/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/double_req_bl_1131b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:17:18,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:17:18,044 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:17:18,085 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:17:18,086 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:17:18,094 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:17:18,096 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:17:18,100 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:17:18,102 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:17:18,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:17:18,106 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:17:18,107 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:17:18,107 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:17:18,110 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:17:18,112 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:17:18,114 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:17:18,116 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:17:18,117 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:17:18,118 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:17:18,126 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:17:18,128 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:17:18,129 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:17:18,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:17:18,131 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:17:18,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:17:18,143 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:17:18,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:17:18,144 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:17:18,153 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:17:18,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:17:18,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:17:18,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:17:18,157 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:17:18,158 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:17:18,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:17:18,159 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:17:18,160 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:17:18,160 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:17:18,161 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:17:18,161 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:17:18,162 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:17:18,163 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 19:17:18,203 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:17:18,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:17:18,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:17:18,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:17:18,206 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:17:18,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:17:18,207 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:17:18,207 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:17:18,207 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:17:18,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:17:18,208 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:17:18,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:17:18,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:17:18,209 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:17:18,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:17:18,210 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:17:18,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:17:18,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:17:18,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:17:18,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:17:18,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:17:18,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:17:18,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:17:18,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:17:18,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:17:18,212 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:17:18,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:17:18,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:17:18,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:17:18,212 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:17:18,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:17:18,687 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:17:18,692 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:17:18,693 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:17:18,694 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:17:18,695 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 19:17:18,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b2d2b09b/9b9660770dfa4ac98321a39565fffbcb/FLAGf267a92f4 [2020-09-24 19:17:19,343 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:17:19,344 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131b.c [2020-09-24 19:17:19,355 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b2d2b09b/9b9660770dfa4ac98321a39565fffbcb/FLAGf267a92f4 [2020-09-24 19:17:19,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1b2d2b09b/9b9660770dfa4ac98321a39565fffbcb [2020-09-24 19:17:19,630 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:17:19,634 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:17:19,635 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:19,636 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:17:19,640 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:17:19,642 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:19" (1/1) ... [2020-09-24 19:17:19,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53d96e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:19, skipping insertion in model container [2020-09-24 19:17:19,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:17:19" (1/1) ... [2020-09-24 19:17:19,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:17:19,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:17:19,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:19,998 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:17:20,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:17:20,169 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:17:20,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20 WrapperNode [2020-09-24 19:17:20,170 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:17:20,171 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:17:20,171 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:17:20,171 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:17:20,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,207 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,207 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,264 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (1/1) ... [2020-09-24 19:17:20,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:17:20,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:17:20,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:17:20,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:17:20,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (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 19:17:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:17:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:17:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-24 19:17:20,344 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-09-24 19:17:20,345 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:17:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:17:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 19:17:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-24 19:17:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 19:17:20,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 19:17:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 19:17:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 19:17:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 19:17:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 19:17:20,346 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-09-24 19:17:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:17:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:17:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 19:17:20,347 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:17:21,089 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:17:21,089 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-24 19:17:21,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:21 BoogieIcfgContainer [2020-09-24 19:17:21,102 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:17:21,104 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:17:21,104 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:17:21,108 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:17:21,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:17:19" (1/3) ... [2020-09-24 19:17:21,110 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54b40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:21, skipping insertion in model container [2020-09-24 19:17:21,110 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:17:20" (2/3) ... [2020-09-24 19:17:21,111 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e54b40a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:17:21, skipping insertion in model container [2020-09-24 19:17:21,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:17:21" (3/3) ... [2020-09-24 19:17:21,114 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131b.c [2020-09-24 19:17:21,125 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:17:21,136 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:17:21,159 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:17:21,193 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:17:21,194 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:17:21,194 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:17:21,194 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:17:21,194 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:17:21,194 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:17:21,195 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:17:21,195 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:17:21,233 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2020-09-24 19:17:21,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 19:17:21,250 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:21,251 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] [2020-09-24 19:17:21,251 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:21,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:21,259 INFO L82 PathProgramCache]: Analyzing trace with hash -1577177176, now seen corresponding path program 1 times [2020-09-24 19:17:21,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:21,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320506017] [2020-09-24 19:17:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:21,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:21,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:21,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:21,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:21,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:17:21,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:17:21,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 319 [2020-09-24 19:17:21,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:21,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-09-24 19:17:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 19:17:21,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:17:21,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:21,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:21,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 19:17:21,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:17:21,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 19:17:21,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:21,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:21,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:17:21,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:21,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-24 19:17:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:21,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:21,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:21,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 19:17:21,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:21,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 19:17:21,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:21,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-24 19:17:21,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:21,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:17:22,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-09-24 19:17:22,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:17:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:17:22,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:17:22,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-24 19:17:22,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 19:17:22,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:17:22,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:17:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:17:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 19:17:22,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:17:22,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:17:22,046 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 19:17:22,048 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320506017] [2020-09-24 19:17:22,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:17:22,051 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 19:17:22,052 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713480058] [2020-09-24 19:17:22,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 19:17:22,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:17:22,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 19:17:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 19:17:22,082 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 4 states. [2020-09-24 19:17:22,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:17:22,681 INFO L93 Difference]: Finished difference Result 414 states and 503 transitions. [2020-09-24 19:17:22,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 19:17:22,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-09-24 19:17:22,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:17:22,707 INFO L225 Difference]: With dead ends: 414 [2020-09-24 19:17:22,709 INFO L226 Difference]: Without dead ends: 209 [2020-09-24 19:17:22,721 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 19:17:22,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2020-09-24 19:17:22,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 209. [2020-09-24 19:17:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2020-09-24 19:17:22,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 235 transitions. [2020-09-24 19:17:22,828 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 235 transitions. Word has length 51 [2020-09-24 19:17:22,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:17:22,834 INFO L479 AbstractCegarLoop]: Abstraction has 209 states and 235 transitions. [2020-09-24 19:17:22,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 19:17:22,835 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 235 transitions. [2020-09-24 19:17:22,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-24 19:17:22,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:17:22,842 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:17:22,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:17:22,842 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:17:22,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:17:22,843 INFO L82 PathProgramCache]: Analyzing trace with hash -16125544, now seen corresponding path program 1 times [2020-09-24 19:17:22,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:17:22,844 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600276831] [2020-09-24 19:17:22,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:17:22,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 19:17:22,964 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 19:17:22,965 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 19:17:22,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:17:23,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 07:17:23 BoogieIcfgContainer [2020-09-24 19:17:23,004 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 19:17:23,008 INFO L168 Benchmark]: Toolchain (without parser) took 3374.59 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 102.5 MB in the beginning and 122.5 MB in the end (delta: -20.0 MB). Peak memory consumption was 76.9 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:23,009 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 19:17:23,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 535.32 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 178.6 MB in the end (delta: -76.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:23,011 INFO L168 Benchmark]: Boogie Preprocessor took 100.36 ms. Allocated memory is still 203.4 MB. Free memory was 178.6 MB in the beginning and 175.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:23,012 INFO L168 Benchmark]: RCFGBuilder took 830.22 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 129.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:23,013 INFO L168 Benchmark]: TraceAbstraction took 1899.58 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 128.7 MB in the beginning and 122.5 MB in the end (delta: 6.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2020-09-24 19:17:23,018 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 535.32 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 101.9 MB in the beginning and 178.6 MB in the end (delta: -76.8 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.36 ms. Allocated memory is still 203.4 MB. Free memory was 178.6 MB in the beginning and 175.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 830.22 ms. Allocated memory is still 203.4 MB. Free memory was 175.9 MB in the beginning and 129.4 MB in the end (delta: 46.5 MB). Peak memory consumption was 46.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1899.58 ms. Allocated memory was 203.4 MB in the beginning and 236.5 MB in the end (delta: 33.0 MB). Free memory was 128.7 MB in the beginning and 122.5 MB in the end (delta: 6.2 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 186]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someUnaryDOUBLEoperation at line 17, overapproximation of someBinaryArithmeticDOUBLEoperation at line 42, overapproximation of bitwiseAnd at line 38, overapproximation of someBinaryDOUBLEComparisonOperation at line 185, overapproximation of bitwiseXor at line 37. Possible FailurePath: [L15-L18] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L177] double y = -1.0 / 0.0; [L178] double x = __VERIFIER_nondet_double(); [L180] CALL isfinite_double(x) [L161] __int32_t hx; [L163] ieee_double_shape_type gh_u; [L164] gh_u.value = (x) [L165] EXPR gh_u.parts.msw [L165] (hx) = gh_u.parts.msw [L167] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L180] RET isfinite_double(x) [L180] COND TRUE isfinite_double(x) [L182] CALL, EXPR fmod_double(x, y) [L21] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L22] __uint32_t lx, ly, lz; [L25] ieee_double_shape_type ew_u; [L26] ew_u.value = (x) [L27] EXPR ew_u.parts.msw [L27] (hx) = ew_u.parts.msw [L28] EXPR ew_u.parts.lsw [L28] (lx) = ew_u.parts.lsw [L31] ieee_double_shape_type ew_u; [L32] ew_u.value = (y) [L33] EXPR ew_u.parts.msw [L33] (hy) = ew_u.parts.msw [L34] EXPR ew_u.parts.lsw [L34] (ly) = ew_u.parts.lsw [L36] sx = hx & 0x80000000 [L37] hx ^= sx [L38] hy &= 0x7fffffff [L40-L41] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L42] return (x * y) / (x * y); [L182] RET, EXPR fmod_double(x, y) [L182] double res = fmod_double(x, y); [L185] COND TRUE res != x [L186] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 216 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 239 SDtfs, 37 SDslu, 182 SDs, 0 SdLazy, 260 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=216occurred 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, 0.6s InterpolantComputationTime, 139 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4750 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...