/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -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 0.1.25-5644d1e-m [2020-08-18 15:25:56,233 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 15:25:56,237 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 15:25:56,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 15:25:56,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 15:25:56,267 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 15:25:56,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 15:25:56,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 15:25:56,272 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 15:25:56,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 15:25:56,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 15:25:56,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 15:25:56,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 15:25:56,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 15:25:56,278 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 15:25:56,279 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 15:25:56,280 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 15:25:56,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 15:25:56,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 15:25:56,284 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 15:25:56,286 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 15:25:56,287 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 15:25:56,288 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 15:25:56,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 15:25:56,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 15:25:56,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 15:25:56,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 15:25:56,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 15:25:56,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 15:25:56,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 15:25:56,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 15:25:56,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 15:25:56,300 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 15:25:56,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 15:25:56,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 15:25:56,302 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 15:25:56,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 15:25:56,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 15:25:56,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 15:25:56,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 15:25:56,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 15:25:56,331 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 15:25:56,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 15:25:56,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 15:25:56,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 15:25:56,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 15:25:56,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 15:25:56,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 15:25:56,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 15:25:56,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 15:25:56,333 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 15:25:56,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 15:25:56,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 15:25:56,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 15:25:56,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 15:25:56,334 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 15:25:56,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 15:25:56,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 15:25:56,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:25:56,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 15:25:56,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 15:25:56,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 15:25:56,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 15:25:56,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 15:25:56,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 15:25:56,336 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 15:25:56,336 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-08-18 15:25:56,635 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 15:25:56,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 15:25:56,657 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 15:25:56,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 15:25:56,659 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 15:25:56,660 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-18 15:25:56,727 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a8d1cf6/5678619a2afd4735893fff617cf957de/FLAG936ce312d [2020-08-18 15:25:57,167 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 15:25:57,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-18 15:25:57,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a8d1cf6/5678619a2afd4735893fff617cf957de/FLAG936ce312d [2020-08-18 15:25:57,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a8d1cf6/5678619a2afd4735893fff617cf957de [2020-08-18 15:25:57,526 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 15:25:57,528 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 15:25:57,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:57,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 15:25:57,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 15:25:57,534 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:57,537 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26b4cf71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57, skipping insertion in model container [2020-08-18 15:25:57,538 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:57,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 15:25:57,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 15:25:57,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:57,823 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 15:25:57,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 15:25:57,966 INFO L208 MainTranslator]: Completed translation [2020-08-18 15:25:57,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57 WrapperNode [2020-08-18 15:25:57,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 15:25:57,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 15:25:57,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 15:25:57,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 15:25:57,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:57,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:57,989 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:57,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:58,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:58,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:58,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... [2020-08-18 15:25:58,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 15:25:58,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 15:25:58,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 15:25:58,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 15:25:58,023 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 15:25:58,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 15:25:58,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 15:25:58,082 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-18 15:25:58,082 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-18 15:25:58,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 15:25:58,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 15:25:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-18 15:25:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-18 15:25:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 15:25:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 15:25:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 15:25:58,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 15:25:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 15:25:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 15:25:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-18 15:25:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 15:25:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 15:25:58,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 15:25:58,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 15:25:58,617 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 15:25:58,618 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-18 15:25:58,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:58 BoogieIcfgContainer [2020-08-18 15:25:58,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 15:25:58,625 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 15:25:58,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 15:25:58,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 15:25:58,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 03:25:57" (1/3) ... [2020-08-18 15:25:58,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6273071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:58, skipping insertion in model container [2020-08-18 15:25:58,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 03:25:57" (2/3) ... [2020-08-18 15:25:58,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6273071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 03:25:58, skipping insertion in model container [2020-08-18 15:25:58,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 03:25:58" (3/3) ... [2020-08-18 15:25:58,632 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-18 15:25:58,643 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 15:25:58,651 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 15:25:58,666 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 15:25:58,692 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 15:25:58,692 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 15:25:58,692 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 15:25:58,692 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 15:25:58,693 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 15:25:58,693 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 15:25:58,693 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 15:25:58,693 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 15:25:58,715 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-18 15:25:58,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 15:25:58,722 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:58,724 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] [2020-08-18 15:25:58,724 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:58,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:58,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-18 15:25:58,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:58,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946420720] [2020-08-18 15:25:58,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:58,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 15:25:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:59,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 15:25:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:59,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 15:25:59,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 15:25:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 15:25:59,028 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946420720] [2020-08-18 15:25:59,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 15:25:59,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 15:25:59,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132155836] [2020-08-18 15:25:59,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 15:25:59,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 15:25:59,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 15:25:59,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 15:25:59,055 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-18 15:25:59,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 15:25:59,369 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-18 15:25:59,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 15:25:59,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 15:25:59,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 15:25:59,383 INFO L225 Difference]: With dead ends: 112 [2020-08-18 15:25:59,383 INFO L226 Difference]: Without dead ends: 55 [2020-08-18 15:25:59,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 15:25:59,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-18 15:25:59,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-18 15:25:59,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-18 15:25:59,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-18 15:25:59,431 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-18 15:25:59,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 15:25:59,431 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-18 15:25:59,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 15:25:59,432 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-18 15:25:59,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 15:25:59,433 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 15:25:59,433 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] [2020-08-18 15:25:59,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 15:25:59,434 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 15:25:59,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 15:25:59,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-18 15:25:59,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 15:25:59,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163974776] [2020-08-18 15:25:59,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 15:25:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 15:25:59,534 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 15:25:59,534 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 15:25:59,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 15:25:59,579 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 03:25:59 BoogieIcfgContainer [2020-08-18 15:25:59,579 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 15:25:59,582 INFO L168 Benchmark]: Toolchain (without parser) took 2053.24 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.5 MB in the beginning and 93.8 MB in the end (delta: 8.7 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:59,583 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 15:25:59,584 INFO L168 Benchmark]: CACSL2BoogieTranslator took 437.93 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 178.3 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:59,585 INFO L168 Benchmark]: Boogie Preprocessor took 54.19 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 176.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:59,586 INFO L168 Benchmark]: RCFGBuilder took 601.45 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 147.9 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:59,587 INFO L168 Benchmark]: TraceAbstraction took 954.35 ms. Allocated memory is still 201.9 MB. Free memory was 147.2 MB in the beginning and 93.8 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-08-18 15:25:59,591 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 437.93 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.1 MB in the beginning and 178.3 MB in the end (delta: -76.2 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.19 ms. Allocated memory is still 201.9 MB. Free memory was 178.3 MB in the beginning and 176.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 601.45 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 147.9 MB in the end (delta: 28.4 MB). Peak memory consumption was 28.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 954.35 ms. Allocated memory is still 201.9 MB. Free memory was 147.2 MB in the beginning and 93.8 MB in the end (delta: 53.4 MB). Peak memory consumption was 53.4 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, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [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)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [L131] CALL, EXPR fmod_float(x, y) [L18] __int32_t n, hx, hy, hz, ix, iy, sx, i; [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 [L34] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L35] return (x * y) / (x * y); [L131] RET, EXPR fmod_float(x, y) [L131] float res = fmod_float(x, y); [L134] COND TRUE res != x [L135] __VERIFIER_error() - 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, 0.1s 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...