/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=0.1 --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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 02:59:35,170 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 02:59:35,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 02:59:35,213 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 02:59:35,214 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 02:59:35,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 02:59:35,228 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 02:59:35,231 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 02:59:35,232 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 02:59:35,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 02:59:35,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 02:59:35,235 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 02:59:35,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 02:59:35,238 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 02:59:35,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 02:59:35,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 02:59:35,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 02:59:35,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 02:59:35,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 02:59:35,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 02:59:35,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 02:59:35,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 02:59:35,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 02:59:35,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 02:59:35,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 02:59:35,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 02:59:35,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 02:59:35,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 02:59:35,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 02:59:35,272 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 02:59:35,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 02:59:35,273 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 02:59:35,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 02:59:35,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 02:59:35,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 02:59:35,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 02:59:35,277 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 02:59:35,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 02:59:35,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 02:59:35,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 02:59:35,280 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 02:59:35,281 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 02:59:35,333 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 02:59:35,333 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 02:59:35,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 02:59:35,337 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 02:59:35,337 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 02:59:35,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 02:59:35,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 02:59:35,338 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 02:59:35,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 02:59:35,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 02:59:35,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 02:59:35,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 02:59:35,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 02:59:35,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 02:59:35,341 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 02:59:35,341 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 02:59:35,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 02:59:35,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 02:59:35,342 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 02:59:35,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 02:59:35,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 02:59:35,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 02:59:35,343 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 02:59:35,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 02:59:35,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 02:59:35,344 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 02:59:35,344 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 02:59:35,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 02:59:35,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 02:59:35,344 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=0.1;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=0.1;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=0.1;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=0.1;log-additional-information=true; [2020-08-22 02:59:35,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 02:59:35,683 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 02:59:35,686 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 02:59:35,688 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 02:59:35,688 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 02:59:35,689 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 02:59:35,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3feaa33d9/4a07d56979324d47847f6ea4de15cb56/FLAG5fc932323 [2020-08-22 02:59:36,199 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 02:59:36,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 02:59:36,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3feaa33d9/4a07d56979324d47847f6ea4de15cb56/FLAG5fc932323 [2020-08-22 02:59:36,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3feaa33d9/4a07d56979324d47847f6ea4de15cb56 [2020-08-22 02:59:36,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 02:59:36,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 02:59:36,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:36,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 02:59:36,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 02:59:36,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ea4523a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:36, skipping insertion in model container [2020-08-22 02:59:36,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 02:59:36" (1/1) ... [2020-08-22 02:59:36,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 02:59:36,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 02:59:36,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:36,840 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 02:59:36,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 02:59:37,013 INFO L208 MainTranslator]: Completed translation [2020-08-22 02:59:37,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37 WrapperNode [2020-08-22 02:59:37,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 02:59:37,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 02:59:37,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 02:59:37,015 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 02:59:37,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (1/1) ... [2020-08-22 02:59:37,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (1/1) ... [2020-08-22 02:59:37,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (1/1) ... [2020-08-22 02:59:37,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (1/1) ... [2020-08-22 02:59:37,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (1/1) ... [2020-08-22 02:59:37,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (1/1) ... [2020-08-22 02:59:37,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (1/1) ... [2020-08-22 02:59:37,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 02:59:37,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 02:59:37,077 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 02:59:37,077 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 02:59:37,078 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (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 02:59:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 02:59:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 02:59:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 02:59:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 02:59:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 02:59:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 02:59:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 02:59:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 02:59:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 02:59:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 02:59:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 02:59:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 02:59:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 02:59:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 02:59:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 02:59:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 02:59:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 02:59:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 02:59:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 02:59:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 02:59:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 02:59:37,794 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 02:59:37,799 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 02:59:37,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:37 BoogieIcfgContainer [2020-08-22 02:59:37,807 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 02:59:37,810 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 02:59:37,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 02:59:37,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 02:59:37,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 02:59:36" (1/3) ... [2020-08-22 02:59:37,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a40e36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:37, skipping insertion in model container [2020-08-22 02:59:37,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 02:59:37" (2/3) ... [2020-08-22 02:59:37,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a40e36d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 02:59:37, skipping insertion in model container [2020-08-22 02:59:37,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 02:59:37" (3/3) ... [2020-08-22 02:59:37,819 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-22 02:59:37,830 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 02:59:37,841 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 02:59:37,857 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 02:59:37,880 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 02:59:37,881 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 02:59:37,881 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 02:59:37,881 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 02:59:37,881 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 02:59:37,881 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 02:59:37,882 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 02:59:37,882 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 02:59:37,901 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 02:59:37,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 02:59:37,908 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:37,910 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:59:37,910 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:37,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:37,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-22 02:59:37,923 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:37,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312688032] [2020-08-22 02:59:37,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:38,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 02:59:38,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:38,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 02:59:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 02:59:38,155 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 02:59:38,156 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312688032] [2020-08-22 02:59:38,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 02:59:38,158 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 02:59:38,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857883227] [2020-08-22 02:59:38,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 02:59:38,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 02:59:38,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 02:59:38,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 02:59:38,182 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-22 02:59:38,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 02:59:38,524 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-22 02:59:38,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 02:59:38,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 02:59:38,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 02:59:38,538 INFO L225 Difference]: With dead ends: 142 [2020-08-22 02:59:38,538 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 02:59:38,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 02:59:38,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 02:59:38,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 02:59:38,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 02:59:38,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-22 02:59:38,596 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-22 02:59:38,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 02:59:38,596 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-22 02:59:38,597 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 02:59:38,597 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-22 02:59:38,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 02:59:38,598 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 02:59:38,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 02:59:38,599 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 02:59:38,599 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 02:59:38,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 02:59:38,600 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-22 02:59:38,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 02:59:38,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167675999] [2020-08-22 02:59:38,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 02:59:38,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 02:59:38,664 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 02:59:38,664 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 02:59:38,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 02:59:38,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 02:59:38 BoogieIcfgContainer [2020-08-22 02:59:38,713 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 02:59:38,716 INFO L168 Benchmark]: Toolchain (without parser) took 2179.41 ms. Allocated memory was 150.5 MB in the beginning and 231.2 MB in the end (delta: 80.7 MB). Free memory was 106.2 MB in the beginning and 182.7 MB in the end (delta: -76.5 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,716 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 150.5 MB. Free memory was 125.0 MB in the beginning and 124.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:59:38,718 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.46 ms. Allocated memory was 150.5 MB in the beginning and 207.1 MB in the end (delta: 56.6 MB). Free memory was 105.8 MB in the beginning and 182.7 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,719 INFO L168 Benchmark]: Boogie Preprocessor took 62.53 ms. Allocated memory is still 207.1 MB. Free memory was 182.7 MB in the beginning and 179.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,720 INFO L168 Benchmark]: RCFGBuilder took 731.41 ms. Allocated memory is still 207.1 MB. Free memory was 179.6 MB in the beginning and 143.0 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. [2020-08-22 02:59:38,721 INFO L168 Benchmark]: TraceAbstraction took 902.49 ms. Allocated memory was 207.1 MB in the beginning and 231.2 MB in the end (delta: 24.1 MB). Free memory was 143.0 MB in the beginning and 182.7 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 02:59:38,725 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 150.5 MB. Free memory was 125.0 MB in the beginning and 124.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 476.46 ms. Allocated memory was 150.5 MB in the beginning and 207.1 MB in the end (delta: 56.6 MB). Free memory was 105.8 MB in the beginning and 182.7 MB in the end (delta: -76.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.53 ms. Allocated memory is still 207.1 MB. Free memory was 182.7 MB in the beginning and 179.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 731.41 ms. Allocated memory is still 207.1 MB. Free memory was 179.6 MB in the beginning and 143.0 MB in the end (delta: 36.6 MB). Peak memory consumption was 36.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 902.49 ms. Allocated memory was 207.1 MB in the beginning and 231.2 MB in the end (delta: 24.1 MB). Free memory was 143.0 MB in the beginning and 182.7 MB in the end (delta: -39.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L182] double x = 0.0; [L183] double y = __VERIFIER_nondet_double(); [L185] COND TRUE y < 0.0 || y > 0.0 [L187] CALL, EXPR fmod_double(x, y) [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); [L187] RET, EXPR fmod_double(x, y) [L187] double res = fmod_double(x, y); [L190] EXPR res == 0.0 && __signbit_double(res) == 0 [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) [L191] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 14 SDslu, 85 SDs, 0 SdLazy, 104 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 918 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...