/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 NUM_FUNCTIONS --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_1092a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 13:05:54,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 13:05:54,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 13:05:54,121 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 13:05:54,121 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 13:05:54,123 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 13:05:54,125 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 13:05:54,139 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 13:05:54,140 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 13:05:54,141 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 13:05:54,142 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 13:05:54,145 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 13:05:54,145 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 13:05:54,149 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 13:05:54,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 13:05:54,154 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 13:05:54,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 13:05:54,159 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 13:05:54,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 13:05:54,167 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 13:05:54,172 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 13:05:54,175 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 13:05:54,177 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 13:05:54,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 13:05:54,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 13:05:54,182 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 13:05:54,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 13:05:54,185 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 13:05:54,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 13:05:54,187 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 13:05:54,188 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 13:05:54,189 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 13:05:54,190 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 13:05:54,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 13:05:54,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 13:05:54,192 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 13:05:54,193 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 13:05:54,193 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 13:05:54,193 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 13:05:54,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 13:05:54,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 13:05:54,196 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 [2020-07-20 13:05:54,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 13:05:54,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 13:05:54,218 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 13:05:54,218 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 13:05:54,218 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 13:05:54,219 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 13:05:54,219 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 13:05:54,219 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 13:05:54,219 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 13:05:54,219 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 13:05:54,220 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 13:05:54,221 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 13:05:54,221 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 13:05:54,221 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 13:05:54,222 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 13:05:54,222 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 13:05:54,222 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 13:05:54,222 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 13:05:54,222 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 13:05:54,223 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 13:05:54,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 13:05:54,223 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 13:05:54,223 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 13:05:54,223 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 13:05:54,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 13:05:54,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 13:05:54,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:54,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 13:05:54,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 13:05:54,224 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 -> NUM_FUNCTIONS 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 [2020-07-20 13:05:54,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 13:05:54,518 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 13:05:54,521 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 13:05:54,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 13:05:54,523 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 13:05:54,524 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-07-20 13:05:54,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05d31883/d2ff0f72f82947dca13c700e6948e9d5/FLAG18775c508 [2020-07-20 13:05:55,091 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 13:05:55,092 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1092a.c [2020-07-20 13:05:55,098 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05d31883/d2ff0f72f82947dca13c700e6948e9d5/FLAG18775c508 [2020-07-20 13:05:55,443 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d05d31883/d2ff0f72f82947dca13c700e6948e9d5 [2020-07-20 13:05:55,453 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 13:05:55,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 13:05:55,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:55,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 13:05:55,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 13:05:55,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee61c50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55, skipping insertion in model container [2020-07-20 13:05:55,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 13:05:55,494 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 13:05:55,690 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:55,694 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 13:05:55,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 13:05:55,747 INFO L208 MainTranslator]: Completed translation [2020-07-20 13:05:55,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55 WrapperNode [2020-07-20 13:05:55,748 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 13:05:55,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 13:05:55,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 13:05:55,749 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 13:05:55,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,865 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (1/1) ... [2020-07-20 13:05:55,870 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 13:05:55,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 13:05:55,870 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 13:05:55,870 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 13:05:55,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (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 [2020-07-20 13:05:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 13:05:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 13:05:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 13:05:55,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_double [2020-07-20 13:05:55,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 13:05:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 13:05:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 13:05:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_double [2020-07-20 13:05:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 13:05:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 13:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 13:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 13:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 13:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 13:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 13:05:55,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 13:05:55,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 13:05:56,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 13:05:56,299 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-20 13:05:56,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:56 BoogieIcfgContainer [2020-07-20 13:05:56,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 13:05:56,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 13:05:56,305 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 13:05:56,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 13:05:56,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:05:55" (1/3) ... [2020-07-20 13:05:56,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47270e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:56, skipping insertion in model container [2020-07-20 13:05:56,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:05:55" (2/3) ... [2020-07-20 13:05:56,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47270e8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:05:56, skipping insertion in model container [2020-07-20 13:05:56,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:05:56" (3/3) ... [2020-07-20 13:05:56,311 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1092a.c [2020-07-20 13:05:56,322 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 13:05:56,329 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 13:05:56,343 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 13:05:56,366 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 13:05:56,367 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 13:05:56,367 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 13:05:56,367 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 13:05:56,367 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 13:05:56,367 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 13:05:56,367 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 13:05:56,367 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 13:05:56,384 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-07-20 13:05:56,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 13:05:56,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:05:56,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:05:56,392 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:05:56,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:05:56,397 INFO L82 PathProgramCache]: Analyzing trace with hash -321966810, now seen corresponding path program 1 times [2020-07-20 13:05:56,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:05:56,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2067603749] [2020-07-20 13:05:56,407 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 [2020-07-20 13:05:56,528 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 13:05:56,528 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 13:05:56,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 13:05:56,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 13:05:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 13:05:56,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 13:05:56,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2067603749] [2020-07-20 13:05:56,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 13:05:56,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 13:05:56,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255508086] [2020-07-20 13:05:56,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 13:05:56,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 13:05:56,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 13:05:56,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:05:56,589 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 2 states. [2020-07-20 13:05:56,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 13:05:56,616 INFO L93 Difference]: Finished difference Result 76 states and 114 transitions. [2020-07-20 13:05:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 13:05:56,621 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 18 [2020-07-20 13:05:56,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 13:05:56,633 INFO L225 Difference]: With dead ends: 76 [2020-07-20 13:05:56,634 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 13:05:56,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 13:05:56,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 13:05:56,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-20 13:05:56,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-20 13:05:56,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2020-07-20 13:05:56,683 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 52 transitions. Word has length 18 [2020-07-20 13:05:56,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 13:05:56,684 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 52 transitions. [2020-07-20 13:05:56,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 13:05:56,685 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 52 transitions. [2020-07-20 13:05:56,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 13:05:56,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 13:05:56,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 13:05:56,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:56,900 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 13:05:56,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 13:05:56,901 INFO L82 PathProgramCache]: Analyzing trace with hash 422703747, now seen corresponding path program 1 times [2020-07-20 13:05:56,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 13:05:56,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [126905040] [2020-07-20 13:05:56,903 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 [2020-07-20 13:05:56,988 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 13:05:56,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 13:05:56,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:05:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 13:05:57,018 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 13:05:57,059 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 13:05:57,059 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 13:05:57,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 13:05:57,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:05:57 BoogieIcfgContainer [2020-07-20 13:05:57,317 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 13:05:57,319 INFO L168 Benchmark]: Toolchain (without parser) took 1863.53 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 101.4 MB in the beginning and 117.2 MB in the end (delta: -15.8 MB). Peak memory consumption was 48.7 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:57,320 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 13:05:57,321 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.43 ms. Allocated memory is still 137.9 MB. Free memory was 101.0 MB in the beginning and 89.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:57,322 INFO L168 Benchmark]: Boogie Preprocessor took 121.25 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 89.6 MB in the beginning and 179.8 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:57,323 INFO L168 Benchmark]: RCFGBuilder took 433.18 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 157.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:57,324 INFO L168 Benchmark]: TraceAbstraction took 1012.26 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 117.2 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-07-20 13:05:57,328 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 290.43 ms. Allocated memory is still 137.9 MB. Free memory was 101.0 MB in the beginning and 89.6 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.25 ms. Allocated memory was 137.9 MB in the beginning and 202.4 MB in the end (delta: 64.5 MB). Free memory was 89.6 MB in the beginning and 179.8 MB in the end (delta: -90.1 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.18 ms. Allocated memory is still 202.4 MB. Free memory was 179.8 MB in the beginning and 157.2 MB in the end (delta: 22.5 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1012.26 ms. Allocated memory is still 202.4 MB. Free memory was 157.2 MB in the beginning and 117.2 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 41, overapproximation of bitwiseOr at line 42, overapproximation of someUnaryDOUBLEoperation at line 91, overapproximation of bitwiseAnd at line 28, overapproximation of someBinaryDOUBLEComparisonOperation at line 95. Possible FailurePath: [L17] static const double huge_ceil = 1.0e300; VAL [\old(huge_ceil)=0, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double x = -0.0; VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L92] CALL, EXPR ceil_double(x) VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L20] __int32_t i0, i1, j0; [L21] __uint32_t i, j; VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (i0) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (i1) = ew_u.parts.lsw [L28] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=2147483647, x=4] [L29] COND TRUE j0 < 20 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=2147483647, j0=0, x=4] [L30] COND FALSE !(j0 < 0) [L41] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=2147483647, j0=0, x=4] [L42] COND TRUE ((i0 & i) | i1) == 0 [L43] return x; VAL [\old(x)=4, \result=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=2147483647, j0=0, x=4] [L92] RET, EXPR ceil_double(x) VAL [ceil_double(x)=4, huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L92] double res = ceil_double(x); [L95] COND TRUE res != x VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] [L96] __VERIFIER_error() VAL [huge_ceil=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 37 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 289 SizeOfPredicates, 0 NumberOfNonLiveVariables, 60 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...