/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true -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 0.1.25-177f698 [2020-08-22 00:33:28,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:33:28,637 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:33:28,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:33:28,680 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:33:28,688 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:33:28,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:33:28,693 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:33:28,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:33:28,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:33:28,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:33:28,701 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:33:28,701 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:33:28,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:33:28,707 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:33:28,709 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:33:28,710 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:33:28,711 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:33:28,713 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:33:28,721 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:33:28,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:33:28,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:33:28,725 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:33:28,726 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:33:28,742 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:33:28,742 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:33:28,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:33:28,743 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:33:28,744 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:33:28,745 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-22 00:33:28,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:33:28,757 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:33:28,758 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:33:28,759 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 [2020-08-22 00:33:28,796 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:33:28,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:33:28,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:33:28,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:33:28,799 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:33:28,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:33:28,800 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:33:28,800 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:33:28,800 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:33:28,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:33:28,801 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:33:28,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:33:28,802 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:33:28,802 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:33:28,803 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:33:28,803 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:33:28,803 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:33:28,803 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:33:28,803 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:33:28,804 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:33:28,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:33:28,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:33:28,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:33:28,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:33:28,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:33:28,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:33:28,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:33:28,805 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:33:28,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:33:28,806 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=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true; [2020-08-22 00:33:29,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:33:29,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:33:29,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:33:29,138 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:33:29,138 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:33:29,139 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-22 00:33:29,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f62b946d0/07124f203dcc49a49d3bb4aff0eda9af/FLAGf4a2a4b1f [2020-08-22 00:33:29,623 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:33:29,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-08-22 00:33:29,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f62b946d0/07124f203dcc49a49d3bb4aff0eda9af/FLAGf4a2a4b1f [2020-08-22 00:33:29,969 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f62b946d0/07124f203dcc49a49d3bb4aff0eda9af [2020-08-22 00:33:29,980 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:33:29,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:33:29,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:29,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:33:29,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:33:29,987 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:29" (1/1) ... [2020-08-22 00:33:29,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@184fc857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:29, skipping insertion in model container [2020-08-22 00:33:29,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:33:29" (1/1) ... [2020-08-22 00:33:29,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:33:30,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:33:30,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:30,247 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:33:30,368 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:33:30,391 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:33:30,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30 WrapperNode [2020-08-22 00:33:30,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:33:30,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:33:30,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:33:30,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:33:30,404 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (1/1) ... [2020-08-22 00:33:30,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (1/1) ... [2020-08-22 00:33:30,415 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (1/1) ... [2020-08-22 00:33:30,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (1/1) ... [2020-08-22 00:33:30,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (1/1) ... [2020-08-22 00:33:30,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (1/1) ... [2020-08-22 00:33:30,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (1/1) ... [2020-08-22 00:33:30,447 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:33:30,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:33:30,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:33:30,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:33:30,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (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 [2020-08-22 00:33:30,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:33:30,520 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:33:30,520 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 00:33:30,521 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 00:33:30,521 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:33:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:33:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 00:33:30,521 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 00:33:30,522 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 00:33:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 00:33:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:33:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:33:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 00:33:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:33:30,523 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 00:33:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:33:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:33:30,524 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 00:33:30,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:33:30,980 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:33:30,980 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 00:33:30,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:30 BoogieIcfgContainer [2020-08-22 00:33:30,987 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:33:30,992 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:33:30,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:33:30,999 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:33:30,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:33:29" (1/3) ... [2020-08-22 00:33:31,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c3ad5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:31, skipping insertion in model container [2020-08-22 00:33:31,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:33:30" (2/3) ... [2020-08-22 00:33:31,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@35c3ad5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:33:31, skipping insertion in model container [2020-08-22 00:33:31,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:33:30" (3/3) ... [2020-08-22 00:33:31,007 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-08-22 00:33:31,018 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:33:31,026 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:33:31,041 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:33:31,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:33:31,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:33:31,065 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:33:31,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:33:31,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:33:31,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:33:31,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:33:31,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:33:31,085 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-08-22 00:33:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 00:33:31,092 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:31,093 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 00:33:31,094 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:31,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:31,100 INFO L82 PathProgramCache]: Analyzing trace with hash 1920116781, now seen corresponding path program 1 times [2020-08-22 00:33:31,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:31,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470603240] [2020-08-22 00:33:31,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:31,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:31,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:33:31,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:31,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:33:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:33:31,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 00:33:31,362 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470603240] [2020-08-22 00:33:31,365 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:33:31,365 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 00:33:31,366 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829707845] [2020-08-22 00:33:31,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 00:33:31,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:33:31,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 00:33:31,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 00:33:31,394 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2020-08-22 00:33:31,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:33:31,647 INFO L93 Difference]: Finished difference Result 116 states and 180 transitions. [2020-08-22 00:33:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:33:31,649 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 00:33:31,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:33:31,660 INFO L225 Difference]: With dead ends: 116 [2020-08-22 00:33:31,661 INFO L226 Difference]: Without dead ends: 56 [2020-08-22 00:33:31,665 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 [2020-08-22 00:33:31,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-08-22 00:33:31,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-08-22 00:33:31,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 00:33:31,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2020-08-22 00:33:31,717 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 19 [2020-08-22 00:33:31,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:33:31,718 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2020-08-22 00:33:31,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 00:33:31,718 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2020-08-22 00:33:31,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 00:33:31,720 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:33:31,721 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] [2020-08-22 00:33:31,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:33:31,722 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:33:31,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:33:31,722 INFO L82 PathProgramCache]: Analyzing trace with hash -2095475350, now seen corresponding path program 1 times [2020-08-22 00:33:31,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:33:31,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1210785792] [2020-08-22 00:33:31,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:33:31,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 00:33:31,815 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 00:33:31,815 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:33:31,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:33:31,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:33:31 BoogieIcfgContainer [2020-08-22 00:33:31,838 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:33:31,841 INFO L168 Benchmark]: Toolchain (without parser) took 1858.64 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.6 MB in the beginning and 96.3 MB in the end (delta: 6.3 MB). Peak memory consumption was 70.3 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:31,841 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 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:33:31,843 INFO L168 Benchmark]: CACSL2BoogieTranslator took 409.48 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 180.6 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:31,844 INFO L168 Benchmark]: Boogie Preprocessor took 54.27 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:31,844 INFO L168 Benchmark]: RCFGBuilder took 540.27 ms. Allocated memory is still 203.9 MB. Free memory was 177.8 MB in the beginning and 149.7 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:31,845 INFO L168 Benchmark]: TraceAbstraction took 846.33 ms. Allocated memory is still 203.9 MB. Free memory was 149.0 MB in the beginning and 96.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-08-22 00:33:31,849 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 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 409.48 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.4 MB in the beginning and 180.6 MB in the end (delta: -78.2 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.27 ms. Allocated memory is still 203.9 MB. Free memory was 180.6 MB in the beginning and 178.5 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 540.27 ms. Allocated memory is still 203.9 MB. Free memory was 177.8 MB in the beginning and 149.7 MB in the end (delta: 28.1 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 846.33 ms. Allocated memory is still 203.9 MB. Free memory was 149.0 MB in the beginning and 96.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 52.7 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...