/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:31:46,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:31:46,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:31:46,209 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:31:46,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:31:46,210 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:31:46,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:31:46,214 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:31:46,216 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:31:46,217 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:31:46,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:31:46,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:31:46,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:31:46,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:31:46,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:31:46,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:31:46,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:31:46,224 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:31:46,226 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:31:46,228 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:31:46,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:31:46,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:31:46,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:31:46,233 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:31:46,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:31:46,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:31:46,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:31:46,239 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:31:46,239 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:31:46,240 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-08-19 03:31:46,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:31:46,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:31:46,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:31:46,248 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 [2020-08-19 03:31:46,272 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:31:46,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:31:46,274 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:31:46,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:31:46,274 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:31:46,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:31:46,275 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:31:46,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:31:46,275 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:31:46,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:31:46,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:31:46,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:31:46,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:31:46,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:31:46,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:31:46,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:31:46,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:31:46,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:31:46,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:31:46,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:31:46,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:31:46,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:31:46,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:31:46,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:31:46,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:31:46,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:31:46,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:31:46,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:31:46,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:31:46,279 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=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:31:46,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:31:46,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:31:46,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:31:46,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:31:46,606 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:31:46,607 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-19 03:31:46,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c363573da/6685894b0ba64133adcf6e4f2863dc57/FLAGc2c19322c [2020-08-19 03:31:47,185 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:31:47,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1210.c [2020-08-19 03:31:47,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c363573da/6685894b0ba64133adcf6e4f2863dc57/FLAGc2c19322c [2020-08-19 03:31:47,532 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c363573da/6685894b0ba64133adcf6e4f2863dc57 [2020-08-19 03:31:47,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:31:47,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:31:47,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:31:47,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:31:47,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:31:47,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@121db1c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47, skipping insertion in model container [2020-08-19 03:31:47,553 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:31:47,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:31:47,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:31:47,797 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:31:47,910 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:31:47,926 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:31:47,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47 WrapperNode [2020-08-19 03:31:47,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:31:47,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:31:47,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:31:47,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:31:47,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,966 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (1/1) ... [2020-08-19 03:31:47,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:31:47,981 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:31:47,981 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:31:47,981 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:31:47,982 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (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 [2020-08-19 03:31:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:31:48,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:31:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-19 03:31:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure modf_double [2020-08-19 03:31:48,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:31:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:31:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-19 03:31:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure modf_double [2020-08-19 03:31:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:31:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-19 03:31:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:31:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:31:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:31:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-19 03:31:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:31:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:31:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:31:48,567 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:31:48,568 INFO L295 CfgBuilder]: Removed 20 assume(true) statements. [2020-08-19 03:31:48,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:31:48 BoogieIcfgContainer [2020-08-19 03:31:48,573 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:31:48,574 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:31:48,574 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:31:48,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:31:48,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:31:47" (1/3) ... [2020-08-19 03:31:48,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b80ade5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:31:48, skipping insertion in model container [2020-08-19 03:31:48,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:31:47" (2/3) ... [2020-08-19 03:31:48,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b80ade5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:31:48, skipping insertion in model container [2020-08-19 03:31:48,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:31:48" (3/3) ... [2020-08-19 03:31:48,582 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1210.c [2020-08-19 03:31:48,593 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:31:48,601 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:31:48,614 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:31:48,635 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:31:48,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:31:48,636 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:31:48,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:31:48,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:31:48,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:31:48,637 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:31:48,637 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:31:48,656 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-08-19 03:31:48,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 03:31:48,663 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:31:48,664 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:31:48,665 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:31:48,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:31:48,670 INFO L82 PathProgramCache]: Analyzing trace with hash 204549601, now seen corresponding path program 1 times [2020-08-19 03:31:48,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:31:48,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107989194] [2020-08-19 03:31:48,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:31:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:31:48,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:31:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:31:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:48,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:31:48,930 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107989194] [2020-08-19 03:31:48,933 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:31:48,933 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-19 03:31:48,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261483667] [2020-08-19 03:31:48,940 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 03:31:48,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:31:48,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 03:31:48,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-19 03:31:48,959 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-08-19 03:31:49,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:31:49,290 INFO L93 Difference]: Finished difference Result 108 states and 162 transitions. [2020-08-19 03:31:49,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 03:31:49,294 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-19 03:31:49,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:31:49,313 INFO L225 Difference]: With dead ends: 108 [2020-08-19 03:31:49,313 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 03:31:49,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:31:49,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 03:31:49,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-19 03:31:49,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 03:31:49,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 60 transitions. [2020-08-19 03:31:49,413 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 60 transitions. Word has length 25 [2020-08-19 03:31:49,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:31:49,414 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 60 transitions. [2020-08-19 03:31:49,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 03:31:49,415 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 60 transitions. [2020-08-19 03:31:49,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 03:31:49,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:31:49,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:31:49,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:31:49,421 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:31:49,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:31:49,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1987482264, now seen corresponding path program 1 times [2020-08-19 03:31:49,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:31:49,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [900439392] [2020-08-19 03:31:49,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:31:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:49,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:31:49,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:49,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-19 03:31:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:49,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:31:49,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:31:49,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:31:49,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [900439392] [2020-08-19 03:31:49,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:31:49,595 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:31:49,595 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276356138] [2020-08-19 03:31:49,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:31:49,598 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:31:49,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:31:49,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:31:49,599 INFO L87 Difference]: Start difference. First operand 54 states and 60 transitions. Second operand 5 states. [2020-08-19 03:31:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:31:49,836 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2020-08-19 03:31:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:31:49,836 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-19 03:31:49,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:31:49,838 INFO L225 Difference]: With dead ends: 57 [2020-08-19 03:31:49,839 INFO L226 Difference]: Without dead ends: 54 [2020-08-19 03:31:49,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:31:49,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-19 03:31:49,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-08-19 03:31:49,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-08-19 03:31:49,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-08-19 03:31:49,851 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 27 [2020-08-19 03:31:49,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:31:49,857 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-08-19 03:31:49,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:31:49,857 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-08-19 03:31:49,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-19 03:31:49,858 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:31:49,859 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:31:49,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:31:49,859 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:31:49,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:31:49,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1590755806, now seen corresponding path program 1 times [2020-08-19 03:31:49,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:31:49,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1555597615] [2020-08-19 03:31:49,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:31:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 03:31:49,951 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 03:31:49,952 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 03:31:49,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:31:49,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:31:49 BoogieIcfgContainer [2020-08-19 03:31:49,990 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:31:49,993 INFO L168 Benchmark]: Toolchain (without parser) took 2447.56 ms. Allocated memory was 136.3 MB in the beginning and 226.5 MB in the end (delta: 90.2 MB). Free memory was 98.4 MB in the beginning and 164.7 MB in the end (delta: -66.3 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:49,994 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:31:49,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.02 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 98.2 MB in the beginning and 175.7 MB in the end (delta: -77.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:49,996 INFO L168 Benchmark]: Boogie Preprocessor took 53.54 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 172.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:49,997 INFO L168 Benchmark]: RCFGBuilder took 591.65 ms. Allocated memory is still 199.2 MB. Free memory was 172.9 MB in the beginning and 141.2 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:49,998 INFO L168 Benchmark]: TraceAbstraction took 1416.17 ms. Allocated memory was 199.2 MB in the beginning and 226.5 MB in the end (delta: 27.3 MB). Free memory was 141.2 MB in the beginning and 164.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:31:50,002 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 136.3 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.02 ms. Allocated memory was 136.3 MB in the beginning and 199.2 MB in the end (delta: 62.9 MB). Free memory was 98.2 MB in the beginning and 175.7 MB in the end (delta: -77.5 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.54 ms. Allocated memory is still 199.2 MB. Free memory was 175.7 MB in the beginning and 172.9 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 591.65 ms. Allocated memory is still 199.2 MB. Free memory was 172.9 MB in the beginning and 141.2 MB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1416.17 ms. Allocated memory was 199.2 MB in the beginning and 226.5 MB in the end (delta: 27.3 MB). Free memory was 141.2 MB in the beginning and 164.7 MB in the end (delta: -23.6 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 122]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 15, overapproximation of someBinaryArithmeticDOUBLEoperation at line 116, overapproximation of bitwiseAnd at line 33. Possible FailurePath: [L17] static const double one_modf = 1.0; [L116] double x = 0.0 / 0.0; [L117] double iptr; [L118] CALL, EXPR modf_double(x, &iptr) [L20] __int32_t i0, i1, j0; [L21] __uint32_t i; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L29] COND TRUE j0 < 20 [L30] COND TRUE j0 < 0 [L32] ieee_double_shape_type iw_u; [L33] iw_u.parts.msw = (i0 & 0x80000000) [L34] iw_u.parts.lsw = (0) [L35] EXPR iw_u.value [L35] (*iptr) = iw_u.value [L37] return x; [L118] RET, EXPR modf_double(x, &iptr) [L118] double res = modf_double(x, &iptr); [L121] EXPR \read(iptr) [L121] CALL, EXPR isnan_double(iptr) [L15] return x != x; [L121] RET, EXPR isnan_double(iptr) [L121] isnan_double(iptr) && !isnan_double(res) [L121] CALL, EXPR isnan_double(res) [L15] return x != x; [L121] RET, EXPR isnan_double(res) [L121] isnan_double(iptr) && !isnan_double(res) [L121] COND TRUE isnan_double(iptr) && !isnan_double(res) [L122] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 58 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 68 SDslu, 35 SDs, 0 SdLazy, 188 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2478 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...