/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:13:54,130 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:13:54,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:13:54,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:13:54,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:13:54,155 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:13:54,157 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:13:54,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:13:54,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:13:54,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:13:54,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:13:54,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:13:54,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:13:54,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:13:54,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:13:54,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:13:54,184 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:13:54,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:13:54,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:13:54,191 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:13:54,196 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:13:54,199 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:13:54,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:13:54,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:13:54,204 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:13:54,204 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:13:54,205 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:13:54,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:13:54,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:13:54,208 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2020-07-17 13:13:54,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:13:54,214 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:13:54,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:13:54,216 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:13:54,239 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:13:54,241 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:13:54,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:13:54,243 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:13:54,244 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:13:54,244 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:13:54,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:13:54,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:13:54,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:13:54,245 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:13:54,246 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:13:54,246 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:13:54,246 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:13:54,246 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:13:54,247 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:13:54,247 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:13:54,247 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:13:54,247 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:13:54,248 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:13:54,248 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:13:54,248 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:13:54,248 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:13:54,248 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:13:54,511 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:13:54,531 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:13:54,534 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:13:54,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:13:54,536 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:13:54,537 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-17 13:13:54,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aace3bc2d/5a6153336b37412dada0a6c0d637bb84/FLAG4e2752db4 [2020-07-17 13:13:55,112 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:13:55,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-07-17 13:13:55,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aace3bc2d/5a6153336b37412dada0a6c0d637bb84/FLAG4e2752db4 [2020-07-17 13:13:55,444 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aace3bc2d/5a6153336b37412dada0a6c0d637bb84 [2020-07-17 13:13:55,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:13:55,460 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:13:55,461 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:13:55,462 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:13:55,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:13:55,470 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c439a17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55, skipping insertion in model container [2020-07-17 13:13:55,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,488 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:13:55,514 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:13:55,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:13:55,827 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:13:55,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:13:55,911 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:13:55,912 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55 WrapperNode [2020-07-17 13:13:55,912 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:13:55,913 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:13:55,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:13:55,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:13:55,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,926 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,939 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... [2020-07-17 13:13:55,981 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:13:55,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:13:55,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:13:55,982 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:13:55,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 13:13:56,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:13:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:13:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-17 13:13:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-17 13:13:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-17 13:13:56,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:13:56,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:13:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-17 13:13:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-17 13:13:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-17 13:13:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 13:13:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 13:13:56,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:13:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:13:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 13:13:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:13:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-17 13:13:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:13:56,055 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:13:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-17 13:13:56,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:13:56,858 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:13:56,859 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-17 13:13:56,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:13:56 BoogieIcfgContainer [2020-07-17 13:13:56,866 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:13:56,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:13:56,868 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:13:56,871 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:13:56,872 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:13:55" (1/3) ... [2020-07-17 13:13:56,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdafde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:13:56, skipping insertion in model container [2020-07-17 13:13:56,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:13:55" (2/3) ... [2020-07-17 13:13:56,873 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdafde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:13:56, skipping insertion in model container [2020-07-17 13:13:56,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:13:56" (3/3) ... [2020-07-17 13:13:56,875 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-07-17 13:13:56,887 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:13:56,896 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:13:56,911 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:13:56,930 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:13:56,931 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:13:56,931 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:13:56,931 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:13:56,932 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:13:56,932 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:13:56,932 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:13:56,932 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:13:56,954 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-07-17 13:13:56,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-17 13:13:56,969 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:13:56,970 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] [2020-07-17 13:13:56,971 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:13:56,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:13:56,978 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-07-17 13:13:56,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:13:56,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1318222469] [2020-07-17 13:13:56,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:13:57,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:13:57,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:13:57,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:13:57,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:13:57,290 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:13:57,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1318222469] [2020-07-17 13:13:57,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:13:57,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:13:57,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099609982] [2020-07-17 13:13:57,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:13:57,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:13:57,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:13:57,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:13:57,320 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-07-17 13:13:57,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:13:57,856 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-07-17 13:13:57,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:13:57,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-07-17 13:13:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:13:57,872 INFO L225 Difference]: With dead ends: 415 [2020-07-17 13:13:57,872 INFO L226 Difference]: Without dead ends: 213 [2020-07-17 13:13:57,877 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:13:57,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-07-17 13:13:57,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-07-17 13:13:57,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-07-17 13:13:57,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-07-17 13:13:57,950 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-07-17 13:13:57,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:13:57,950 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-07-17 13:13:57,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:13:57,951 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-07-17 13:13:57,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-07-17 13:13:57,954 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:13:57,954 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] [2020-07-17 13:13:57,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:13:57,955 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:13:57,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:13:57,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-07-17 13:13:57,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:13:57,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126910844] [2020-07-17 13:13:57,956 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:13:58,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:13:58,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:13:58,229 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:13:58,230 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:13:58,230 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:13:58,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:13:58,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:13:58 BoogieIcfgContainer [2020-07-17 13:13:58,265 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:13:58,269 INFO L168 Benchmark]: Toolchain (without parser) took 2809.92 ms. Allocated memory was 144.7 MB in the beginning and 235.9 MB in the end (delta: 91.2 MB). Free memory was 100.5 MB in the beginning and 134.7 MB in the end (delta: -34.2 MB). Peak memory consumption was 57.0 MB. Max. memory is 7.1 GB. [2020-07-17 13:13:58,272 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 13:13:58,274 INFO L168 Benchmark]: CACSL2BoogieTranslator took 450.98 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 100.3 MB in the beginning and 178.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:13:58,274 INFO L168 Benchmark]: Boogie Preprocessor took 68.67 ms. Allocated memory is still 203.9 MB. Free memory was 178.9 MB in the beginning and 176.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:13:58,275 INFO L168 Benchmark]: RCFGBuilder took 884.34 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 127.8 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-07-17 13:13:58,276 INFO L168 Benchmark]: TraceAbstraction took 1397.28 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 127.8 MB in the beginning and 134.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-07-17 13:13:58,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.7 MB. Free memory was 120.1 MB in the beginning and 119.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 450.98 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 100.3 MB in the beginning and 178.9 MB in the end (delta: -78.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 68.67 ms. Allocated memory is still 203.9 MB. Free memory was 178.9 MB in the beginning and 176.3 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 884.34 ms. Allocated memory is still 203.9 MB. Free memory was 176.3 MB in the beginning and 127.8 MB in the end (delta: 48.5 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1397.28 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 127.8 MB in the beginning and 134.7 MB in the end (delta: -6.9 MB). Peak memory consumption was 25.1 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: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 25 GetRequests, 22 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: No data available, 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...