/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --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-c90d42b [2020-09-24 23:44:35,998 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:36,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:36,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:36,029 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:36,030 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:36,032 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:36,034 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:36,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:36,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:36,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:36,040 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:36,040 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:36,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:36,043 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:36,044 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:36,045 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:36,047 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:36,049 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:36,051 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:36,055 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:36,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:36,060 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:36,062 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:36,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:36,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:36,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:36,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:36,069 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:36,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:36,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:36,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:36,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:36,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:36,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:36,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:36,081 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:36,081 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:36,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:36,082 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:36,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:36,094 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 [2020-09-24 23:44:36,146 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:36,147 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:36,149 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:36,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:36,150 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:36,150 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:36,150 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:36,151 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:36,151 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:36,151 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:36,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:36,152 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:36,153 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:36,153 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:36,153 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:36,154 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:36,154 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:36,154 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:36,154 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:36,154 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:36,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:36,155 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:36,155 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:36,155 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:36,156 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:36,156 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:36,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:36,156 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:36,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:36,156 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:44:36,669 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:36,690 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:36,698 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:36,700 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:36,701 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:36,702 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-24 23:44:36,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a040334e9/9310adb52feb4d2692d088250e128cbb/FLAG0e392cb95 [2020-09-24 23:44:37,364 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:37,366 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1130a.c [2020-09-24 23:44:37,377 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a040334e9/9310adb52feb4d2692d088250e128cbb/FLAG0e392cb95 [2020-09-24 23:44:37,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a040334e9/9310adb52feb4d2692d088250e128cbb [2020-09-24 23:44:37,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:37,692 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:37,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:37,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:37,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:37,699 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:37" (1/1) ... [2020-09-24 23:44:37,704 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13b36a92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:37, skipping insertion in model container [2020-09-24 23:44:37,704 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:37" (1/1) ... [2020-09-24 23:44:37,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:37,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:38,027 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:38,035 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:38,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:38,215 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:38,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38 WrapperNode [2020-09-24 23:44:38,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:38,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:38,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:38,217 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:38,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,246 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,246 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,280 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (1/1) ... [2020-09-24 23:44:38,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:38,285 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:38,285 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:38,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:38,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (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 [2020-09-24 23:44:38,359 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-24 23:44:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-24 23:44:38,360 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:38,360 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 23:44:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-24 23:44:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:38,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-24 23:44:38,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 23:44:38,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:38,945 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:38,945 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-24 23:44:38,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:38 BoogieIcfgContainer [2020-09-24 23:44:38,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:38,962 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:38,962 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:38,966 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:38,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:37" (1/3) ... [2020-09-24 23:44:38,969 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1977ce9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:38, skipping insertion in model container [2020-09-24 23:44:38,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:38" (2/3) ... [2020-09-24 23:44:38,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1977ce9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:38, skipping insertion in model container [2020-09-24 23:44:38,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:38" (3/3) ... [2020-09-24 23:44:38,973 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1130a.c [2020-09-24 23:44:38,986 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:38,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:39,024 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:39,062 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:39,063 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:39,063 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:39,063 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:39,064 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:39,064 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:39,064 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:39,064 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:39,094 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states. [2020-09-24 23:44:39,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-24 23:44:39,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:39,107 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:44:39,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:39,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:39,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1988505082, now seen corresponding path program 1 times [2020-09-24 23:44:39,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:39,130 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1959294679] [2020-09-24 23:44:39,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:39,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:39,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 23:44:39,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:39,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-24 23:44:39,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:39,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-09-24 23:44:39,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:39,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:44:39,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:39,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:39,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 23:44:39,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:39,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 23:44:39,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:39,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:39,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:39,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 23:44:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:39,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:39,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:39,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:44:39,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:44:39,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:44:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 23:44:39,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:39,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:44:39,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1959294679] [2020-09-24 23:44:39,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:39,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:39,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820769868] [2020-09-24 23:44:39,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:39,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:39,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:39,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:39,834 INFO L87 Difference]: Start difference. First operand 166 states. Second operand 4 states. [2020-09-24 23:44:40,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:40,377 INFO L93 Difference]: Finished difference Result 308 states and 372 transitions. [2020-09-24 23:44:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:40,379 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-24 23:44:40,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:40,396 INFO L225 Difference]: With dead ends: 308 [2020-09-24 23:44:40,396 INFO L226 Difference]: Without dead ends: 158 [2020-09-24 23:44:40,402 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 [2020-09-24 23:44:40,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-09-24 23:44:40,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-09-24 23:44:40,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-09-24 23:44:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 174 transitions. [2020-09-24 23:44:40,476 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 174 transitions. Word has length 43 [2020-09-24 23:44:40,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:40,477 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 174 transitions. [2020-09-24 23:44:40,477 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 174 transitions. [2020-09-24 23:44:40,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-24 23:44:40,480 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:40,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:44:40,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:40,481 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:40,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:40,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1298136515, now seen corresponding path program 1 times [2020-09-24 23:44:40,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:40,483 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918344015] [2020-09-24 23:44:40,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:40,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:40,558 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:40,562 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:40,572 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:40,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:40 BoogieIcfgContainer [2020-09-24 23:44:40,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:40,608 INFO L168 Benchmark]: Toolchain (without parser) took 2919.04 ms. Allocated memory was 143.7 MB in the beginning and 230.7 MB in the end (delta: 87.0 MB). Free memory was 105.7 MB in the beginning and 148.2 MB in the end (delta: -42.5 MB). Peak memory consumption was 44.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,611 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 23:44:40,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 523.09 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 105.0 MB in the beginning and 182.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,614 INFO L168 Benchmark]: Boogie Preprocessor took 67.40 ms. Allocated memory is still 205.0 MB. Free memory was 182.0 MB in the beginning and 179.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,616 INFO L168 Benchmark]: RCFGBuilder took 673.38 ms. Allocated memory is still 205.0 MB. Free memory was 179.5 MB in the beginning and 142.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,618 INFO L168 Benchmark]: TraceAbstraction took 1642.83 ms. Allocated memory was 205.0 MB in the beginning and 230.7 MB in the end (delta: 25.7 MB). Free memory was 142.0 MB in the beginning and 148.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 19.5 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:40,628 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 523.09 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 105.0 MB in the beginning and 182.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.40 ms. Allocated memory is still 205.0 MB. Free memory was 182.0 MB in the beginning and 179.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 673.38 ms. Allocated memory is still 205.0 MB. Free memory was 179.5 MB in the beginning and 142.6 MB in the end (delta: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1642.83 ms. Allocated memory was 205.0 MB in the beginning and 230.7 MB in the end (delta: 25.7 MB). Free memory was 142.0 MB in the beginning and 148.2 MB in the end (delta: -6.1 MB). Peak memory consumption was 19.5 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 32, 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, 166 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 179 SDtfs, 39 SDslu, 129 SDs, 0 SdLazy, 195 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=166occurred 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, 0.4s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 3150 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...