/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:39:58,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:39:58,227 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:39:58,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:39:58,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:39:58,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:39:58,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:39:58,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:39:58,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:39:58,244 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:39:58,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:39:58,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:39:58,247 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:39:58,247 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:39:58,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:39:58,250 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:39:58,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:39:58,251 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:39:58,253 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:39:58,255 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:39:58,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:39:58,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:39:58,259 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:39:58,260 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:39:58,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 10:39:58,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:39:58,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:39:58,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:39:58,272 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 10:39:58,286 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:39:58,286 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:39:58,287 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:39:58,288 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:39:58,288 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:39:58,288 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:39:58,288 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:39:58,288 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:39:58,289 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:39:58,289 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:39:58,289 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:39:58,289 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:39:58,289 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:39:58,290 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:39:58,290 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:39:58,290 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:39:58,290 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:39:58,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:39:58,291 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:39:58,291 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:39:58,291 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:39:58,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:39:58,291 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:39:58,292 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:39:58,292 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:39:58,292 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:39:58,292 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:58,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:39:58,293 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:39:58,293 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 -> NOT_INCREMENTALLY [2020-07-21 10:39:58,591 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:39:58,602 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:39:58,605 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:39:58,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:39:58,609 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:39:58,610 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-07-21 10:39:58,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4992e5a/eed2158cf785449ba026f184b6a04a65/FLAG919ad3114 [2020-07-21 10:39:59,112 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:39:59,112 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1300.c [2020-07-21 10:39:59,119 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4992e5a/eed2158cf785449ba026f184b6a04a65/FLAG919ad3114 [2020-07-21 10:39:59,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e4992e5a/eed2158cf785449ba026f184b6a04a65 [2020-07-21 10:39:59,549 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:39:59,552 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:39:59,553 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:59,553 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:39:59,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:39:59,558 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5302f4c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59, skipping insertion in model container [2020-07-21 10:39:59,561 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:39:59,586 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:39:59,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:59,762 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:39:59,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:59,810 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:39:59,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59 WrapperNode [2020-07-21 10:39:59,811 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:59,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:39:59,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:39:59,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:39:59,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (1/1) ... [2020-07-21 10:39:59,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:39:59,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:39:59,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:39:59,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:39:59,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (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 10:40:00,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:40:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:40:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-07-21 10:40:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 10:40:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-21 10:40:00,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:40:00,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:40:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-21 10:40:00,007 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-07-21 10:40:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:40:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 10:40:00,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:40:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:40:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 10:40:00,009 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-21 10:40:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:40:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:40:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:40:00,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 10:40:00,011 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:40:00,359 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:40:00,359 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 10:40:00,363 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:00 BoogieIcfgContainer [2020-07-21 10:40:00,363 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:40:00,364 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:40:00,364 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:40:00,367 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:40:00,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:59" (1/3) ... [2020-07-21 10:40:00,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c987294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:00, skipping insertion in model container [2020-07-21 10:40:00,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:59" (2/3) ... [2020-07-21 10:40:00,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c987294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:40:00, skipping insertion in model container [2020-07-21 10:40:00,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:40:00" (3/3) ... [2020-07-21 10:40:00,371 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1300.c [2020-07-21 10:40:00,379 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:40:00,386 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:40:00,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:40:00,417 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:40:00,418 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:40:00,418 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:40:00,418 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:40:00,418 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:40:00,418 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:40:00,418 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:40:00,418 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:40:00,436 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-07-21 10:40:00,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 10:40:00,443 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:00,443 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 10:40:00,444 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:00,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:00,450 INFO L82 PathProgramCache]: Analyzing trace with hash -829971037, now seen corresponding path program 1 times [2020-07-21 10:40:00,458 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:00,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556829414] [2020-07-21 10:40:00,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:00,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:40:00,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:00,584 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 10:40:00,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:00,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556829414] [2020-07-21 10:40:00,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:00,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:40:00,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893066495] [2020-07-21 10:40:00,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:40:00,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:00,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:40:00,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:40:00,608 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 2 states. [2020-07-21 10:40:00,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:00,634 INFO L93 Difference]: Finished difference Result 66 states and 79 transitions. [2020-07-21 10:40:00,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:40:00,635 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 24 [2020-07-21 10:40:00,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:00,644 INFO L225 Difference]: With dead ends: 66 [2020-07-21 10:40:00,644 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 10:40:00,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 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 10:40:00,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 10:40:00,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-21 10:40:00,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 10:40:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-21 10:40:00,688 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 24 [2020-07-21 10:40:00,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:00,688 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-21 10:40:00,688 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:40:00,689 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-21 10:40:00,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-21 10:40:00,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:00,690 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] [2020-07-21 10:40:00,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:00,905 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:00,907 INFO L82 PathProgramCache]: Analyzing trace with hash 905994018, now seen corresponding path program 1 times [2020-07-21 10:40:00,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:00,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101593716] [2020-07-21 10:40:00,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 10:40:00,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:40:00,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 10:40:00,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:40:01,007 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 10:40:01,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:40:01,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101593716] [2020-07-21 10:40:01,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:40:01,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 10:40:01,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582548197] [2020-07-21 10:40:01,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 10:40:01,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:40:01,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 10:40:01,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:40:01,012 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 3 states. [2020-07-21 10:40:01,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:40:01,027 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-07-21 10:40:01,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 10:40:01,028 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-07-21 10:40:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:40:01,029 INFO L225 Difference]: With dead ends: 44 [2020-07-21 10:40:01,030 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 10:40:01,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 10:40:01,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 10:40:01,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-07-21 10:40:01,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 10:40:01,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 31 transitions. [2020-07-21 10:40:01,037 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 31 transitions. Word has length 26 [2020-07-21 10:40:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:40:01,038 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 31 transitions. [2020-07-21 10:40:01,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 10:40:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 31 transitions. [2020-07-21 10:40:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 10:40:01,039 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:40:01,039 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:40:01,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:01,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:40:01,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:40:01,256 INFO L82 PathProgramCache]: Analyzing trace with hash 859982537, now seen corresponding path program 1 times [2020-07-21 10:40:01,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:40:01,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607969086] [2020-07-21 10:40:01,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:01,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:40:01,324 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:40:01,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:40:01,353 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:40:01,380 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:40:01,380 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:40:01,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:40:01,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:40:01 BoogieIcfgContainer [2020-07-21 10:40:01,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:40:01,630 INFO L168 Benchmark]: Toolchain (without parser) took 2078.28 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 100.9 MB in the beginning and 97.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 59.5 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:01,631 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 10:40:01,632 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.86 ms. Allocated memory is still 143.7 MB. Free memory was 100.5 MB in the beginning and 89.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:01,633 INFO L168 Benchmark]: Boogie Preprocessor took 125.66 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 89.8 MB in the beginning and 177.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:01,634 INFO L168 Benchmark]: RCFGBuilder took 425.71 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 157.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:01,635 INFO L168 Benchmark]: TraceAbstraction took 1263.08 ms. Allocated memory is still 200.3 MB. Free memory was 157.7 MB in the beginning and 97.9 MB in the end (delta: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:40:01,639 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 143.7 MB. Free memory was 119.8 MB in the beginning and 119.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.86 ms. Allocated memory is still 143.7 MB. Free memory was 100.5 MB in the beginning and 89.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.66 ms. Allocated memory was 143.7 MB in the beginning and 200.3 MB in the end (delta: 56.6 MB). Free memory was 89.8 MB in the beginning and 177.5 MB in the end (delta: -87.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 425.71 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 157.7 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1263.08 ms. Allocated memory is still 200.3 MB. Free memory was 157.7 MB in the beginning and 97.9 MB in the end (delta: 59.8 MB). Peak memory consumption was 59.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 25, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 58, overapproximation of to_real at line 55. Possible FailurePath: [L50] double x = __VERIFIER_nondet_double(); [L53] CALL, EXPR isinf_double(x) VAL [\old(x)=0] [L17] __int32_t hx, lx; VAL [\old(x)=0, x=0] [L19] ieee_double_shape_type ew_u; [L20] ew_u.value = (x) [L21] EXPR ew_u.parts.msw [L21] (hx) = ew_u.parts.msw [L22] EXPR ew_u.parts.lsw [L22] (lx) = ew_u.parts.lsw [L24] hx &= 0x7fffffff [L25] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L26] hx = 0x7ff00000 - hx [L27] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=0, \result=0, hx=2146435072, lx=2147483647, x=0] [L53] RET, EXPR isinf_double(x) VAL [isinf_double(x)=0, x=0] [L53] !isinf_double(x) && !isnan_double(x) VAL [!isinf_double(x) && !isnan_double(x)=1, isinf_double(x)=0, x=0] [L53] CALL, EXPR isnan_double(x) VAL [\old(x)=0] [L31] return x != x; VAL [\old(x)=0, \result=0, x=0] [L53] RET, EXPR isnan_double(x) VAL [!isinf_double(x) && !isnan_double(x)=1, isinf_double(x)=0, isnan_double(x)=0, x=0] [L53] !isinf_double(x) && !isnan_double(x) VAL [!isinf_double(x) && !isnan_double(x)=1, isinf_double(x)=0, isnan_double(x)=0, x=0] [L53] COND TRUE !isinf_double(x) && !isnan_double(x) [L55] CALL, EXPR isfinite_double(x) VAL [\old(x)=0] [L34] __int32_t hx; VAL [\old(x)=0, x=0] [L36] ieee_double_shape_type gh_u; [L37] gh_u.value = (x) [L38] EXPR gh_u.parts.msw [L38] (hx) = gh_u.parts.msw [L40] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=0, \result=0, hx=0, x=0] [L55] RET, EXPR isfinite_double(x) VAL [isfinite_double(x)=0, x=0] [L55] double res = isfinite_double(x); [L58] COND TRUE res == 0.0 VAL [x=0] [L59] __VERIFIER_error() VAL [x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 0 SDslu, 27 SDs, 0 SdLazy, 4 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 81 NumberOfCodeBlocks, 81 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 48 ConstructedInterpolants, 0 QuantifiedInterpolants, 1179 SizeOfPredicates, 0 NumberOfNonLiveVariables, 183 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...