/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=HIGHLEXORDER --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-c90d42b [2020-09-24 22:37:27,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:37:27,076 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:37:27,104 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:37:27,104 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:37:27,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:37:27,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:37:27,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:37:27,114 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:37:27,117 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:37:27,118 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:37:27,121 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:37:27,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:37:27,122 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:37:27,123 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:37:27,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:37:27,129 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:37:27,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:37:27,133 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:37:27,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:37:27,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:37:27,139 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:37:27,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:37:27,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:37:27,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:37:27,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:37:27,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:37:27,153 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:37:27,154 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:37:27,156 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:37:27,156 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:37:27,164 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:37:27,165 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:37:27,166 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:37:27,169 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:37:27,170 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:37:27,171 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:37:27,171 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:37:27,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:37:27,172 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:37:27,173 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:37:27,174 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 22:37:27,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:37:27,223 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:37:27,225 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:37:27,225 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:37:27,225 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:37:27,226 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:37:27,226 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:37:27,226 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:37:27,226 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:37:27,226 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:37:27,228 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:37:27,228 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:37:27,228 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:37:27,228 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:37:27,229 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:37:27,229 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:37:27,229 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:37:27,229 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:37:27,229 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:37:27,230 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:37:27,230 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:37:27,230 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:37:27,230 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:37:27,230 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:37:27,231 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:37:27,231 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:37:27,231 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:37:27,231 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:37:27,231 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:37:27,232 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:37:27,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:37:27,803 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:37:27,808 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:37:27,810 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:37:27,810 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:37:27,811 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-24 22:37:27,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96df38a4b/4bc533581eb34225a5e52d9eea8232c9/FLAG90a0a8d0f [2020-09-24 22:37:28,471 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:37:28,472 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1131b.c [2020-09-24 22:37:28,483 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96df38a4b/4bc533581eb34225a5e52d9eea8232c9/FLAG90a0a8d0f [2020-09-24 22:37:28,770 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/96df38a4b/4bc533581eb34225a5e52d9eea8232c9 [2020-09-24 22:37:28,785 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:37:28,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:37:28,793 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:28,793 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:37:28,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:37:28,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:28" (1/1) ... [2020-09-24 22:37:28,803 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ad76f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:28, skipping insertion in model container [2020-09-24 22:37:28,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:37:28" (1/1) ... [2020-09-24 22:37:28,813 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:37:28,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:37:29,145 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:29,152 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:37:29,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:37:29,302 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:37:29,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29 WrapperNode [2020-09-24 22:37:29,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:37:29,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:37:29,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:37:29,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:37:29,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (1/1) ... [2020-09-24 22:37:29,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (1/1) ... [2020-09-24 22:37:29,334 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (1/1) ... [2020-09-24 22:37:29,335 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (1/1) ... [2020-09-24 22:37:29,352 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (1/1) ... [2020-09-24 22:37:29,366 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (1/1) ... [2020-09-24 22:37:29,368 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (1/1) ... [2020-09-24 22:37:29,373 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:37:29,373 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:37:29,373 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:37:29,373 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:37:29,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (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 22:37:29,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:37:29,450 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:37:29,450 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_float [2020-09-24 22:37:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_float [2020-09-24 22:37:29,451 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:37:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:37:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-09-24 22:37:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_float [2020-09-24 22:37:29,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:37:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 22:37:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:37:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:37:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 22:37:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:37:29,452 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_float [2020-09-24 22:37:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:37:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:37:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 22:37:29,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:37:30,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:37:30,056 INFO L295 CfgBuilder]: Removed 14 assume(true) statements. [2020-09-24 22:37:30,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:30 BoogieIcfgContainer [2020-09-24 22:37:30,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:37:30,066 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:37:30,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:37:30,070 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:37:30,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:37:28" (1/3) ... [2020-09-24 22:37:30,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33995329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:30, skipping insertion in model container [2020-09-24 22:37:30,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:37:29" (2/3) ... [2020-09-24 22:37:30,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33995329 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:37:30, skipping insertion in model container [2020-09-24 22:37:30,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:37:30" (3/3) ... [2020-09-24 22:37:30,074 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1131b.c [2020-09-24 22:37:30,085 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:37:30,096 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:37:30,116 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:37:30,149 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:37:30,149 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:37:30,149 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:37:30,150 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:37:30,150 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:37:30,150 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:37:30,150 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:37:30,150 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:37:30,177 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states. [2020-09-24 22:37:30,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-24 22:37:30,188 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:30,189 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] [2020-09-24 22:37:30,189 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:30,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:30,196 INFO L82 PathProgramCache]: Analyzing trace with hash -309473205, now seen corresponding path program 1 times [2020-09-24 22:37:30,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:30,205 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66786233] [2020-09-24 22:37:30,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:30,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:30,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-09-24 22:37:30,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:37:30,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 342 [2020-09-24 22:37:30,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:30,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 22:37:30,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:30,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:37:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:37:30,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 22:37:30,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:37:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:37:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:30,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:37:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:30,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 22:37:30,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:30,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:30,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 22:37:30,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:37:30,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:37:30,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:30,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 22:37:30,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:30,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:30,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-24 22:37:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:37:30,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:37:30,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:37:30,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:37:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:37:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:37:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:37:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:37:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 22:37:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:37:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:37:30,946 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 22:37:30,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66786233] [2020-09-24 22:37:30,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:37:30,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 22:37:30,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419477968] [2020-09-24 22:37:30,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 22:37:30,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:37:30,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 22:37:30,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 22:37:30,980 INFO L87 Difference]: Start difference. First operand 162 states. Second operand 4 states. [2020-09-24 22:37:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:37:31,418 INFO L93 Difference]: Finished difference Result 306 states and 369 transitions. [2020-09-24 22:37:31,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 22:37:31,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-24 22:37:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:37:31,436 INFO L225 Difference]: With dead ends: 306 [2020-09-24 22:37:31,437 INFO L226 Difference]: Without dead ends: 155 [2020-09-24 22:37:31,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:37:31,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-09-24 22:37:31,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2020-09-24 22:37:31,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155 states. [2020-09-24 22:37:31,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 170 transitions. [2020-09-24 22:37:31,508 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 170 transitions. Word has length 49 [2020-09-24 22:37:31,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:37:31,509 INFO L479 AbstractCegarLoop]: Abstraction has 155 states and 170 transitions. [2020-09-24 22:37:31,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 22:37:31,510 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 170 transitions. [2020-09-24 22:37:31,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-24 22:37:31,513 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:37:31,513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:37:31,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:37:31,514 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:37:31,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:37:31,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1032631156, now seen corresponding path program 1 times [2020-09-24 22:37:31,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:37:31,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828087372] [2020-09-24 22:37:31,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:37:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:37:31,579 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:37:31,579 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:37:31,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:37:31,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:37:31 BoogieIcfgContainer [2020-09-24 22:37:31,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:37:31,613 INFO L168 Benchmark]: Toolchain (without parser) took 2824.49 ms. Allocated memory was 139.5 MB in the beginning and 234.4 MB in the end (delta: 94.9 MB). Free memory was 102.8 MB in the beginning and 153.3 MB in the end (delta: -50.5 MB). Peak memory consumption was 44.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:31,614 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 22:37:31,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.09 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.1 MB in the beginning and 179.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:31,616 INFO L168 Benchmark]: Boogie Preprocessor took 68.64 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 176.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:31,617 INFO L168 Benchmark]: RCFGBuilder took 691.13 ms. Allocated memory is still 201.3 MB. Free memory was 176.3 MB in the beginning and 140.2 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:31,618 INFO L168 Benchmark]: TraceAbstraction took 1543.77 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 139.5 MB in the beginning and 153.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 19.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:37:31,622 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 511.09 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.1 MB in the beginning and 179.0 MB in the end (delta: -76.9 MB). Peak memory consumption was 23.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.64 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 176.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 691.13 ms. Allocated memory is still 201.3 MB. Free memory was 176.3 MB in the beginning and 140.2 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1543.77 ms. Allocated memory was 201.3 MB in the beginning and 234.4 MB in the end (delta: 33.0 MB). Free memory was 139.5 MB in the beginning and 153.3 MB in the end (delta: -13.8 MB). Peak memory consumption was 19.2 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 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, 162 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 174 SDtfs, 31 SDslu, 128 SDs, 0 SdLazy, 190 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=162occurred 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, 0.5s InterpolantComputationTime, 125 NumberOfCodeBlocks, 125 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 4464 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...