/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 19:14:52,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 19:14:52,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 19:14:52,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 19:14:52,203 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 19:14:52,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 19:14:52,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 19:14:52,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 19:14:52,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 19:14:52,211 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 19:14:52,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 19:14:52,213 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 19:14:52,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 19:14:52,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 19:14:52,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 19:14:52,217 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 19:14:52,218 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 19:14:52,219 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 19:14:52,220 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 19:14:52,222 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 19:14:52,224 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 19:14:52,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 19:14:52,226 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 19:14:52,227 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 19:14:52,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 19:14:52,237 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 19:14:52,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 19:14:52,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 19:14:52,239 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 19:14:52,253 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 19:14:52,253 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 19:14:52,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 19:14:52,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 19:14:52,255 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 19:14:52,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 19:14:52,255 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 19:14:52,256 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 19:14:52,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 19:14:52,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 19:14:52,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 19:14:52,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 19:14:52,257 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 19:14:52,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 19:14:52,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 19:14:52,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 19:14:52,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 19:14:52,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 19:14:52,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 19:14:52,258 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 19:14:52,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 19:14:52,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 19:14:52,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 19:14:52,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 19:14:52,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 19:14:52,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 19:14:52,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:52,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 19:14:52,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 19:14:52,260 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 -> DAGSIZE 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 -> 2 [2020-07-21 19:14:52,602 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 19:14:52,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 19:14:52,628 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 19:14:52,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 19:14:52,632 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 19:14:52,632 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-21 19:14:52,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad850913d/05e22137a9bb4085848ed0e13784c863/FLAG7113def1c [2020-07-21 19:14:53,166 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 19:14:53,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1051.c [2020-07-21 19:14:53,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad850913d/05e22137a9bb4085848ed0e13784c863/FLAG7113def1c [2020-07-21 19:14:53,519 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad850913d/05e22137a9bb4085848ed0e13784c863 [2020-07-21 19:14:53,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 19:14:53,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 19:14:53,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:53,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 19:14:53,539 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 19:14:53,540 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4240d646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53, skipping insertion in model container [2020-07-21 19:14:53,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 19:14:53,574 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 19:14:53,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:53,793 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 19:14:53,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 19:14:53,925 INFO L208 MainTranslator]: Completed translation [2020-07-21 19:14:53,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53 WrapperNode [2020-07-21 19:14:53,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 19:14:53,927 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 19:14:53,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 19:14:53,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 19:14:53,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,977 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,979 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (1/1) ... [2020-07-21 19:14:53,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 19:14:53,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 19:14:53,983 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 19:14:53,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 19:14:53,984 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (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 19:14:54,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 19:14:54,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 19:14:54,051 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-21 19:14:54,051 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-21 19:14:54,052 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 19:14:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 19:14:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-21 19:14:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 19:14:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 19:14:54,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 19:14:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 19:14:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 19:14:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 19:14:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-21 19:14:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 19:14:54,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 19:14:54,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 19:14:54,415 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 19:14:54,415 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-21 19:14:54,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:54 BoogieIcfgContainer [2020-07-21 19:14:54,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 19:14:54,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 19:14:54,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 19:14:54,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 19:14:54,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 07:14:53" (1/3) ... [2020-07-21 19:14:54,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb7d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:54, skipping insertion in model container [2020-07-21 19:14:54,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 07:14:53" (2/3) ... [2020-07-21 19:14:54,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45eb7d51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 07:14:54, skipping insertion in model container [2020-07-21 19:14:54,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 07:14:54" (3/3) ... [2020-07-21 19:14:54,430 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-07-21 19:14:54,443 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 19:14:54,451 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 19:14:54,466 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 19:14:54,492 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 19:14:54,492 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 19:14:54,492 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 19:14:54,493 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 19:14:54,493 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 19:14:54,493 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 19:14:54,493 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 19:14:54,493 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 19:14:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2020-07-21 19:14:54,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 19:14:54,522 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:14:54,523 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 19:14:54,523 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:14:54,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:14:54,531 INFO L82 PathProgramCache]: Analyzing trace with hash 1635654302, now seen corresponding path program 1 times [2020-07-21 19:14:54,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:14:54,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784598501] [2020-07-21 19:14:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:54,646 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:14:54,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 19:14:54,649 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 19:14:54,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 19:14:54,693 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 19:14:54,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 19:14:54,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784598501] [2020-07-21 19:14:54,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 19:14:54,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 19:14:54,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754851219] [2020-07-21 19:14:54,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 19:14:54,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 19:14:54,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 19:14:54,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:14:54,725 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 2 states. [2020-07-21 19:14:54,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 19:14:54,754 INFO L93 Difference]: Finished difference Result 86 states and 124 transitions. [2020-07-21 19:14:54,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 19:14:54,755 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-07-21 19:14:54,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 19:14:54,767 INFO L225 Difference]: With dead ends: 86 [2020-07-21 19:14:54,768 INFO L226 Difference]: Without dead ends: 43 [2020-07-21 19:14:54,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 19:14:54,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-21 19:14:54,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-07-21 19:14:54,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-21 19:14:54,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 57 transitions. [2020-07-21 19:14:54,810 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 57 transitions. Word has length 23 [2020-07-21 19:14:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 19:14:54,811 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 57 transitions. [2020-07-21 19:14:54,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 19:14:54,812 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 57 transitions. [2020-07-21 19:14:54,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 19:14:54,813 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 19:14:54,813 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 19:14:55,018 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:55,018 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 19:14:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 19:14:55,020 INFO L82 PathProgramCache]: Analyzing trace with hash 744784661, now seen corresponding path program 1 times [2020-07-21 19:14:55,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 19:14:55,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410942550] [2020-07-21 19:14:55,022 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:55,104 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 19:14:55,104 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-21 19:14:55,105 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 19:14:55,126 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 19:14:55,152 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 19:14:55,153 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 19:14:55,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 19:14:55,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 07:14:55 BoogieIcfgContainer [2020-07-21 19:14:55,403 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 19:14:55,406 INFO L168 Benchmark]: Toolchain (without parser) took 1874.17 ms. Allocated memory was 136.8 MB in the beginning and 198.2 MB in the end (delta: 61.3 MB). Free memory was 101.4 MB in the beginning and 110.0 MB in the end (delta: -8.6 MB). Peak memory consumption was 52.7 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:55,407 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 19:14:55,408 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.44 ms. Allocated memory was 136.8 MB in the beginning and 198.2 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 177.1 MB in the end (delta: -76.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:55,408 INFO L168 Benchmark]: Boogie Preprocessor took 55.41 ms. Allocated memory is still 198.2 MB. Free memory was 177.1 MB in the beginning and 174.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:55,409 INFO L168 Benchmark]: RCFGBuilder took 438.03 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 152.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:55,410 INFO L168 Benchmark]: TraceAbstraction took 981.05 ms. Allocated memory is still 198.2 MB. Free memory was 151.9 MB in the beginning and 110.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. [2020-07-21 19:14:55,414 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.43 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 391.44 ms. Allocated memory was 136.8 MB in the beginning and 198.2 MB in the end (delta: 61.3 MB). Free memory was 101.0 MB in the beginning and 177.1 MB in the end (delta: -76.1 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 55.41 ms. Allocated memory is still 198.2 MB. Free memory was 177.1 MB in the beginning and 174.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 438.03 ms. Allocated memory is still 198.2 MB. Free memory was 174.5 MB in the beginning and 152.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 981.05 ms. Allocated memory is still 198.2 MB. Free memory was 151.9 MB in the beginning and 110.0 MB in the end (delta: 41.9 MB). Peak memory consumption was 41.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of shiftRight at line 37, overapproximation of bitwiseOr at line 38, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 80. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L88] double x = 0.0 / 0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L89] CALL, EXPR floor_double(x) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=0, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=0, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=0, j0=0, x=4] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=4, \result=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=0, j0=0, x=4] [L89] RET, EXPR floor_double(x) VAL [floor_double(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L89] double res = floor_double(x); [L92] CALL, EXPR isnan_double(res) VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L80] return x != x; VAL [\old(x)=4, \result=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L92] RET, EXPR isnan_double(res) VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, isnan_double(res)=0, res=4, x=4] [L92] COND TRUE !isnan_double(res) [L93] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 47 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 484 SizeOfPredicates, 0 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...