/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-27 21:47:32,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-27 21:47:32,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-27 21:47:32,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-27 21:47:32,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-27 21:47:32,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-27 21:47:32,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-27 21:47:32,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-27 21:47:32,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-27 21:47:32,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-27 21:47:32,580 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-27 21:47:32,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-27 21:47:32,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-27 21:47:32,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-27 21:47:32,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-27 21:47:32,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-27 21:47:32,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-27 21:47:32,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-27 21:47:32,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-27 21:47:32,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-27 21:47:32,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-27 21:47:32,604 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-27 21:47:32,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-27 21:47:32,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-27 21:47:32,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-27 21:47:32,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-27 21:47:32,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-27 21:47:32,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-27 21:47:32,624 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-27 21:47:32,625 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-27 21:47:32,625 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-27 21:47:32,626 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-27 21:47:32,626 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-27 21:47:32,627 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-27 21:47:32,628 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-27 21:47:32,630 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-27 21:47:32,631 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 [2020-08-27 21:47:32,695 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-27 21:47:32,696 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-27 21:47:32,697 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-27 21:47:32,697 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-27 21:47:32,698 INFO L138 SettingsManager]: * Use SBE=true [2020-08-27 21:47:32,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-27 21:47:32,698 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-27 21:47:32,698 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-27 21:47:32,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-27 21:47:32,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-27 21:47:32,699 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-27 21:47:32,699 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-27 21:47:32,699 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-27 21:47:32,700 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-27 21:47:32,700 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-27 21:47:32,700 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-27 21:47:32,700 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-27 21:47:32,701 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-27 21:47:32,701 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-27 21:47:32,701 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-27 21:47:32,701 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-27 21:47:32,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-27 21:47:32,702 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-27 21:47:32,702 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-27 21:47:32,702 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-27 21:47:32,702 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-27 21:47:32,702 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-27 21:47:32,703 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-27 21:47:32,703 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-27 21:47:32,703 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 [2020-08-27 21:47:33,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-27 21:47:33,317 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-27 21:47:33,322 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-27 21:47:33,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-27 21:47:33,324 INFO L275 PluginConnector]: CDTParser initialized [2020-08-27 21:47:33,326 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-27 21:47:33,417 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ef07765/06764e98767140528ac0e80aa39b1a6f/FLAGd8d4079db [2020-08-27 21:47:33,999 INFO L306 CDTParser]: Found 1 translation units. [2020-08-27 21:47:34,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-27 21:47:34,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ef07765/06764e98767140528ac0e80aa39b1a6f/FLAGd8d4079db [2020-08-27 21:47:34,339 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e9ef07765/06764e98767140528ac0e80aa39b1a6f [2020-08-27 21:47:34,358 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-27 21:47:34,360 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-27 21:47:34,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:34,362 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-27 21:47:34,366 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-27 21:47:34,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,372 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78f5c670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34, skipping insertion in model container [2020-08-27 21:47:34,372 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,382 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-27 21:47:34,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-27 21:47:34,705 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:34,712 INFO L203 MainTranslator]: Completed pre-run [2020-08-27 21:47:34,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-27 21:47:34,873 INFO L208 MainTranslator]: Completed translation [2020-08-27 21:47:34,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34 WrapperNode [2020-08-27 21:47:34,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-27 21:47:34,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-27 21:47:34,875 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-27 21:47:34,875 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-27 21:47:34,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,905 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (1/1) ... [2020-08-27 21:47:34,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-27 21:47:34,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-27 21:47:34,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-27 21:47:34,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-27 21:47:34,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (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 [2020-08-27 21:47:35,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-27 21:47:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-27 21:47:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-27 21:47:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-27 21:47:35,024 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-27 21:47:35,024 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-27 21:47:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-27 21:47:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-27 21:47:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-27 21:47:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-27 21:47:35,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-27 21:47:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-27 21:47:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-27 21:47:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-27 21:47:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-27 21:47:35,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-27 21:47:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-27 21:47:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-27 21:47:35,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-27 21:47:35,534 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-27 21:47:35,535 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-27 21:47:35,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:35 BoogieIcfgContainer [2020-08-27 21:47:35,540 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-27 21:47:35,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-27 21:47:35,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-27 21:47:35,546 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-27 21:47:35,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 09:47:34" (1/3) ... [2020-08-27 21:47:35,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144c5e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:35, skipping insertion in model container [2020-08-27 21:47:35,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 09:47:34" (2/3) ... [2020-08-27 21:47:35,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@144c5e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 09:47:35, skipping insertion in model container [2020-08-27 21:47:35,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 09:47:35" (3/3) ... [2020-08-27 21:47:35,551 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-27 21:47:35,562 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-27 21:47:35,574 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-27 21:47:35,596 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-27 21:47:35,626 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-27 21:47:35,627 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-27 21:47:35,627 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-27 21:47:35,627 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-27 21:47:35,627 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-27 21:47:35,627 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-27 21:47:35,628 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-27 21:47:35,628 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-27 21:47:35,650 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-27 21:47:35,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-27 21:47:35,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:35,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-27 21:47:35,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:35,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-27 21:47:35,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:35,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700701285] [2020-08-27 21:47:35,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:35,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:35,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-27 21:47:35,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:35,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-27 21:47:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-27 21:47:35,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-27 21:47:35,967 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700701285] [2020-08-27 21:47:35,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-27 21:47:35,970 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-27 21:47:35,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515625273] [2020-08-27 21:47:35,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-27 21:47:35,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-27 21:47:36,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-27 21:47:36,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-27 21:47:36,004 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-27 21:47:36,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-27 21:47:36,279 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-27 21:47:36,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-27 21:47:36,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-27 21:47:36,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-27 21:47:36,295 INFO L225 Difference]: With dead ends: 116 [2020-08-27 21:47:36,295 INFO L226 Difference]: Without dead ends: 56 [2020-08-27 21:47:36,300 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 [2020-08-27 21:47:36,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-27 21:47:36,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-27 21:47:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-27 21:47:36,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-27 21:47:36,357 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-27 21:47:36,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-27 21:47:36,358 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-27 21:47:36,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-27 21:47:36,358 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-27 21:47:36,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-27 21:47:36,359 INFO L414 BasicCegarLoop]: Found error trace [2020-08-27 21:47:36,360 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] [2020-08-27 21:47:36,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-27 21:47:36,360 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-27 21:47:36,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-27 21:47:36,361 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-27 21:47:36,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-27 21:47:36,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1501854042] [2020-08-27 21:47:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-27 21:47:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-27 21:47:36,438 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-27 21:47:36,439 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-27 21:47:36,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-27 21:47:36,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:47:36 BoogieIcfgContainer [2020-08-27 21:47:36,469 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-27 21:47:36,472 INFO L168 Benchmark]: Toolchain (without parser) took 2110.94 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 103.3 MB in the beginning and 95.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 70.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,473 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,474 INFO L168 Benchmark]: CACSL2BoogieTranslator took 512.33 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.8 MB in the beginning and 178.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,475 INFO L168 Benchmark]: Boogie Preprocessor took 66.53 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 177.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,476 INFO L168 Benchmark]: RCFGBuilder took 599.29 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 147.9 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,477 INFO L168 Benchmark]: TraceAbstraction took 926.82 ms. Allocated memory is still 201.9 MB. Free memory was 147.9 MB in the beginning and 95.0 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-08-27 21:47:36,481 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.1 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 512.33 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 102.8 MB in the beginning and 178.9 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.53 ms. Allocated memory is still 201.9 MB. Free memory was 178.9 MB in the beginning and 177.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 599.29 ms. Allocated memory is still 201.9 MB. Free memory was 177.0 MB in the beginning and 147.9 MB in the end (delta: 29.1 MB). Peak memory consumption was 29.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 926.82 ms. Allocated memory is still 201.9 MB. Free memory was 147.9 MB in the beginning and 95.0 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 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: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...