/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=WIDEST -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 [2020-08-18 22:40:45,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:40:45,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:40:45,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:40:45,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:40:45,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:40:45,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:40:45,165 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:40:45,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:40:45,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:40:45,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:40:45,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:40:45,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:40:45,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:40:45,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:40:45,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:40:45,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:40:45,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:40:45,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:40:45,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:40:45,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:40:45,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:40:45,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:40:45,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:40:45,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 22:40:45,205 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:40:45,207 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:40:45,208 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:40:45,209 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:40:45,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:40:45,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:40:45,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:40:45,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:40:45,249 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:40:45,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:40:45,249 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:40:45,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:40:45,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:40:45,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:40:45,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:40:45,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:40:45,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:40:45,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:40:45,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:40:45,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:40:45,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:40:45,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:40:45,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:40:45,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:40:45,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:40:45,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:45,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:40:45,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:40:45,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:40:45,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:40:45,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:40:45,253 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:40:45,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:40:45,254 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=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:40:45,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:40:45,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:40:45,607 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:40:45,609 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:40:45,610 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:40:45,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-18 22:40:45,675 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e23f0514/e7daa7d906074af3a28b0c67a9782ec5/FLAGa892df22e [2020-08-18 22:40:46,149 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:40:46,150 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-18 22:40:46,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e23f0514/e7daa7d906074af3a28b0c67a9782ec5/FLAGa892df22e [2020-08-18 22:40:46,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2e23f0514/e7daa7d906074af3a28b0c67a9782ec5 [2020-08-18 22:40:46,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:40:46,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:40:46,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:46,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:40:46,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:40:46,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:46,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f98ced9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46, skipping insertion in model container [2020-08-18 22:40:46,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:46,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:40:46,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:40:46,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:46,795 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:40:46,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:40:46,965 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:40:46,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46 WrapperNode [2020-08-18 22:40:46,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:40:46,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:40:46,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:40:46,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:40:46,977 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:46,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:46,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:46,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:47,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:47,013 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:47,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... [2020-08-18 22:40:47,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:40:47,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:40:47,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:40:47,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:40:47,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:40:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:40:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:40:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-18 22:40:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-18 22:40:47,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:40:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:40:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-18 22:40:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-18 22:40:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:40:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 22:40:47,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:40:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:40:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 22:40:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:40:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-18 22:40:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:40:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:40:47,083 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 22:40:47,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:40:47,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:40:47,562 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-18 22:40:47,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:47 BoogieIcfgContainer [2020-08-18 22:40:47,566 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:40:47,568 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:40:47,568 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:40:47,571 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:40:47,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:40:46" (1/3) ... [2020-08-18 22:40:47,572 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38af090b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:47, skipping insertion in model container [2020-08-18 22:40:47,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:40:46" (2/3) ... [2020-08-18 22:40:47,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38af090b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:40:47, skipping insertion in model container [2020-08-18 22:40:47,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:40:47" (3/3) ... [2020-08-18 22:40:47,575 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-18 22:40:47,587 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:40:47,596 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:40:47,608 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:40:47,629 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:40:47,630 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:40:47,630 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:40:47,630 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:40:47,630 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:40:47,631 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:40:47,631 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:40:47,631 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:40:47,650 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-18 22:40:47,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 22:40:47,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:47,659 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:40:47,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:47,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:47,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-18 22:40:47,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:47,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348918895] [2020-08-18 22:40:47,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:47,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 22:40:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:47,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 22:40:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 22:40:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 22:40:47,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348918895] [2020-08-18 22:40:47,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 22:40:47,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 22:40:47,940 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128109673] [2020-08-18 22:40:47,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 22:40:47,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 22:40:47,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 22:40:47,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 22:40:47,959 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-18 22:40:48,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 22:40:48,214 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-18 22:40:48,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 22:40:48,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 22:40:48,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 22:40:48,228 INFO L225 Difference]: With dead ends: 116 [2020-08-18 22:40:48,228 INFO L226 Difference]: Without dead ends: 56 [2020-08-18 22:40:48,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 22:40:48,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-18 22:40:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-18 22:40:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-18 22:40:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-18 22:40:48,284 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-18 22:40:48,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 22:40:48,284 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-18 22:40:48,285 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 22:40:48,285 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-18 22:40:48,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 22:40:48,286 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:40:48,286 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] [2020-08-18 22:40:48,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:40:48,287 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:40:48,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:40:48,288 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-18 22:40:48,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:40:48,288 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444363533] [2020-08-18 22:40:48,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:40:48,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:40:48,414 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:40:48,415 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:40:48,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 22:40:48,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:40:48 BoogieIcfgContainer [2020-08-18 22:40:48,439 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:40:48,442 INFO L168 Benchmark]: Toolchain (without parser) took 1914.88 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 101.7 MB in the beginning and 94.6 MB in the end (delta: 7.1 MB). Peak memory consumption was 68.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:48,443 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 22:40:48,444 INFO L168 Benchmark]: CACSL2BoogieTranslator took 438.46 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 101.5 MB in the beginning and 178.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:48,445 INFO L168 Benchmark]: Boogie Preprocessor took 53.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 176.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:48,446 INFO L168 Benchmark]: RCFGBuilder took 546.52 ms. Allocated memory is still 202.4 MB. Free memory was 176.2 MB in the beginning and 147.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:48,447 INFO L168 Benchmark]: TraceAbstraction took 871.49 ms. Allocated memory is still 202.4 MB. Free memory was 147.4 MB in the beginning and 94.6 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-08-18 22:40:48,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 141.0 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 438.46 ms. Allocated memory was 141.0 MB in the beginning and 202.4 MB in the end (delta: 61.3 MB). Free memory was 101.5 MB in the beginning and 178.9 MB in the end (delta: -77.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.70 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 176.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 546.52 ms. Allocated memory is still 202.4 MB. Free memory was 176.2 MB in the beginning and 147.4 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 871.49 ms. Allocated memory is still 202.4 MB. Free memory was 147.4 MB in the beginning and 94.6 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 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, 0.0s 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...