/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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 01:22:13,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:22:13,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:22:13,365 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:22:13,365 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:22:13,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:22:13,368 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:22:13,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:22:13,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:22:13,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:22:13,373 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:22:13,374 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:22:13,374 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:22:13,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:22:13,377 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:22:13,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:22:13,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:22:13,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:22:13,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:22:13,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:22:13,385 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:22:13,386 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:22:13,388 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:22:13,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:22:13,391 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:22:13,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:22:13,392 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:22:13,393 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:22:13,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:22:13,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:22:13,394 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:22:13,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:22:13,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:22:13,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:22:13,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:22:13,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:22:13,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:22:13,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:22:13,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:22:13,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:22:13,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:22:13,402 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 01:22:13,424 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:22:13,425 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:22:13,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:22:13,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:22:13,427 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:22:13,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:22:13,428 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:22:13,428 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:22:13,429 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:22:13,429 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:22:13,429 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:22:13,429 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:22:13,429 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:22:13,430 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:22:13,430 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:22:13,430 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:22:13,430 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:22:13,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:22:13,431 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:22:13,431 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:22:13,431 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:22:13,431 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:22:13,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:22:13,432 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:22:13,432 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:22:13,432 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:22:13,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:22:13,433 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:22:13,433 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:22:13,433 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:22:13,783 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:22:13,805 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:22:13,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:22:13,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:22:13,813 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:22:13,814 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 01:22:13,877 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef0b05eae/d99fc19ba4f4472091b09d8b0843296c/FLAGdcdbcdb10 [2020-08-22 01:22:14,391 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:22:14,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-22 01:22:14,403 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef0b05eae/d99fc19ba4f4472091b09d8b0843296c/FLAGdcdbcdb10 [2020-08-22 01:22:14,672 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef0b05eae/d99fc19ba4f4472091b09d8b0843296c [2020-08-22 01:22:14,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:22:14,682 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:22:14,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:14,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:22:14,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:22:14,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:14" (1/1) ... [2020-08-22 01:22:14,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54752615 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:14, skipping insertion in model container [2020-08-22 01:22:14,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:22:14" (1/1) ... [2020-08-22 01:22:14,699 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:22:14,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:22:15,008 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:15,014 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:22:15,165 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:22:15,190 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:22:15,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15 WrapperNode [2020-08-22 01:22:15,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:22:15,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:22:15,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:22:15,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:22:15,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,218 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,218 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (1/1) ... [2020-08-22 01:22:15,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:22:15,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:22:15,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:22:15,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:22:15,277 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (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 01:22:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:22:15,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:22:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 01:22:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-22 01:22:15,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 01:22:15,359 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:22:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:22:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 01:22:15,359 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 01:22:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-22 01:22:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:22:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 01:22:15,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:22:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:22:15,362 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 01:22:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:22:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 01:22:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:22:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:22:15,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-22 01:22:15,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:22:16,031 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:22:16,031 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-22 01:22:16,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:16 BoogieIcfgContainer [2020-08-22 01:22:16,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:22:16,038 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:22:16,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:22:16,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:22:16,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:22:14" (1/3) ... [2020-08-22 01:22:16,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ae2e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:16, skipping insertion in model container [2020-08-22 01:22:16,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:22:15" (2/3) ... [2020-08-22 01:22:16,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51ae2e28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:22:16, skipping insertion in model container [2020-08-22 01:22:16,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:22:16" (3/3) ... [2020-08-22 01:22:16,046 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-22 01:22:16,057 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:22:16,065 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:22:16,081 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:22:16,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:22:16,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:22:16,110 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:22:16,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:22:16,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:22:16,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:22:16,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:22:16,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:22:16,133 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 01:22:16,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-22 01:22:16,141 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:16,142 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 01:22:16,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:16,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:16,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-22 01:22:16,156 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:16,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138553811] [2020-08-22 01:22:16,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:16,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:22:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:22:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:22:16,445 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 01:22:16,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138553811] [2020-08-22 01:22:16,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:22:16,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 01:22:16,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845158376] [2020-08-22 01:22:16,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 01:22:16,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:22:16,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 01:22:16,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 01:22:16,473 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-22 01:22:16,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:22:16,809 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-22 01:22:16,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:22:16,811 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-22 01:22:16,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:22:16,822 INFO L225 Difference]: With dead ends: 142 [2020-08-22 01:22:16,822 INFO L226 Difference]: Without dead ends: 69 [2020-08-22 01:22:16,826 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 01:22:16,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-22 01:22:16,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-22 01:22:16,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 01:22:16,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-22 01:22:16,870 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-22 01:22:16,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:22:16,871 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-22 01:22:16,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 01:22:16,871 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-22 01:22:16,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-22 01:22:16,873 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:22:16,873 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 01:22:16,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:22:16,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:22:16,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:22:16,874 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-22 01:22:16,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:22:16,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129480010] [2020-08-22 01:22:16,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:22:16,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 01:22:16,936 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 01:22:16,937 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:22:16,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:22:16,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:22:16 BoogieIcfgContainer [2020-08-22 01:22:16,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:22:16,964 INFO L168 Benchmark]: Toolchain (without parser) took 2280.51 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 102.3 MB in the beginning and 194.8 MB in the end (delta: -92.5 MB). Peak memory consumption was 4.0 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:16,965 INFO L168 Benchmark]: CDTParser took 0.75 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. [2020-08-22 01:22:16,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 507.58 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 178.1 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:16,967 INFO L168 Benchmark]: Boogie Preprocessor took 83.51 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:16,968 INFO L168 Benchmark]: RCFGBuilder took 761.13 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 138.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-08-22 01:22:16,969 INFO L168 Benchmark]: TraceAbstraction took 922.90 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 138.0 MB in the beginning and 194.8 MB in the end (delta: -56.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 01:22:16,973 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.75 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 507.58 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.1 MB in the beginning and 178.1 MB in the end (delta: -76.0 MB). Peak memory consumption was 23.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 83.51 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 761.13 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 138.7 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 922.90 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 138.0 MB in the beginning and 194.8 MB in the end (delta: -56.8 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: 0.8s, 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...