/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -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 0.1.25-5644d1e-m [2020-08-19 03:32:03,466 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:32:03,469 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:32:03,506 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:32:03,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:32:03,515 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:32:03,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:32:03,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:32:03,524 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:32:03,527 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:32:03,528 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:32:03,529 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:32:03,529 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:32:03,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:32:03,534 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:32:03,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:32:03,538 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:32:03,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:32:03,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:32:03,548 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:32:03,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:32:03,551 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:32:03,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:32:03,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:32:03,565 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:32:03,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:32:03,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:32:03,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:32:03,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:32:03,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 03:32:03,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:32:03,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:32:03,576 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:32:03,576 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 [2020-08-19 03:32:03,613 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:32:03,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:32:03,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:32:03,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:32:03,616 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:32:03,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:32:03,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:32:03,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:32:03,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:32:03,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:32:03,618 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:32:03,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:32:03,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:32:03,619 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:32:03,619 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:32:03,619 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:32:03,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:32:03,620 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:32:03,620 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:32:03,620 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:32:03,620 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:32:03,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:32:03,621 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:32:03,621 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:32:03,621 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:32:03,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:32:03,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:32:03,622 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:32:03,622 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:32:03,622 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:32:03,915 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:32:03,928 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:32:03,931 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:32:03,933 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:32:03,933 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:32:03,934 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-19 03:32:04,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d590488a/3e1ecb95f3874fa9a486555357d6a738/FLAGf07bd337f [2020-08-19 03:32:04,503 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:32:04,503 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-19 03:32:04,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d590488a/3e1ecb95f3874fa9a486555357d6a738/FLAGf07bd337f [2020-08-19 03:32:04,838 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d590488a/3e1ecb95f3874fa9a486555357d6a738 [2020-08-19 03:32:04,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:32:04,851 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:32:04,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:32:04,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:32:04,856 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:32:04,857 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:32:04" (1/1) ... [2020-08-19 03:32:04,860 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1215f1b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:04, skipping insertion in model container [2020-08-19 03:32:04,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:32:04" (1/1) ... [2020-08-19 03:32:04,869 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:32:04,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:32:05,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:32:05,172 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:32:05,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:32:05,324 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:32:05,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05 WrapperNode [2020-08-19 03:32:05,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:32:05,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:32:05,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:32:05,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:32:05,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,346 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,360 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,372 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (1/1) ... [2020-08-19 03:32:05,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:32:05,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:32:05,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:32:05,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:32:05,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (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 [2020-08-19 03:32:05,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:32:05,434 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:32:05,434 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-19 03:32:05,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-19 03:32:05,435 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:32:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:32:05,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 03:32:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-19 03:32:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:32:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 03:32:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:32:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:32:05,436 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 03:32:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:32:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-19 03:32:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:32:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:32:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-19 03:32:05,437 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:32:05,934 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:32:05,935 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-19 03:32:05,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:32:05 BoogieIcfgContainer [2020-08-19 03:32:05,939 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:32:05,940 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:32:05,940 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:32:05,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:32:05,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:32:04" (1/3) ... [2020-08-19 03:32:05,944 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d42cbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:32:05, skipping insertion in model container [2020-08-19 03:32:05,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:32:05" (2/3) ... [2020-08-19 03:32:05,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d42cbb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:32:05, skipping insertion in model container [2020-08-19 03:32:05,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:32:05" (3/3) ... [2020-08-19 03:32:05,947 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-19 03:32:05,956 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:32:05,965 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:32:05,979 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:32:06,006 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:32:06,006 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:32:06,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:32:06,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:32:06,007 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:32:06,007 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:32:06,007 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:32:06,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:32:06,028 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-19 03:32:06,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:32:06,035 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:06,036 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:32:06,036 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:06,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-19 03:32:06,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:06,050 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338058423] [2020-08-19 03:32:06,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:06,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:32:06,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:06,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-19 03:32:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:32:06,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:32:06,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338058423] [2020-08-19 03:32:06,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:32:06,338 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:32:06,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684340274] [2020-08-19 03:32:06,345 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:32:06,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:32:06,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:32:06,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:32:06,364 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-19 03:32:06,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:32:06,619 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-19 03:32:06,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:32:06,621 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-19 03:32:06,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:32:06,633 INFO L225 Difference]: With dead ends: 116 [2020-08-19 03:32:06,634 INFO L226 Difference]: Without dead ends: 56 [2020-08-19 03:32:06,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:32:06,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-19 03:32:06,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-19 03:32:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-19 03:32:06,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-19 03:32:06,687 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-19 03:32:06,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:32:06,688 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-19 03:32:06,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:32:06,688 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-19 03:32:06,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 03:32:06,690 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:32:06,690 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] [2020-08-19 03:32:06,690 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:32:06,691 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:32:06,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:32:06,692 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-19 03:32:06,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:32:06,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1359114984] [2020-08-19 03:32:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:32:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:32:06,760 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:32:06,760 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:32:06,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:32:06,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:32:06 BoogieIcfgContainer [2020-08-19 03:32:06,809 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:32:06,812 INFO L168 Benchmark]: Toolchain (without parser) took 1960.13 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.4 MB in the beginning and 96.2 MB in the end (delta: 6.2 MB). Peak memory consumption was 69.1 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,813 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 473.20 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 179.5 MB in the end (delta: -77.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,815 INFO L168 Benchmark]: Boogie Preprocessor took 56.96 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 177.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,816 INFO L168 Benchmark]: RCFGBuilder took 556.12 ms. Allocated memory is still 202.9 MB. Free memory was 176.8 MB in the beginning and 148.9 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,817 INFO L168 Benchmark]: TraceAbstraction took 868.73 ms. Allocated memory is still 202.9 MB. Free memory was 148.2 MB in the beginning and 96.2 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:32:06,821 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 473.20 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.2 MB in the beginning and 179.5 MB in the end (delta: -77.3 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.96 ms. Allocated memory is still 202.9 MB. Free memory was 179.5 MB in the beginning and 177.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 556.12 ms. Allocated memory is still 202.9 MB. Free memory was 176.8 MB in the beginning and 148.9 MB in the end (delta: 28.0 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 868.73 ms. Allocated memory is still 202.9 MB. Free memory was 148.2 MB in the beginning and 96.2 MB in the end (delta: 52.0 MB). Peak memory consumption was 52.0 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, }; [L126] float x = 0.0f; [L127] float y = __VERIFIER_nondet_float(); [L129] COND TRUE (y < 0.0f || y > 0.0f) [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] EXPR res == 0.0f && __signbit_float(res) == 0 [L134] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 61 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, 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, 0.1s 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, 0.0s 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...