/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_1131a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 10:45:07,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 10:45:07,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 10:45:07,679 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 10:45:07,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 10:45:07,680 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 10:45:07,682 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 10:45:07,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 10:45:07,686 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 10:45:07,687 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 10:45:07,688 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 10:45:07,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 10:45:07,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 10:45:07,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 10:45:07,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 10:45:07,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 10:45:07,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 10:45:07,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 10:45:07,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 10:45:07,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 10:45:07,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 10:45:07,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 10:45:07,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 10:45:07,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 10:45:07,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 10:45:07,714 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 10:45:07,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 10:45:07,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 10:45:07,721 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 10:45:07,744 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 10:45:07,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 10:45:07,746 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 10:45:07,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 10:45:07,747 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 10:45:07,747 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 10:45:07,747 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 10:45:07,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 10:45:07,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 10:45:07,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 10:45:07,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 10:45:07,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 10:45:07,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 10:45:07,750 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 10:45:07,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 10:45:07,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 10:45:07,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 10:45:07,751 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 10:45:07,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 10:45:07,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 10:45:07,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 10:45:07,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 10:45:07,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 10:45:07,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 10:45:07,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 10:45:07,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 10:45:07,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:07,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 10:45:07,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 10:45:07,753 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 [2020-07-20 10:45:08,064 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 10:45:08,080 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 10:45:08,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 10:45:08,084 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 10:45:08,085 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 10:45:08,086 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 10:45:08,162 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8aa13d77/e183d81896454b03810b12f5a4013efe/FLAGfcc96d96f [2020-07-20 10:45:08,672 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 10:45:08,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1131a.c [2020-07-20 10:45:08,681 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8aa13d77/e183d81896454b03810b12f5a4013efe/FLAGfcc96d96f [2020-07-20 10:45:09,041 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8aa13d77/e183d81896454b03810b12f5a4013efe [2020-07-20 10:45:09,050 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 10:45:09,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 10:45:09,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:09,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 10:45:09,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 10:45:09,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35aee97e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09, skipping insertion in model container [2020-07-20 10:45:09,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 10:45:09,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 10:45:09,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:09,369 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 10:45:09,514 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 10:45:09,535 INFO L208 MainTranslator]: Completed translation [2020-07-20 10:45:09,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09 WrapperNode [2020-07-20 10:45:09,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 10:45:09,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 10:45:09,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 10:45:09,537 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 10:45:09,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,601 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (1/1) ... [2020-07-20 10:45:09,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 10:45:09,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 10:45:09,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 10:45:09,610 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 10:45:09,611 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (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 10:45:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 10:45:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 10:45:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-20 10:45:09,679 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-07-20 10:45:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-07-20 10:45:09,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 10:45:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 10:45:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 10:45:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-20 10:45:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-07-20 10:45:09,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 10:45:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 10:45:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 10:45:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 10:45:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 10:45:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 10:45:09,681 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-07-20 10:45:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 10:45:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 10:45:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-07-20 10:45:09,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 10:45:10,256 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 10:45:10,256 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-07-20 10:45:10,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10 BoogieIcfgContainer [2020-07-20 10:45:10,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 10:45:10,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 10:45:10,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 10:45:10,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 10:45:10,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:45:09" (1/3) ... [2020-07-20 10:45:10,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3f1c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:10, skipping insertion in model container [2020-07-20 10:45:10,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:45:09" (2/3) ... [2020-07-20 10:45:10,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f3f1c04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:45:10, skipping insertion in model container [2020-07-20 10:45:10,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:45:10" (3/3) ... [2020-07-20 10:45:10,270 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1131a.c [2020-07-20 10:45:10,282 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 10:45:10,289 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 10:45:10,301 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 10:45:10,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 10:45:10,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 10:45:10,324 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 10:45:10,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 10:45:10,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 10:45:10,324 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 10:45:10,324 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 10:45:10,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 10:45:10,344 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-20 10:45:10,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-20 10:45:10,352 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:10,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:45:10,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:10,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:10,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1043474736, now seen corresponding path program 1 times [2020-07-20 10:45:10,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:10,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305526250] [2020-07-20 10:45:10,371 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 [2020-07-20 10:45:10,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 10:45:10,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 10:45:10,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 10:45:10,531 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 10:45:10,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 10:45:10,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305526250] [2020-07-20 10:45:10,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 10:45:10,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 10:45:10,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927906267] [2020-07-20 10:45:10,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 10:45:10,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 10:45:10,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 10:45:10,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:10,560 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-20 10:45:10,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 10:45:10,613 INFO L93 Difference]: Finished difference Result 138 states and 227 transitions. [2020-07-20 10:45:10,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 10:45:10,615 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 25 [2020-07-20 10:45:10,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 10:45:10,631 INFO L225 Difference]: With dead ends: 138 [2020-07-20 10:45:10,632 INFO L226 Difference]: Without dead ends: 68 [2020-07-20 10:45:10,637 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 10:45:10,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-20 10:45:10,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-07-20 10:45:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-20 10:45:10,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 94 transitions. [2020-07-20 10:45:10,694 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 94 transitions. Word has length 25 [2020-07-20 10:45:10,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 10:45:10,694 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 94 transitions. [2020-07-20 10:45:10,695 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 10:45:10,695 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 94 transitions. [2020-07-20 10:45:10,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-07-20 10:45:10,696 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 10:45:10,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 10:45:10,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:10,907 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 10:45:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 10:45:10,908 INFO L82 PathProgramCache]: Analyzing trace with hash 415947806, now seen corresponding path program 1 times [2020-07-20 10:45:10,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 10:45:10,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185642712] [2020-07-20 10:45:10,909 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 [2020-07-20 10:45:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:10,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 10:45:11,030 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 10:45:11,085 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 10:45:11,086 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 10:45:11,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 10:45:11,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:45:11 BoogieIcfgContainer [2020-07-20 10:45:11,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 10:45:11,344 INFO L168 Benchmark]: Toolchain (without parser) took 2290.79 ms. Allocated memory was 137.4 MB in the beginning and 231.7 MB in the end (delta: 94.4 MB). Free memory was 101.6 MB in the beginning and 198.5 MB in the end (delta: -96.9 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,345 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,346 INFO L168 Benchmark]: CACSL2BoogieTranslator took 482.23 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 175.6 MB in the end (delta: -74.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,347 INFO L168 Benchmark]: Boogie Preprocessor took 73.15 ms. Allocated memory is still 200.8 MB. Free memory was 175.6 MB in the beginning and 172.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,348 INFO L168 Benchmark]: RCFGBuilder took 651.85 ms. Allocated memory is still 200.8 MB. Free memory was 172.9 MB in the beginning and 136.8 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,349 INFO L168 Benchmark]: TraceAbstraction took 1077.88 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 136.1 MB in the beginning and 198.5 MB in the end (delta: -62.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. [2020-07-20 10:45:11,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 482.23 ms. Allocated memory was 137.4 MB in the beginning and 200.8 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 175.6 MB in the end (delta: -74.5 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.15 ms. Allocated memory is still 200.8 MB. Free memory was 175.6 MB in the beginning and 172.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 651.85 ms. Allocated memory is still 200.8 MB. Free memory was 172.9 MB in the beginning and 136.8 MB in the end (delta: 36.1 MB). Peak memory consumption was 36.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1077.88 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 136.1 MB in the beginning and 198.5 MB in the end (delta: -62.3 MB). Peak memory consumption was 59.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 189]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of bitwiseAnd at line 39, overapproximation of someBinaryDOUBLEComparisonOperation at line 188, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=2, \old(Zero_fmod)=9, \old(Zero_fmod)=7, one_fmod=1, Zero_fmod={4:0}] [L180] double y = 1.0 / 0.0; [L181] double x = __VERIFIER_nondet_double(); [L183] CALL isfinite_double(x) VAL [\old(x)=3, one_fmod=1, Zero_fmod={4:0}] [L164] __int32_t hx; VAL [\old(x)=3, one_fmod=1, x=3, Zero_fmod={4:0}] [L166] ieee_double_shape_type gh_u; [L167] gh_u.value = (x) [L168] EXPR gh_u.parts.msw [L168] (hx) = gh_u.parts.msw [L170] return (int)((__uint32_t)((hx & 0x7fffffff) - 0x7ff00000) >> 31); VAL [\old(x)=3, \result=-1, hx=0, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] RET isfinite_double(x) VAL [isfinite_double(x)=-1, one_fmod=1, x=3, Zero_fmod={4:0}] [L183] COND TRUE isfinite_double(x) [L185] CALL, EXPR fmod_double(x, y) VAL [\old(x)=3, \old(y)=4, one_fmod=1, Zero_fmod={4:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; [L25] __uint32_t lx, ly, lz; VAL [\old(x)=3, \old(y)=4, one_fmod=1, x=3, y=4, Zero_fmod={4:0}] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (hx) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (lx) = ew_u.parts.lsw [L34] ieee_double_shape_type ew_u; [L35] ew_u.value = (y) [L36] EXPR ew_u.parts.msw [L36] (hy) = ew_u.parts.msw [L37] EXPR ew_u.parts.lsw [L37] (ly) = ew_u.parts.lsw [L39] sx = hx & 0x80000000 [L40] hx ^= sx [L41] hy &= 0x7fffffff VAL [\old(x)=3, \old(y)=4, lx=17, ly=20, one_fmod=1, sx=4294967295, x=3, y=4, Zero_fmod={4:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) [L45] return (x * y) / (x * y); VAL [\old(x)=3, \old(y)=4, hx=0, lx=17, ly=20, one_fmod=1, sx=4294967295, x=3, y=4, Zero_fmod={4:0}] [L185] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=7, one_fmod=1, x=3, y=4, Zero_fmod={4:0}] [L185] double res = fmod_double(x, y); [L188] COND TRUE res != x VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={4:0}] [L189] __VERIFIER_error() VAL [one_fmod=1, res=7, x=3, y=4, Zero_fmod={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 76 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 576 SizeOfPredicates, 0 NumberOfNonLiveVariables, 106 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...