/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 16:13:50,537 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 16:13:50,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 16:13:50,584 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 16:13:50,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 16:13:50,596 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 16:13:50,598 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 16:13:50,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 16:13:50,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 16:13:50,608 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 16:13:50,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 16:13:50,612 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 16:13:50,612 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 16:13:50,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 16:13:50,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 16:13:50,619 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 16:13:50,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 16:13:50,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 16:13:50,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 16:13:50,631 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 16:13:50,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 16:13:50,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 16:13:50,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 16:13:50,639 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 16:13:50,643 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 16:13:50,644 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 16:13:50,644 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 16:13:50,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 16:13:50,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 16:13:50,650 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 16:13:50,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 16:13:50,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 16:13:50,652 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 16:13:50,652 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 16:13:50,654 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 16:13:50,654 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 16:13:50,654 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 16:13:50,655 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 16:13:50,655 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 16:13:50,656 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 16:13:50,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 16:13:50,659 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 16:13:50,716 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 16:13:50,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 16:13:50,720 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 16:13:50,721 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 16:13:50,721 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 16:13:50,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 16:13:50,722 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 16:13:50,722 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 16:13:50,722 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 16:13:50,722 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 16:13:50,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 16:13:50,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 16:13:50,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 16:13:50,724 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 16:13:50,724 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 16:13:50,725 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 16:13:50,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 16:13:50,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 16:13:50,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 16:13:50,725 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 16:13:50,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 16:13:50,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 16:13:50,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 16:13:50,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 16:13:50,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 16:13:50,727 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 16:13:50,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 16:13:50,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 16:13:50,727 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 16:13:50,727 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 [2020-08-18 16:13:51,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 16:13:51,025 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 16:13:51,032 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 16:13:51,034 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 16:13:51,034 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 16:13:51,035 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 16:13:51,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acb77ea8/5744dcb8b914408781061c09b4ac0b65/FLAGdcc8b3a13 [2020-08-18 16:13:51,545 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 16:13:51,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-08-18 16:13:51,559 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acb77ea8/5744dcb8b914408781061c09b4ac0b65/FLAGdcc8b3a13 [2020-08-18 16:13:51,945 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1acb77ea8/5744dcb8b914408781061c09b4ac0b65 [2020-08-18 16:13:51,953 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 16:13:51,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 16:13:51,956 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 16:13:51,956 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 16:13:51,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 16:13:51,960 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:13:51" (1/1) ... [2020-08-18 16:13:51,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bcf94a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:51, skipping insertion in model container [2020-08-18 16:13:51,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 04:13:51" (1/1) ... [2020-08-18 16:13:51,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 16:13:52,000 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 16:13:52,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:13:52,225 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 16:13:52,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 16:13:52,422 INFO L208 MainTranslator]: Completed translation [2020-08-18 16:13:52,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52 WrapperNode [2020-08-18 16:13:52,422 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 16:13:52,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 16:13:52,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 16:13:52,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 16:13:52,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (1/1) ... [2020-08-18 16:13:52,435 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (1/1) ... [2020-08-18 16:13:52,449 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (1/1) ... [2020-08-18 16:13:52,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (1/1) ... [2020-08-18 16:13:52,468 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (1/1) ... [2020-08-18 16:13:52,479 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (1/1) ... [2020-08-18 16:13:52,483 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (1/1) ... [2020-08-18 16:13:52,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 16:13:52,488 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 16:13:52,488 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 16:13:52,488 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 16:13:52,491 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (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 16:13:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 16:13:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 16:13:52,557 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-18 16:13:52,558 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-08-18 16:13:52,558 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-08-18 16:13:52,558 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 16:13:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 16:13:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-18 16:13:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-18 16:13:52,559 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-08-18 16:13:52,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 16:13:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-18 16:13:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 16:13:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 16:13:52,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-18 16:13:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 16:13:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-08-18 16:13:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 16:13:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 16:13:52,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-08-18 16:13:52,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 16:13:53,196 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 16:13:53,197 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-08-18 16:13:53,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:13:53 BoogieIcfgContainer [2020-08-18 16:13:53,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 16:13:53,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 16:13:53,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 16:13:53,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 16:13:53,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 04:13:51" (1/3) ... [2020-08-18 16:13:53,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d248bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:13:53, skipping insertion in model container [2020-08-18 16:13:53,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 04:13:52" (2/3) ... [2020-08-18 16:13:53,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d248bde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 04:13:53, skipping insertion in model container [2020-08-18 16:13:53,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 04:13:53" (3/3) ... [2020-08-18 16:13:53,211 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-08-18 16:13:53,222 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 16:13:53,230 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 16:13:53,242 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 16:13:53,264 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 16:13:53,264 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 16:13:53,265 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 16:13:53,265 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 16:13:53,265 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 16:13:53,265 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 16:13:53,265 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 16:13:53,266 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 16:13:53,286 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-08-18 16:13:53,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-18 16:13:53,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:53,294 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] [2020-08-18 16:13:53,295 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:53,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:53,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-08-18 16:13:53,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:53,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168812865] [2020-08-18 16:13:53,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:53,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:53,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 16:13:53,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:53,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-18 16:13:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:53,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-18 16:13:53,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 16:13:53,573 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 16:13:53,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168812865] [2020-08-18 16:13:53,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 16:13:53,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-18 16:13:53,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787660175] [2020-08-18 16:13:53,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-18 16:13:53,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 16:13:53,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-18 16:13:53,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-18 16:13:53,627 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 4 states. [2020-08-18 16:13:53,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 16:13:53,972 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-08-18 16:13:53,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 16:13:53,974 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-08-18 16:13:53,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 16:13:53,987 INFO L225 Difference]: With dead ends: 138 [2020-08-18 16:13:53,987 INFO L226 Difference]: Without dead ends: 68 [2020-08-18 16:13:53,991 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-18 16:13:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-08-18 16:13:54,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-08-18 16:13:54,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-08-18 16:13:54,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-08-18 16:13:54,063 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-08-18 16:13:54,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 16:13:54,063 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-08-18 16:13:54,063 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-18 16:13:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-08-18 16:13:54,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-18 16:13:54,065 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 16:13:54,065 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 16:13:54,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 16:13:54,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 16:13:54,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 16:13:54,066 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-08-18 16:13:54,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 16:13:54,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1513227236] [2020-08-18 16:13:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 16:13:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 16:13:54,171 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 16:13:54,171 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 16:13:54,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 16:13:54,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 04:13:54 BoogieIcfgContainer [2020-08-18 16:13:54,196 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 16:13:54,200 INFO L168 Benchmark]: Toolchain (without parser) took 2243.60 ms. Allocated memory was 141.0 MB in the beginning and 233.8 MB in the end (delta: 92.8 MB). Free memory was 102.0 MB in the beginning and 187.9 MB in the end (delta: -85.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:54,200 INFO L168 Benchmark]: CDTParser took 0.14 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:13:54,202 INFO L168 Benchmark]: CACSL2BoogieTranslator took 466.91 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 179.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:54,202 INFO L168 Benchmark]: Boogie Preprocessor took 64.69 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 176.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:54,203 INFO L168 Benchmark]: RCFGBuilder took 714.10 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 140.5 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-08-18 16:13:54,204 INFO L168 Benchmark]: TraceAbstraction took 992.85 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 139.9 MB in the beginning and 187.9 MB in the end (delta: -48.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-18 16:13:54,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 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: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 466.91 ms. Allocated memory was 141.0 MB in the beginning and 204.5 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 179.8 MB in the end (delta: -78.0 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 64.69 ms. Allocated memory is still 204.5 MB. Free memory was 179.8 MB in the beginning and 176.6 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 714.10 ms. Allocated memory is still 204.5 MB. Free memory was 176.6 MB in the beginning and 140.5 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 992.85 ms. Allocated memory was 204.5 MB in the beginning and 233.8 MB in the end (delta: 29.4 MB). Free memory was 139.9 MB in the beginning and 187.9 MB in the end (delta: -48.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: 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 someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) [L164] __int32_t hx; [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); [L183] RET isfinite_double(x) [L183] COND TRUE isfinite_double(x) [L185] 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); [L185] RET, EXPR fmod_double(x, y) [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x [L189] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 6 SDslu, 87 SDs, 0 SdLazy, 102 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred 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, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1656 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...