/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 04:36:57,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 04:36:57,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 04:36:57,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 04:36:57,386 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 04:36:57,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 04:36:57,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 04:36:57,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 04:36:57,392 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 04:36:57,393 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 04:36:57,394 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 04:36:57,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 04:36:57,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 04:36:57,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 04:36:57,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 04:36:57,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 04:36:57,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 04:36:57,400 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 04:36:57,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 04:36:57,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 04:36:57,405 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 04:36:57,406 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 04:36:57,407 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 04:36:57,408 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 04:36:57,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 04:36:57,411 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 04:36:57,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 04:36:57,412 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 04:36:57,412 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 04:36:57,413 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 04:36:57,414 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 04:36:57,414 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 04:36:57,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 04:36:57,416 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 04:36:57,417 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 04:36:57,417 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 04:36:57,417 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 04:36:57,418 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 04:36:57,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 04:36:57,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 04:36:57,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 04:36:57,420 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 04:36:57,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 04:36:57,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 04:36:57,468 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 04:36:57,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 04:36:57,468 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 04:36:57,468 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 04:36:57,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 04:36:57,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 04:36:57,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 04:36:57,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 04:36:57,473 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 04:36:57,473 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 04:36:57,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 04:36:57,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 04:36:57,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 04:36:57,474 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 04:36:57,474 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 04:36:57,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 04:36:57,474 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 04:36:57,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 04:36:57,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 04:36:57,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 04:36:57,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 04:36:57,481 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 04:36:57,481 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 04:36:57,481 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 04:36:57,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 04:36:57,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 04:36:57,481 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 04:36:57,482 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=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-08-22 04:36:57,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 04:36:57,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 04:36:57,816 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 04:36:57,817 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 04:36:57,819 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 04:36:57,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 04:36:57,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46e53cb6a/dd74c0ac8e30417380d760ca5b57c779/FLAGd4cc26e64 [2020-08-22 04:36:58,384 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 04:36:58,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-08-22 04:36:58,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46e53cb6a/dd74c0ac8e30417380d760ca5b57c779/FLAGd4cc26e64 [2020-08-22 04:36:58,762 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46e53cb6a/dd74c0ac8e30417380d760ca5b57c779 [2020-08-22 04:36:58,771 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 04:36:58,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 04:36:58,773 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:58,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 04:36:58,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 04:36:58,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:58" (1/1) ... [2020-08-22 04:36:58,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d972e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:58, skipping insertion in model container [2020-08-22 04:36:58,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:36:58" (1/1) ... [2020-08-22 04:36:58,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 04:36:58,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 04:36:59,087 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:59,093 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 04:36:59,228 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 04:36:59,247 INFO L208 MainTranslator]: Completed translation [2020-08-22 04:36:59,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59 WrapperNode [2020-08-22 04:36:59,248 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 04:36:59,249 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 04:36:59,249 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 04:36:59,249 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 04:36:59,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (1/1) ... [2020-08-22 04:36:59,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (1/1) ... [2020-08-22 04:36:59,271 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (1/1) ... [2020-08-22 04:36:59,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (1/1) ... [2020-08-22 04:36:59,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (1/1) ... [2020-08-22 04:36:59,295 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (1/1) ... [2020-08-22 04:36:59,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (1/1) ... [2020-08-22 04:36:59,301 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 04:36:59,302 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 04:36:59,302 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 04:36:59,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 04:36:59,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (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 04:36:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 04:36:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 04:36:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-08-22 04:36:59,356 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-08-22 04:36:59,357 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 04:36:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 04:36:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 04:36:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-08-22 04:36:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 04:36:59,357 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 04:36:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 04:36:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 04:36:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 04:36:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 04:36:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-08-22 04:36:59,358 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 04:36:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 04:36:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 04:36:59,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 04:36:59,894 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 04:36:59,895 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-08-22 04:36:59,902 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:59 BoogieIcfgContainer [2020-08-22 04:36:59,902 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 04:36:59,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 04:36:59,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 04:36:59,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 04:36:59,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:36:58" (1/3) ... [2020-08-22 04:36:59,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e48ef1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:59, skipping insertion in model container [2020-08-22 04:36:59,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:36:59" (2/3) ... [2020-08-22 04:36:59,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e48ef1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:36:59, skipping insertion in model container [2020-08-22 04:36:59,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:36:59" (3/3) ... [2020-08-22 04:36:59,911 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-08-22 04:36:59,921 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 04:36:59,929 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 04:36:59,942 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 04:36:59,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 04:36:59,962 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 04:36:59,962 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 04:36:59,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 04:36:59,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 04:36:59,963 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 04:36:59,963 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 04:36:59,963 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 04:36:59,980 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2020-08-22 04:36:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-22 04:36:59,987 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:36:59,988 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] [2020-08-22 04:36:59,988 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:36:59,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:36:59,993 INFO L82 PathProgramCache]: Analyzing trace with hash -1081724134, now seen corresponding path program 1 times [2020-08-22 04:37:00,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:37:00,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409325646] [2020-08-22 04:37:00,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:37:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:37:00,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 04:37:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:37:00,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 04:37:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:37:00,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 04:37:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 04:37:00,314 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 04:37:00,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409325646] [2020-08-22 04:37:00,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 04:37:00,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 04:37:00,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308771612] [2020-08-22 04:37:00,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 04:37:00,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 04:37:00,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 04:37:00,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 04:37:00,342 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 4 states. [2020-08-22 04:37:00,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 04:37:00,614 INFO L93 Difference]: Finished difference Result 112 states and 175 transitions. [2020-08-22 04:37:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 04:37:00,616 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-22 04:37:00,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 04:37:00,625 INFO L225 Difference]: With dead ends: 112 [2020-08-22 04:37:00,626 INFO L226 Difference]: Without dead ends: 55 [2020-08-22 04:37:00,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 04:37:00,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-08-22 04:37:00,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-08-22 04:37:00,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 04:37:00,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 70 transitions. [2020-08-22 04:37:00,681 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 70 transitions. Word has length 25 [2020-08-22 04:37:00,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 04:37:00,681 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 70 transitions. [2020-08-22 04:37:00,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 04:37:00,682 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 70 transitions. [2020-08-22 04:37:00,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 04:37:00,684 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 04:37:00,684 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] [2020-08-22 04:37:00,684 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 04:37:00,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 04:37:00,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 04:37:00,685 INFO L82 PathProgramCache]: Analyzing trace with hash 1695884658, now seen corresponding path program 1 times [2020-08-22 04:37:00,685 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 04:37:00,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1678142425] [2020-08-22 04:37:00,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 04:37:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 04:37:00,790 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 04:37:00,790 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 04:37:00,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 04:37:00,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:37:00 BoogieIcfgContainer [2020-08-22 04:37:00,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 04:37:00,818 INFO L168 Benchmark]: Toolchain (without parser) took 2044.91 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 104.0 MB in the beginning and 94.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 71.0 MB. Max. memory is 7.1 GB. [2020-08-22 04:37:00,819 INFO L168 Benchmark]: CDTParser took 0.78 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 04:37:00,820 INFO L168 Benchmark]: CACSL2BoogieTranslator took 475.18 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.8 MB in the beginning and 179.6 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-08-22 04:37:00,821 INFO L168 Benchmark]: Boogie Preprocessor took 52.78 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-22 04:37:00,822 INFO L168 Benchmark]: RCFGBuilder took 600.14 ms. Allocated memory is still 202.9 MB. Free memory was 177.0 MB in the beginning and 148.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. [2020-08-22 04:37:00,823 INFO L168 Benchmark]: TraceAbstraction took 911.99 ms. Allocated memory is still 202.9 MB. Free memory was 148.8 MB in the beginning and 94.9 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. [2020-08-22 04:37:00,827 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.78 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 475.18 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 103.8 MB in the beginning and 179.6 MB in the end (delta: -75.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.78 ms. Allocated memory is still 202.9 MB. Free memory was 179.6 MB in the beginning and 177.0 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 600.14 ms. Allocated memory is still 202.9 MB. Free memory was 177.0 MB in the beginning and 148.8 MB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 911.99 ms. Allocated memory is still 202.9 MB. Free memory was 148.8 MB in the beginning and 94.9 MB in the end (delta: 53.9 MB). Peak memory consumption was 53.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 135]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 134, overapproximation of someUnaryDOUBLEoperation at line 14, overapproximation of bitwiseAnd at line 30, overapproximation of someBinaryArithmeticFLOAToperation at line 35, overapproximation of bitwiseXor at line 31. Possible FailurePath: [L12-L15] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L126] float x = __VERIFIER_nondet_float(); [L127] float y = -1.0f / 0.0f; [L129] CALL isfinite_float(x) [L109] __int32_t ix; [L111] ieee_float_shape_type gf_u; [L112] gf_u.value = (x) [L113] EXPR gf_u.word [L113] (ix) = gf_u.word [L115] ix &= 0x7fffffff [L116] return (((ix) < 0x7f800000L)); [L129] RET isfinite_float(x) [L129] COND TRUE isfinite_float(x) [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] COND TRUE res != x [L135] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 6 SDslu, 63 SDs, 0 SdLazy, 78 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred 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, 0.2s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...