/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -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-c90d42b [2020-09-24 14:53:51,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 14:53:51,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 14:53:51,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 14:53:51,181 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 14:53:51,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 14:53:51,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 14:53:51,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 14:53:51,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 14:53:51,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 14:53:51,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 14:53:51,202 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 14:53:51,202 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 14:53:51,205 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 14:53:51,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 14:53:51,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 14:53:51,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 14:53:51,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 14:53:51,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 14:53:51,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 14:53:51,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 14:53:51,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 14:53:51,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 14:53:51,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 14:53:51,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 14:53:51,255 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 14:53:51,256 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 14:53:51,257 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 14:53:51,259 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 [2020-09-24 14:53:51,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 14:53:51,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 14:53:51,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 14:53:51,306 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 14:53:51,307 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 14:53:51,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 14:53:51,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 14:53:51,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 14:53:51,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 14:53:51,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 14:53:51,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 14:53:51,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 14:53:51,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 14:53:51,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 14:53:51,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 14:53:51,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 14:53:51,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 14:53:51,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 14:53:51,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 14:53:51,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 14:53:51,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 14:53:51,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 14:53:51,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 14:53:51,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 14:53:51,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 14:53:51,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 14:53:51,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 14:53:51,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 14:53:51,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 14:53:51,313 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.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 14:53:51,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 14:53:51,908 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 14:53:51,914 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 14:53:51,916 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 14:53:51,916 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 14:53:51,918 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-24 14:53:52,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ccbdab0/b27669e9a9654328938dcdec1a1328f2/FLAG402ce20ca [2020-09-24 14:53:52,559 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 14:53:52,560 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-24 14:53:52,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ccbdab0/b27669e9a9654328938dcdec1a1328f2/FLAG402ce20ca [2020-09-24 14:53:52,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/28ccbdab0/b27669e9a9654328938dcdec1a1328f2 [2020-09-24 14:53:52,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 14:53:52,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 14:53:52,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:52,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 14:53:52,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 14:53:52,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:52" (1/1) ... [2020-09-24 14:53:52,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@675ad57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:52, skipping insertion in model container [2020-09-24 14:53:52,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 02:53:52" (1/1) ... [2020-09-24 14:53:52,912 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 14:53:52,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 14:53:53,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:53,235 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 14:53:53,427 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 14:53:53,454 INFO L208 MainTranslator]: Completed translation [2020-09-24 14:53:53,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53 WrapperNode [2020-09-24 14:53:53,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 14:53:53,455 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 14:53:53,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 14:53:53,456 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 14:53:53,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,525 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (1/1) ... [2020-09-24 14:53:53,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 14:53:53,531 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 14:53:53,531 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 14:53:53,531 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 14:53:53,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (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 [2020-09-24 14:53:53,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 14:53:53,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 14:53:53,611 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-24 14:53:53,612 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-24 14:53:53,612 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-24 14:53:53,612 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 14:53:53,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 14:53:53,612 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-24 14:53:53,612 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-24 14:53:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-24 14:53:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 14:53:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 14:53:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 14:53:53,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 14:53:53,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 14:53:53,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 14:53:53,614 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-24 14:53:53,614 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 14:53:53,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 14:53:53,615 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-24 14:53:53,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 14:53:54,304 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 14:53:54,305 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-24 14:53:54,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:54 BoogieIcfgContainer [2020-09-24 14:53:54,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 14:53:54,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 14:53:54,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 14:53:54,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 14:53:54,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 02:53:52" (1/3) ... [2020-09-24 14:53:54,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a6a6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:54, skipping insertion in model container [2020-09-24 14:53:54,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 02:53:53" (2/3) ... [2020-09-24 14:53:54,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27a6a6e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 02:53:54, skipping insertion in model container [2020-09-24 14:53:54,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 02:53:54" (3/3) ... [2020-09-24 14:53:54,322 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-24 14:53:54,334 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 14:53:54,346 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 14:53:54,369 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 14:53:54,403 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 14:53:54,404 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 14:53:54,404 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 14:53:54,404 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 14:53:54,404 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 14:53:54,405 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 14:53:54,405 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 14:53:54,405 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 14:53:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-24 14:53:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-24 14:53:54,447 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:54,448 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:54,449 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:54,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:54,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-24 14:53:54,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:54,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [342779547] [2020-09-24 14:53:54,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:54,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:54,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 14:53:54,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:54,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-24 14:53:54,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 14:53:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 14:53:54,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [342779547] [2020-09-24 14:53:54,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 14:53:54,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 14:53:54,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907444668] [2020-09-24 14:53:54,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 14:53:54,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 14:53:54,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 14:53:54,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 14:53:54,800 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-24 14:53:55,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 14:53:55,384 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-24 14:53:55,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 14:53:55,386 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-24 14:53:55,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 14:53:55,403 INFO L225 Difference]: With dead ends: 415 [2020-09-24 14:53:55,403 INFO L226 Difference]: Without dead ends: 213 [2020-09-24 14:53:55,410 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 [2020-09-24 14:53:55,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-24 14:53:55,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-24 14:53:55,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-24 14:53:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-24 14:53:55,481 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-24 14:53:55,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 14:53:55,482 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-24 14:53:55,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 14:53:55,482 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-24 14:53:55,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-24 14:53:55,486 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 14:53:55,486 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 14:53:55,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 14:53:55,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 14:53:55,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 14:53:55,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-24 14:53:55,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 14:53:55,488 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087472411] [2020-09-24 14:53:55,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 14:53:55,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 14:53:55,625 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 14:53:55,625 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 14:53:55,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 14:53:55,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 02:53:55 BoogieIcfgContainer [2020-09-24 14:53:55,654 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 14:53:55,657 INFO L168 Benchmark]: Toolchain (without parser) took 2766.29 ms. Allocated memory was 140.0 MB in the beginning and 235.4 MB in the end (delta: 95.4 MB). Free memory was 103.2 MB in the beginning and 145.9 MB in the end (delta: -42.8 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,658 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 14:53:55,659 INFO L168 Benchmark]: CACSL2BoogieTranslator took 561.38 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 102.5 MB in the beginning and 180.2 MB in the end (delta: -77.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,660 INFO L168 Benchmark]: Boogie Preprocessor took 75.26 ms. Allocated memory is still 205.0 MB. Free memory was 180.2 MB in the beginning and 177.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,661 INFO L168 Benchmark]: RCFGBuilder took 781.15 ms. Allocated memory is still 205.0 MB. Free memory was 177.4 MB in the beginning and 129.2 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,662 INFO L168 Benchmark]: TraceAbstraction took 1340.69 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 128.5 MB in the beginning and 145.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 14:53:55,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 561.38 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 102.5 MB in the beginning and 180.2 MB in the end (delta: -77.7 MB). Peak memory consumption was 23.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.26 ms. Allocated memory is still 205.0 MB. Free memory was 180.2 MB in the beginning and 177.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 781.15 ms. Allocated memory is still 205.0 MB. Free memory was 177.4 MB in the beginning and 129.2 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1340.69 ms. Allocated memory was 205.0 MB in the beginning and 235.4 MB in the end (delta: 30.4 MB). Free memory was 128.5 MB in the beginning and 145.9 MB in the end (delta: -17.4 MB). Peak memory consumption was 13.0 MB. 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 41, 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, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 45 SDslu, 184 SDs, 0 SdLazy, 266 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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=221occurred 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, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3510 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...