/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=5 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST -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 0.1.25-5644d1e-m [2020-08-18 20:15:17,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 20:15:17,077 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 20:15:17,120 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 20:15:17,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 20:15:17,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 20:15:17,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 20:15:17,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 20:15:17,139 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 20:15:17,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 20:15:17,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 20:15:17,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 20:15:17,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 20:15:17,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 20:15:17,150 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 20:15:17,152 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 20:15:17,154 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 20:15:17,156 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 20:15:17,158 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 20:15:17,164 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 20:15:17,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 20:15:17,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 20:15:17,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 20:15:17,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 20:15:17,176 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 20:15:17,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 20:15:17,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 20:15:17,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 20:15:17,181 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 20:15:17,182 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 20:15:17,182 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 20:15:17,184 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 20:15:17,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 20:15:17,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 20:15:17,186 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 20:15:17,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 20:15:17,187 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 20:15:17,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 20:15:17,188 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 20:15:17,189 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 20:15:17,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 20:15:17,191 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 [2020-08-18 20:15:17,237 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 20:15:17,238 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 20:15:17,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 20:15:17,240 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 20:15:17,240 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 20:15:17,240 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 20:15:17,240 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 20:15:17,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 20:15:17,241 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 20:15:17,241 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 20:15:17,242 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 20:15:17,242 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 20:15:17,242 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 20:15:17,243 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 20:15:17,243 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 20:15:17,243 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 20:15:17,243 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 20:15:17,244 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 20:15:17,244 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 20:15:17,244 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 20:15:17,244 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 20:15:17,244 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 20:15:17,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 20:15:17,245 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 20:15:17,245 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 20:15:17,245 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 20:15:17,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 20:15:17,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 20:15:17,246 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 20:15:17,246 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=5;interpolation-heuristic=SHALLOWEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SHALLOWEST; [2020-08-18 20:15:17,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 20:15:17,546 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 20:15:17,552 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 20:15:17,554 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 20:15:17,555 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 20:15:17,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 20:15:17,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a85fcd4e/10a9fb6b9b03486dbc0df578406c9d0d/FLAG134d3ec6a [2020-08-18 20:15:18,075 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 20:15:18,076 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-08-18 20:15:18,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a85fcd4e/10a9fb6b9b03486dbc0df578406c9d0d/FLAG134d3ec6a [2020-08-18 20:15:18,097 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a85fcd4e/10a9fb6b9b03486dbc0df578406c9d0d [2020-08-18 20:15:18,105 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 20:15:18,107 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 20:15:18,108 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:18,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 20:15:18,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 20:15:18,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,116 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6870177e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18, skipping insertion in model container [2020-08-18 20:15:18,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,124 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 20:15:18,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 20:15:18,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:18,452 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 20:15:18,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 20:15:18,681 INFO L208 MainTranslator]: Completed translation [2020-08-18 20:15:18,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18 WrapperNode [2020-08-18 20:15:18,682 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 20:15:18,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 20:15:18,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 20:15:18,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 20:15:18,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,712 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,712 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,734 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,744 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,748 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (1/1) ... [2020-08-18 20:15:18,752 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 20:15:18,753 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 20:15:18,753 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 20:15:18,753 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 20:15:18,754 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (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 [2020-08-18 20:15:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 20:15:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 20:15:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 20:15:18,822 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 20:15:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-18 20:15:18,823 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 20:15:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 20:15:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 20:15:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 20:15:18,823 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 20:15:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 20:15:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 20:15:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 20:15:18,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 20:15:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 20:15:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 20:15:18,825 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-18 20:15:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 20:15:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 20:15:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 20:15:18,826 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 20:15:19,488 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 20:15:19,489 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 20:15:19,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:19 BoogieIcfgContainer [2020-08-18 20:15:19,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 20:15:19,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 20:15:19,503 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 20:15:19,506 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 20:15:19,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 08:15:18" (1/3) ... [2020-08-18 20:15:19,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c9cdfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:19, skipping insertion in model container [2020-08-18 20:15:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 08:15:18" (2/3) ... [2020-08-18 20:15:19,508 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67c9cdfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 08:15:19, skipping insertion in model container [2020-08-18 20:15:19,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 08:15:19" (3/3) ... [2020-08-18 20:15:19,510 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-08-18 20:15:19,521 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 20:15:19,532 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 20:15:19,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 20:15:19,579 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 20:15:19,580 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 20:15:19,580 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 20:15:19,580 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 20:15:19,580 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 20:15:19,580 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 20:15:19,581 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 20:15:19,581 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 20:15:19,611 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-18 20:15:19,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 20:15:19,620 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:15:19,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 20:15:19,621 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:15:19,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:15:19,630 INFO L82 PathProgramCache]: Analyzing trace with hash 1999170223, now seen corresponding path program 1 times [2020-08-18 20:15:19,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:15:19,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86067453] [2020-08-18 20:15:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:15:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:19,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 20:15:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:19,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 20:15:19,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 20:15:19,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 20:15:19,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86067453] [2020-08-18 20:15:19,903 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 20:15:19,903 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 20:15:19,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140313409] [2020-08-18 20:15:19,909 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 20:15:19,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 20:15:19,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 20:15:19,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 20:15:19,927 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 4 states. [2020-08-18 20:15:20,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 20:15:20,261 INFO L93 Difference]: Finished difference Result 142 states and 232 transitions. [2020-08-18 20:15:20,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 20:15:20,263 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-08-18 20:15:20,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 20:15:20,274 INFO L225 Difference]: With dead ends: 142 [2020-08-18 20:15:20,274 INFO L226 Difference]: Without dead ends: 69 [2020-08-18 20:15:20,278 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 [2020-08-18 20:15:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-08-18 20:15:20,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-08-18 20:15:20,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-18 20:15:20,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 96 transitions. [2020-08-18 20:15:20,327 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 96 transitions. Word has length 19 [2020-08-18 20:15:20,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 20:15:20,327 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 96 transitions. [2020-08-18 20:15:20,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 20:15:20,328 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 96 transitions. [2020-08-18 20:15:20,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-18 20:15:20,329 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 20:15:20,329 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] [2020-08-18 20:15:20,330 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 20:15:20,330 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 20:15:20,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 20:15:20,331 INFO L82 PathProgramCache]: Analyzing trace with hash -656970196, now seen corresponding path program 1 times [2020-08-18 20:15:20,331 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 20:15:20,331 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550339458] [2020-08-18 20:15:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 20:15:20,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 20:15:20,409 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 20:15:20,409 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 20:15:20,414 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 20:15:20,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 08:15:20 BoogieIcfgContainer [2020-08-18 20:15:20,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 20:15:20,435 INFO L168 Benchmark]: Toolchain (without parser) took 2327.77 ms. Allocated memory was 141.0 MB in the beginning and 232.3 MB in the end (delta: 91.2 MB). Free memory was 102.8 MB in the beginning and 188.3 MB in the end (delta: -85.5 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:20,436 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 20:15:20,437 INFO L168 Benchmark]: CACSL2BoogieTranslator took 574.40 ms. Allocated memory was 141.0 MB in the beginning and 207.6 MB in the end (delta: 66.6 MB). Free memory was 102.3 MB in the beginning and 182.8 MB in the end (delta: -80.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:20,438 INFO L168 Benchmark]: Boogie Preprocessor took 69.81 ms. Allocated memory is still 207.6 MB. Free memory was 182.8 MB in the beginning and 179.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:20,439 INFO L168 Benchmark]: RCFGBuilder took 746.98 ms. Allocated memory is still 207.6 MB. Free memory was 179.6 MB in the beginning and 143.5 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. [2020-08-18 20:15:20,440 INFO L168 Benchmark]: TraceAbstraction took 930.45 ms. Allocated memory was 207.6 MB in the beginning and 232.3 MB in the end (delta: 24.6 MB). Free memory was 142.9 MB in the beginning and 188.3 MB in the end (delta: -45.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 20:15:20,444 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 574.40 ms. Allocated memory was 141.0 MB in the beginning and 207.6 MB in the end (delta: 66.6 MB). Free memory was 102.3 MB in the beginning and 182.8 MB in the end (delta: -80.4 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.81 ms. Allocated memory is still 207.6 MB. Free memory was 182.8 MB in the beginning and 179.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 746.98 ms. Allocated memory is still 207.6 MB. Free memory was 179.6 MB in the beginning and 143.5 MB in the end (delta: 36.0 MB). Peak memory consumption was 36.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 930.45 ms. Allocated memory was 207.6 MB in the beginning and 232.3 MB in the end (delta: 24.6 MB). Free memory was 142.9 MB in the beginning and 188.3 MB in the end (delta: -45.4 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, 0.1s 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...