/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 01:54:55,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 01:54:55,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 01:54:55,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 01:54:55,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 01:54:55,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 01:54:55,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 01:54:55,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 01:54:55,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 01:54:55,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 01:54:55,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 01:54:55,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 01:54:55,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 01:54:55,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 01:54:55,174 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 01:54:55,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 01:54:55,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 01:54:55,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 01:54:55,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 01:54:55,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 01:54:55,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 01:54:55,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 01:54:55,191 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 01:54:55,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 01:54:55,194 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 01:54:55,194 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 01:54:55,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 01:54:55,196 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 01:54:55,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 01:54:55,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 01:54:55,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 01:54:55,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 01:54:55,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 01:54:55,214 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 01:54:55,255 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 01:54:55,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 01:54:55,258 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 01:54:55,258 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 01:54:55,258 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 01:54:55,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 01:54:55,259 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 01:54:55,259 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 01:54:55,259 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 01:54:55,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 01:54:55,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 01:54:55,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 01:54:55,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 01:54:55,261 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 01:54:55,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 01:54:55,262 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 01:54:55,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 01:54:55,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 01:54:55,263 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 01:54:55,263 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 01:54:55,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 01:54:55,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 01:54:55,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 01:54:55,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 01:54:55,264 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 01:54:55,264 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 01:54:55,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 01:54:55,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 01:54:55,264 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 01:54:55,265 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=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 01:54:55,594 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 01:54:55,614 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 01:54:55,617 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 01:54:55,618 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 01:54:55,619 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 01:54:55,619 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2020-08-19 01:54:55,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39235927f/e51bbe5fb2a14b51a760f6cfaef5b4a0/FLAG966179664 [2020-08-19 01:54:56,215 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 01:54:56,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_0720.c [2020-08-19 01:54:56,225 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39235927f/e51bbe5fb2a14b51a760f6cfaef5b4a0/FLAG966179664 [2020-08-19 01:54:56,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39235927f/e51bbe5fb2a14b51a760f6cfaef5b4a0 [2020-08-19 01:54:56,561 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 01:54:56,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 01:54:56,564 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:56,564 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 01:54:56,567 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 01:54:56,568 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:56,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4314c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56, skipping insertion in model container [2020-08-19 01:54:56,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:56,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 01:54:56,608 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 01:54:56,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:56,798 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 01:54:56,831 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 01:54:56,953 INFO L208 MainTranslator]: Completed translation [2020-08-19 01:54:56,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56 WrapperNode [2020-08-19 01:54:56,954 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 01:54:56,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 01:54:56,955 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 01:54:56,955 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 01:54:56,968 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:56,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:56,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:56,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:56,991 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:56,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:57,000 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (1/1) ... [2020-08-19 01:54:57,003 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 01:54:57,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 01:54:57,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 01:54:57,004 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 01:54:57,005 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (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 01:54:57,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 01:54:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 01:54:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2020-08-19 01:54:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-08-19 01:54:57,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 01:54:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 01:54:57,066 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-19 01:54:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2020-08-19 01:54:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-08-19 01:54:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 01:54:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 01:54:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 01:54:57,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 01:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 01:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 01:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 01:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 01:54:57,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 01:54:57,431 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 01:54:57,431 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-19 01:54:57,436 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:57 BoogieIcfgContainer [2020-08-19 01:54:57,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 01:54:57,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 01:54:57,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 01:54:57,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 01:54:57,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 01:54:56" (1/3) ... [2020-08-19 01:54:57,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2d000c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:57, skipping insertion in model container [2020-08-19 01:54:57,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 01:54:56" (2/3) ... [2020-08-19 01:54:57,443 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2d000c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 01:54:57, skipping insertion in model container [2020-08-19 01:54:57,443 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 01:54:57" (3/3) ... [2020-08-19 01:54:57,445 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0720.c [2020-08-19 01:54:57,455 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 01:54:57,466 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 01:54:57,501 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 01:54:57,530 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 01:54:57,530 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 01:54:57,530 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 01:54:57,530 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 01:54:57,531 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 01:54:57,531 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 01:54:57,531 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 01:54:57,531 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 01:54:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-19 01:54:57,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 01:54:57,557 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:57,558 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 01:54:57,559 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:57,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:57,564 INFO L82 PathProgramCache]: Analyzing trace with hash 159633202, now seen corresponding path program 1 times [2020-08-19 01:54:57,571 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:57,571 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1421013156] [2020-08-19 01:54:57,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:57,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:57,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 01:54:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:57,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 01:54:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:57,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-19 01:54:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 01:54:57,823 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 01:54:57,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1421013156] [2020-08-19 01:54:57,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 01:54:57,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 01:54:57,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162621493] [2020-08-19 01:54:57,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 01:54:57,833 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 01:54:57,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 01:54:57,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 01:54:57,848 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-08-19 01:54:58,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 01:54:58,064 INFO L93 Difference]: Finished difference Result 84 states and 118 transitions. [2020-08-19 01:54:58,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 01:54:58,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-08-19 01:54:58,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 01:54:58,078 INFO L225 Difference]: With dead ends: 84 [2020-08-19 01:54:58,078 INFO L226 Difference]: Without dead ends: 42 [2020-08-19 01:54:58,082 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 01:54:58,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-08-19 01:54:58,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-08-19 01:54:58,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 01:54:58,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 52 transitions. [2020-08-19 01:54:58,126 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 52 transitions. Word has length 21 [2020-08-19 01:54:58,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 01:54:58,127 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 52 transitions. [2020-08-19 01:54:58,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 01:54:58,127 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 52 transitions. [2020-08-19 01:54:58,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 01:54:58,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 01:54:58,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 01:54:58,129 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 01:54:58,130 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 01:54:58,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 01:54:58,130 INFO L82 PathProgramCache]: Analyzing trace with hash 1643831456, now seen corresponding path program 1 times [2020-08-19 01:54:58,130 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 01:54:58,131 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253669291] [2020-08-19 01:54:58,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 01:54:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 01:54:58,188 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 01:54:58,188 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 01:54:58,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 01:54:58,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 01:54:58 BoogieIcfgContainer [2020-08-19 01:54:58,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 01:54:58,242 INFO L168 Benchmark]: Toolchain (without parser) took 1677.74 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 104.0 MB in the beginning and 110.8 MB in the end (delta: -6.7 MB). Peak memory consumption was 53.0 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:58,244 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 122.8 MB in the beginning and 122.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-19 01:54:58,245 INFO L168 Benchmark]: CACSL2BoogieTranslator took 390.60 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 104.0 MB in the beginning and 182.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:58,246 INFO L168 Benchmark]: Boogie Preprocessor took 48.56 ms. Allocated memory is still 203.9 MB. Free memory was 181.7 MB in the beginning and 179.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:58,247 INFO L168 Benchmark]: RCFGBuilder took 433.21 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 158.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:58,249 INFO L168 Benchmark]: TraceAbstraction took 800.98 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 110.8 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-08-19 01:54:58,259 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 144.2 MB. Free memory was 122.8 MB in the beginning and 122.4 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 390.60 ms. Allocated memory was 144.2 MB in the beginning and 203.9 MB in the end (delta: 59.8 MB). Free memory was 104.0 MB in the beginning and 182.6 MB in the end (delta: -78.6 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.56 ms. Allocated memory is still 203.9 MB. Free memory was 181.7 MB in the beginning and 179.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.21 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 158.1 MB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 800.98 ms. Allocated memory is still 203.9 MB. Free memory was 158.1 MB in the beginning and 110.8 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 13, overapproximation of someBinaryArithmeticFLOAToperation at line 30, overapproximation of bitwiseAnd at line 27. Possible FailurePath: [L15] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L91] float x = 0.0f / 0.0f; [L92] CALL, EXPR __ieee754_sqrtf(x) [L18] float z; [L19] __uint32_t r, hx; [L20] __int32_t ix, s, q, m, t, i; [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (ix) = gf_u.word [L27] hx = ix & 0x7fffffff [L29] COND TRUE !((hx) < 0x7f800000L) [L30] return x * x + x; [L92] RET, EXPR __ieee754_sqrtf(x) [L92] float res = __ieee754_sqrtf(x); [L95] CALL, EXPR isnan_float(res) [L13] return x != x; [L95] RET, EXPR isnan_float(res) [L95] COND TRUE !isnan_float(res) [L96] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 47 SDslu, 5 SDs, 0 SdLazy, 53 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 43 NumberOfCodeBlocks, 43 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 940 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...