/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic BIGGEST_EQUIVALENCE_CLASS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -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-d623d84 [2020-07-21 22:02:06,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:02:06,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:02:06,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:02:06,229 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:02:06,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:02:06,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:02:06,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:02:06,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:02:06,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:02:06,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:02:06,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:02:06,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:02:06,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:02:06,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:02:06,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:02:06,259 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:02:06,262 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:02:06,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:02:06,267 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:02:06,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:02:06,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:02:06,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:02:06,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:02:06,276 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 22:02:06,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 22:02:06,277 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 22:02:06,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 22:02:06,278 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 22:02:06,279 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 22:02:06,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 22:02:06,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 22:02:06,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 22:02:06,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 22:02:06,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 22:02:06,282 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 22:02:06,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 22:02:06,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 22:02:06,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:02:06,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:02:06,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:02:06,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 22:02:06,299 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:02:06,299 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:02:06,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:02:06,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:02:06,300 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:02:06,301 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:02:06,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:02:06,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:02:06,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:02:06,301 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:02:06,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:02:06,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:02:06,302 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:02:06,302 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:02:06,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:02:06,303 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:02:06,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:02:06,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:02:06,303 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:02:06,303 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:02:06,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:02:06,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:02:06,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:02:06,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:02:06,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:02:06,305 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:02:06,305 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:06,305 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:02:06,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:02:06,305 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 -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> BIGGEST_EQUIVALENCE_CLASS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-21 22:02:06,593 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:02:06,605 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:02:06,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:02:06,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:02:06,610 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:02:06,611 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 22:02:06,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4084f7476/0825f46a78c0443e925a1d0e7e8835b8/FLAGc3aa1cf4c [2020-07-21 22:02:07,146 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:02:07,147 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-21 22:02:07,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4084f7476/0825f46a78c0443e925a1d0e7e8835b8/FLAGc3aa1cf4c [2020-07-21 22:02:07,551 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4084f7476/0825f46a78c0443e925a1d0e7e8835b8 [2020-07-21 22:02:07,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:02:07,564 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:02:07,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:07,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:02:07,569 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:02:07,570 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:07" (1/1) ... [2020-07-21 22:02:07,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3de3d3db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:07, skipping insertion in model container [2020-07-21 22:02:07,573 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:02:07" (1/1) ... [2020-07-21 22:02:07,580 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:02:07,610 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:02:07,948 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:07,953 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:02:08,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:02:08,038 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:02:08,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08 WrapperNode [2020-07-21 22:02:08,039 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:02:08,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:02:08,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:02:08,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:02:08,049 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (1/1) ... [2020-07-21 22:02:08,050 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (1/1) ... [2020-07-21 22:02:08,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (1/1) ... [2020-07-21 22:02:08,062 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (1/1) ... [2020-07-21 22:02:08,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (1/1) ... [2020-07-21 22:02:08,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (1/1) ... [2020-07-21 22:02:08,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (1/1) ... [2020-07-21 22:02:08,098 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:02:08,099 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:02:08,099 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:02:08,099 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:02:08,100 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (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 [2020-07-21 22:02:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:02:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:02:08,164 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 22:02:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-21 22:02:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 22:02:08,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:02:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:02:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 22:02:08,165 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 22:02:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-21 22:02:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:02:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:02:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:02:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:02:08,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 22:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-21 22:02:08,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:08,691 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:08,691 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-21 22:02:08,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:08 BoogieIcfgContainer [2020-07-21 22:02:08,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:08,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:08,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:08,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:08,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:02:07" (1/3) ... [2020-07-21 22:02:08,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd16bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:08, skipping insertion in model container [2020-07-21 22:02:08,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:02:08" (2/3) ... [2020-07-21 22:02:08,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dd16bbc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:08, skipping insertion in model container [2020-07-21 22:02:08,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:08" (3/3) ... [2020-07-21 22:02:08,708 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-21 22:02:08,720 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:08,727 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:08,740 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:08,762 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:08,762 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:08,762 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:08,763 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:08,763 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:08,763 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:08,763 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:08,763 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:08,781 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 22:02:08,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 22:02:08,789 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:08,790 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] [2020-07-21 22:02:08,791 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:08,797 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-21 22:02:08,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:08,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577796347] [2020-07-21 22:02:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:08,940 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:02:08,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:08,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:02:08,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:08,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 22:02:08,974 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:08,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577796347] [2020-07-21 22:02:08,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:08,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:02:08,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361842333] [2020-07-21 22:02:08,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:02:08,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:08,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:02:08,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:08,996 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 22:02:09,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:09,032 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-21 22:02:09,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:09,035 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-21 22:02:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:09,050 INFO L225 Difference]: With dead ends: 138 [2020-07-21 22:02:09,051 INFO L226 Difference]: Without dead ends: 68 [2020-07-21 22:02:09,056 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:09,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-21 22:02:09,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-21 22:02:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 22:02:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-21 22:02:09,101 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-21 22:02:09,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:09,101 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-21 22:02:09,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:02:09,102 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-21 22:02:09,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-21 22:02:09,103 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:09,103 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] [2020-07-21 22:02:09,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:09,320 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:09,321 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-21 22:02:09,322 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:09,322 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1591343872] [2020-07-21 22:02:09,323 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:09,467 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:09,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:02:09,467 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:09,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:02:09,538 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:09,577 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:02:09,578 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:02:09,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:09,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:09 BoogieIcfgContainer [2020-07-21 22:02:09,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:09,823 INFO L168 Benchmark]: Toolchain (without parser) took 2259.07 ms. Allocated memory was 138.4 MB in the beginning and 234.9 MB in the end (delta: 96.5 MB). Free memory was 101.0 MB in the beginning and 198.1 MB in the end (delta: -97.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:02:09,824 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:02:09,825 INFO L168 Benchmark]: CACSL2BoogieTranslator took 474.39 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 176.3 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:09,826 INFO L168 Benchmark]: Boogie Preprocessor took 58.92 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 173.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:09,826 INFO L168 Benchmark]: RCFGBuilder took 597.29 ms. Allocated memory is still 201.9 MB. Free memory was 173.3 MB in the beginning and 137.5 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:09,827 INFO L168 Benchmark]: TraceAbstraction took 1123.40 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 136.5 MB in the beginning and 198.1 MB in the end (delta: -61.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-21 22:02:09,831 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.4 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 474.39 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 100.6 MB in the beginning and 176.3 MB in the end (delta: -75.6 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.92 ms. Allocated memory is still 201.9 MB. Free memory was 176.3 MB in the beginning and 173.3 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 597.29 ms. Allocated memory is still 201.9 MB. Free memory was 173.3 MB in the beginning and 137.5 MB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1123.40 ms. Allocated memory was 201.9 MB in the beginning and 234.9 MB in the end (delta: 33.0 MB). Free memory was 136.5 MB in the beginning and 198.1 MB in the end (delta: -61.5 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, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=7, \old(Zero_fmod)=9, one_fmod=1, Zero_fmod={4:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={4:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [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); VAL [\old(x)=3, \result=-1, hx=2147483647, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-1, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=4, one_fmod=1, Zero_fmod={4:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=4, one_fmod=1, x=3, y=4, Zero_fmod={4:0}] [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 VAL [\old(x)=3, \old(y)=4, lx=17, ly=20, one_fmod=1, sx=4294967295, x=3, y=4, Zero_fmod={4:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=4, hx=0, lx=17, ly=20, one_fmod=1, sx=4294967295, x=3, y=4, Zero_fmod={4:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=7, one_fmod=1, x=3, y=4, Zero_fmod={4:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={4:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 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, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 1 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...