zero_fmod={3:0}] [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, Zero_fmod={3:0}] [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=8589934594, \old(y)=8589934593, one_fmod=1, x=8589934594, y=8589934593, 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)=8589934594, \old(y)=8589934593, one_fmod=1, sx=-1, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); VAL [\old(x)=8589934594, \old(y)=8589934593, hx=2139095040, hy=0, one_fmod=1, sx=-1, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L131] RET, EXPR fmod_float(x, y) VAL [fmod_float(x, y)=8589934592, one_fmod=1, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x VAL [one_fmod=1, res=8589934592, x=8589934594, y=8589934593, Zero_fmod={3:0}] [L135] __VERIFIER_error() VAL [one_fmod=1, res=8589934592, x=8589934594, y=8589934593, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...