/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_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 22:01:57,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 22:01:57,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 22:01:57,991 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 22:01:57,991 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 22:01:57,993 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 22:01:57,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 22:01:58,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 22:01:58,007 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 22:01:58,008 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 22:01:58,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 22:01:58,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 22:01:58,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 22:01:58,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 22:01:58,017 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 22:01:58,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 22:01:58,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 22:01:58,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 22:01:58,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 22:01:58,031 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 22:01:58,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 22:01:58,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 22:01:58,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 22:01:58,041 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 22:01:58,044 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 22:01:58,044 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 22:01:58,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 22:01:58,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 22:01:58,048 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 22:01:58,049 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 22:01:58,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 22:01:58,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 22:01:58,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 22:01:58,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 22:01:58,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 22:01:58,053 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 22:01:58,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 22:01:58,054 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 22:01:58,054 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 22:01:58,055 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 22:01:58,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 22:01:58,057 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 22:01:58,093 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 22:01:58,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 22:01:58,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 22:01:58,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 22:01:58,096 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 22:01:58,096 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 22:01:58,096 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 22:01:58,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 22:01:58,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 22:01:58,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 22:01:58,099 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 22:01:58,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 22:01:58,099 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 22:01:58,099 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 22:01:58,099 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 22:01:58,100 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 22:01:58,100 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 22:01:58,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 22:01:58,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 22:01:58,102 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 22:01:58,102 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 22:01:58,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 22:01:58,105 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 22:01:58,105 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 22:01:58,105 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 22:01:58,105 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 22:01:58,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:01:58,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 22:01:58,106 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 22:01:58,106 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 22:01:58,437 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 22:01:58,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 22:01:58,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 22:01:58,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 22:01:58,462 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 22:01:58,463 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-07-21 22:01:58,519 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965b37b5e/c6637aae44bf4784b9e407997117e577/FLAG989c15d0b [2020-07-21 22:01:58,963 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 22:01:58,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1031.c [2020-07-21 22:01:58,976 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965b37b5e/c6637aae44bf4784b9e407997117e577/FLAG989c15d0b [2020-07-21 22:01:59,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/965b37b5e/c6637aae44bf4784b9e407997117e577 [2020-07-21 22:01:59,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 22:01:59,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 22:01:59,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 22:01:59,373 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 22:01:59,376 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 22:01:59,377 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59a156c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59, skipping insertion in model container [2020-07-21 22:01:59,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 22:01:59,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 22:01:59,635 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:01:59,639 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 22:01:59,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 22:01:59,782 INFO L208 MainTranslator]: Completed translation [2020-07-21 22:01:59,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59 WrapperNode [2020-07-21 22:01:59,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 22:01:59,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 22:01:59,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 22:01:59,784 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 22:01:59,798 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,798 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,826 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,828 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (1/1) ... [2020-07-21 22:01:59,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 22:01:59,835 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 22:01:59,835 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 22:01:59,835 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 22:01:59,836 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (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 22:01:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 22:01:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 22:01:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 22:01:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-07-21 22:01:59,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 22:01:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 22:01:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 22:01:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-07-21 22:01:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 22:01:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 22:01:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 22:01:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 22:01:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 22:01:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 22:01:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 22:01:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 22:01:59,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 22:02:00,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 22:02:00,233 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 22:02:00,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:00 BoogieIcfgContainer [2020-07-21 22:02:00,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 22:02:00,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 22:02:00,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 22:02:00,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 22:02:00,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:01:59" (1/3) ... [2020-07-21 22:02:00,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddfd5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:00, skipping insertion in model container [2020-07-21 22:02:00,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:01:59" (2/3) ... [2020-07-21 22:02:00,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ddfd5e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:02:00, skipping insertion in model container [2020-07-21 22:02:00,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:02:00" (3/3) ... [2020-07-21 22:02:00,248 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1031.c [2020-07-21 22:02:00,260 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 22:02:00,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 22:02:00,286 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 22:02:00,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 22:02:00,312 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 22:02:00,312 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 22:02:00,312 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 22:02:00,312 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 22:02:00,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 22:02:00,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 22:02:00,313 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 22:02:00,333 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-07-21 22:02:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 22:02:00,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:00,343 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] [2020-07-21 22:02:00,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:00,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:00,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1071653874, now seen corresponding path program 1 times [2020-07-21 22:02:00,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:00,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892031759] [2020-07-21 22:02:00,360 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 22:02:00,450 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 22:02:00,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 22:02:00,453 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 22:02:00,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 22:02:00,482 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 22:02:00,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 22:02:00,483 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892031759] [2020-07-21 22:02:00,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 22:02:00,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 22:02:00,486 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298057241] [2020-07-21 22:02:00,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 22:02:00,492 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 22:02:00,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 22:02:00,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 22:02:00,509 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 2 states. [2020-07-21 22:02:00,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 22:02:00,535 INFO L93 Difference]: Finished difference Result 70 states and 94 transitions. [2020-07-21 22:02:00,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 22:02:00,537 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 22:02:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 22:02:00,549 INFO L225 Difference]: With dead ends: 70 [2020-07-21 22:02:00,550 INFO L226 Difference]: Without dead ends: 35 [2020-07-21 22:02:00,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 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 22:02:00,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-21 22:02:00,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-07-21 22:02:00,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-07-21 22:02:00,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-07-21 22:02:00,597 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 23 [2020-07-21 22:02:00,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 22:02:00,598 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-07-21 22:02:00,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 22:02:00,599 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-07-21 22:02:00,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 22:02:00,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 22:02:00,601 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] [2020-07-21 22:02:00,816 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:00,816 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 22:02:00,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 22:02:00,817 INFO L82 PathProgramCache]: Analyzing trace with hash -308920579, now seen corresponding path program 1 times [2020-07-21 22:02:00,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 22:02:00,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067683979] [2020-07-21 22:02:00,818 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 22:02:00,894 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 22:02:00,894 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 22:02:00,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 22:02:00,916 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 22:02:00,939 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 22:02:00,939 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 22:02:01,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 22:02:01,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:02:01 BoogieIcfgContainer [2020-07-21 22:02:01,186 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 22:02:01,189 INFO L168 Benchmark]: Toolchain (without parser) took 1817.63 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.9 MB in the beginning and 118.9 MB in the end (delta: -17.0 MB). Peak memory consumption was 40.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:01,190 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 22:02:01,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 410.59 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.5 MB in the beginning and 180.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:01,192 INFO L168 Benchmark]: Boogie Preprocessor took 51.38 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:01,193 INFO L168 Benchmark]: RCFGBuilder took 402.15 ms. Allocated memory is still 202.9 MB. Free memory was 178.9 MB in the beginning and 158.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:01,193 INFO L168 Benchmark]: TraceAbstraction took 946.75 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 118.9 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. [2020-07-21 22:02:01,197 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.7 MB in the beginning and 120.4 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 410.59 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 101.5 MB in the beginning and 180.8 MB in the end (delta: -79.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.38 ms. Allocated memory is still 202.9 MB. Free memory was 180.8 MB in the beginning and 178.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 402.15 ms. Allocated memory is still 202.9 MB. Free memory was 178.9 MB in the beginning and 158.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 946.75 ms. Allocated memory is still 202.9 MB. Free memory was 158.0 MB in the beginning and 118.9 MB in the end (delta: 39.1 MB). Peak memory consumption was 39.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 74, overapproximation of bitwiseAnd at line 35, overapproximation of someBinaryDOUBLEComparisonOperation at line 15. Possible FailurePath: [L74] double x = 0.0 / 0.0; [L75] CALL, EXPR round_double(x) VAL [\old(x)=3] [L18] __int32_t msw, exponent_less_1023; [L19] __uint32_t lsw; VAL [\old(x)=3, x=3] [L21] ieee_double_shape_type ew_u; [L22] ew_u.value = (x) [L23] EXPR ew_u.parts.msw [L23] (msw) = ew_u.parts.msw [L24] EXPR ew_u.parts.lsw [L24] (lsw) = ew_u.parts.lsw [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=0, x=3] [L27] COND TRUE exponent_less_1023 < 20 VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=0, x=3] [L28] COND FALSE !(exponent_less_1023 < 0) [L34] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; VAL [\old(x)=3, exponent_less_1023=0, lsw=0, msw=0, x=3] [L35] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L36] return x; VAL [\old(x)=3, \result=3, exponent_less_1023=0, lsw=0, msw=0, x=3] [L75] RET, EXPR round_double(x) VAL [round_double(x)=3, x=3] [L75] double res = round_double(x); [L78] CALL, EXPR isnan_double(res) VAL [\old(x)=3] [L15] return x != x; VAL [\old(x)=3, \result=0, x=3] [L78] RET, EXPR isnan_double(res) VAL [isnan_double(res)=0, res=3, x=3] [L78] COND TRUE !isnan_double(res) [L79] __VERIFIER_error() VAL [res=3, x=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 39 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 48 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...