/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_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 10:39:50,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 10:39:50,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 10:39:50,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 10:39:50,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 10:39:50,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 10:39:50,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 10:39:50,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 10:39:50,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 10:39:50,285 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 10:39:50,286 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 10:39:50,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 10:39:50,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 10:39:50,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 10:39:50,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 10:39:50,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 10:39:50,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 10:39:50,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 10:39:50,294 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 10:39:50,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 10:39:50,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 10:39:50,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 10:39:50,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 10:39:50,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 10:39:50,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 10:39:50,311 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 10:39:50,312 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 10:39:50,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 10:39:50,314 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 10:39:50,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 10:39:50,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 10:39:50,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 10:39:50,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 10:39:50,330 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 10:39:50,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 10:39:50,331 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 10:39:50,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 10:39:50,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 10:39:50,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 10:39:50,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 10:39:50,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 10:39:50,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 10:39:50,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 10:39:50,332 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 10:39:50,332 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 10:39:50,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 10:39:50,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 10:39:50,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 10:39:50,333 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 10:39:50,333 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 10:39:50,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 10:39:50,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 10:39:50,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 10:39:50,334 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 10:39:50,334 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 10:39:50,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:50,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 10:39:50,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 10:39:50,335 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 10:39:50,614 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 10:39:50,631 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 10:39:50,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 10:39:50,636 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 10:39:50,638 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 10:39:50,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-21 10:39:50,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/978479cd5/77c0c150353742c4a6dbb27d42e4b463/FLAGd317d568c [2020-07-21 10:39:51,196 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 10:39:51,196 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-21 10:39:51,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/978479cd5/77c0c150353742c4a6dbb27d42e4b463/FLAGd317d568c [2020-07-21 10:39:51,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/978479cd5/77c0c150353742c4a6dbb27d42e4b463 [2020-07-21 10:39:51,575 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 10:39:51,578 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 10:39:51,580 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:51,580 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 10:39:51,583 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 10:39:51,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:51,588 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e161a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51, skipping insertion in model container [2020-07-21 10:39:51,588 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:51,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 10:39:51,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 10:39:51,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:51,843 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 10:39:51,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 10:39:51,987 INFO L208 MainTranslator]: Completed translation [2020-07-21 10:39:51,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51 WrapperNode [2020-07-21 10:39:51,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 10:39:51,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 10:39:51,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 10:39:51,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 10:39:52,000 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:52,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:52,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:52,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:52,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:52,056 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:52,058 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (1/1) ... [2020-07-21 10:39:52,061 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 10:39:52,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 10:39:52,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 10:39:52,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 10:39:52,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (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 10:39:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 10:39:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 10:39:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-21 10:39:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-21 10:39:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 10:39:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 10:39:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-21 10:39:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 10:39:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 10:39:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-21 10:39:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 10:39:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-21 10:39:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 10:39:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-21 10:39:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 10:39:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 10:39:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 10:39:52,490 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 10:39:52,491 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-21 10:39:52,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:52 BoogieIcfgContainer [2020-07-21 10:39:52,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 10:39:52,496 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 10:39:52,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 10:39:52,501 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 10:39:52,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 10:39:51" (1/3) ... [2020-07-21 10:39:52,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afa218c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:52, skipping insertion in model container [2020-07-21 10:39:52,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 10:39:51" (2/3) ... [2020-07-21 10:39:52,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afa218c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 10:39:52, skipping insertion in model container [2020-07-21 10:39:52,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 10:39:52" (3/3) ... [2020-07-21 10:39:52,505 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-07-21 10:39:52,519 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 10:39:52,529 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 10:39:52,547 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 10:39:52,576 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 10:39:52,577 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 10:39:52,577 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 10:39:52,577 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 10:39:52,577 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 10:39:52,578 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 10:39:52,578 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 10:39:52,578 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 10:39:52,611 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-21 10:39:52,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 10:39:52,619 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:52,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 10:39:52,620 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:52,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:52,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-07-21 10:39:52,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:52,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581118349] [2020-07-21 10:39:52,640 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 10:39:52,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 10:39:52,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 10:39:52,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 10:39:52,797 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 10:39:52,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 10:39:52,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581118349] [2020-07-21 10:39:52,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 10:39:52,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 10:39:52,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375118749] [2020-07-21 10:39:52,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 10:39:52,808 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 10:39:52,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 10:39:52,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 10:39:52,825 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-07-21 10:39:52,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 10:39:52,855 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-07-21 10:39:52,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 10:39:52,857 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-21 10:39:52,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 10:39:52,868 INFO L225 Difference]: With dead ends: 94 [2020-07-21 10:39:52,868 INFO L226 Difference]: Without dead ends: 47 [2020-07-21 10:39:52,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 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 10:39:52,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-21 10:39:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-21 10:39:52,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-21 10:39:52,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-07-21 10:39:52,918 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-07-21 10:39:52,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 10:39:52,919 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-07-21 10:39:52,919 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 10:39:52,920 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-07-21 10:39:52,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 10:39:52,921 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 10:39:52,921 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] [2020-07-21 10:39:53,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:53,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 10:39:53,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 10:39:53,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-07-21 10:39:53,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 10:39:53,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474629208] [2020-07-21 10:39:53,140 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 10:39:53,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:53,199 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-21 10:39:53,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-21 10:39:53,242 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-21 10:39:53,242 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-21 10:39:53,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 10:39:53,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 10:39:53 BoogieIcfgContainer [2020-07-21 10:39:53,491 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 10:39:53,494 INFO L168 Benchmark]: Toolchain (without parser) took 1916.15 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 100.9 MB in the beginning and 112.6 MB in the end (delta: -11.7 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:53,495 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 10:39:53,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.15 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 178.9 MB in the end (delta: -78.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:53,497 INFO L168 Benchmark]: Boogie Preprocessor took 73.07 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 176.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:53,498 INFO L168 Benchmark]: RCFGBuilder took 433.68 ms. Allocated memory is still 200.8 MB. Free memory was 176.4 MB in the beginning and 152.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:53,498 INFO L168 Benchmark]: TraceAbstraction took 994.52 ms. Allocated memory is still 200.8 MB. Free memory was 152.6 MB in the beginning and 112.6 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. [2020-07-21 10:39:53,503 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 408.15 ms. Allocated memory was 136.3 MB in the beginning and 200.8 MB in the end (delta: 64.5 MB). Free memory was 100.5 MB in the beginning and 178.9 MB in the end (delta: -78.4 MB). Peak memory consumption was 24.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.07 ms. Allocated memory is still 200.8 MB. Free memory was 178.9 MB in the beginning and 176.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.68 ms. Allocated memory is still 200.8 MB. Free memory was 176.4 MB in the beginning and 152.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 994.52 ms. Allocated memory is still 200.8 MB. Free memory was 152.6 MB in the beginning and 112.6 MB in the end (delta: 40.0 MB). Peak memory consumption was 40.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 103]: 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 someUnaryDOUBLEoperation at line 98, overapproximation of bitwiseAnd at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 102. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; VAL [\old(huge_floor)=0, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] 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=2147483647, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=2147483647, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=2147483647, i1=2147483647, 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=2147483647, j0=0, x=4] [L99] RET, EXPR floor_double(x) VAL [floor_double(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, res == -0.0 && __signbit_double(res) == 1=0, x=4] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=4, x=4] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 51 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: 66 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 65 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...