/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 16:27:25,831 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 16:27:25,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 16:27:25,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 16:27:25,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 16:27:25,847 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 16:27:25,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 16:27:25,851 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 16:27:25,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 16:27:25,853 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 16:27:25,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 16:27:25,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 16:27:25,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 16:27:25,857 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 16:27:25,858 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 16:27:25,859 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 16:27:25,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 16:27:25,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 16:27:25,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 16:27:25,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 16:27:25,866 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 16:27:25,867 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 16:27:25,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 16:27:25,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 16:27:25,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 16:27:25,879 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 16:27:25,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 16:27:25,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 16:27:25,882 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 16:27:25,897 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 16:27:25,897 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 16:27:25,902 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 16:27:25,902 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 16:27:25,902 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 16:27:25,902 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 16:27:25,902 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 16:27:25,902 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 16:27:25,903 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 16:27:25,903 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 16:27:25,903 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 16:27:25,903 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 16:27:25,903 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 16:27:25,903 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 16:27:25,904 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 16:27:25,904 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 16:27:25,904 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 16:27:25,904 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 16:27:25,905 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 16:27:25,905 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 16:27:25,905 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 16:27:25,905 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 16:27:25,905 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 16:27:25,906 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 16:27:25,906 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 16:27:25,906 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 16:27:25,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:25,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 16:27:25,907 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 16:27:25,907 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 16:27:26,180 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 16:27:26,194 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 16:27:26,198 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 16:27:26,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 16:27:26,200 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 16:27:26,201 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-20 16:27:26,271 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898f4ef6a/e344d40cbf7943d685111fc8b2d57b1f/FLAGf441c5ce2 [2020-07-20 16:27:26,729 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 16:27:26,729 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-20 16:27:26,736 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898f4ef6a/e344d40cbf7943d685111fc8b2d57b1f/FLAGf441c5ce2 [2020-07-20 16:27:27,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/898f4ef6a/e344d40cbf7943d685111fc8b2d57b1f [2020-07-20 16:27:27,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 16:27:27,121 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 16:27:27,122 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:27,122 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 16:27:27,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 16:27:27,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49c5f245 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27, skipping insertion in model container [2020-07-20 16:27:27,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 16:27:27,158 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 16:27:27,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:27,355 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 16:27:27,474 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 16:27:27,500 INFO L208 MainTranslator]: Completed translation [2020-07-20 16:27:27,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27 WrapperNode [2020-07-20 16:27:27,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 16:27:27,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 16:27:27,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 16:27:27,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 16:27:27,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,524 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,556 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (1/1) ... [2020-07-20 16:27:27,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 16:27:27,565 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 16:27:27,565 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 16:27:27,565 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 16:27:27,566 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (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 16:27:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 16:27:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 16:27:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-20 16:27:27,628 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 16:27:27,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 16:27:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 16:27:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-20 16:27:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 16:27:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 16:27:27,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 16:27:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 16:27:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 16:27:27,631 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 16:27:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 16:27:27,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 16:27:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 16:27:27,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 16:27:27,994 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 16:27:27,994 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 16:27:28,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:28 BoogieIcfgContainer [2020-07-20 16:27:28,000 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 16:27:28,002 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 16:27:28,002 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 16:27:28,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 16:27:28,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 04:27:27" (1/3) ... [2020-07-20 16:27:28,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6647e074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:28, skipping insertion in model container [2020-07-20 16:27:28,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 04:27:27" (2/3) ... [2020-07-20 16:27:28,007 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6647e074 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 04:27:28, skipping insertion in model container [2020-07-20 16:27:28,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 04:27:28" (3/3) ... [2020-07-20 16:27:28,009 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-07-20 16:27:28,021 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 16:27:28,030 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 16:27:28,049 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 16:27:28,077 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 16:27:28,078 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 16:27:28,078 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 16:27:28,078 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 16:27:28,078 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 16:27:28,078 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 16:27:28,079 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 16:27:28,079 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 16:27:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-20 16:27:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 16:27:28,110 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:28,111 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 16:27:28,111 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:28,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:28,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-07-20 16:27:28,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:28,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [138373262] [2020-07-20 16:27:28,129 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:28,274 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 16:27:28,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 16:27:28,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 16:27:28,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 16:27:28,307 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 16:27:28,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 16:27:28,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [138373262] [2020-07-20 16:27:28,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 16:27:28,310 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 16:27:28,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326675725] [2020-07-20 16:27:28,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 16:27:28,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 16:27:28,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 16:27:28,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 16:27:28,337 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-07-20 16:27:28,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 16:27:28,364 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-07-20 16:27:28,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 16:27:28,366 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2020-07-20 16:27:28,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 16:27:28,377 INFO L225 Difference]: With dead ends: 94 [2020-07-20 16:27:28,377 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 16:27:28,381 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 [2020-07-20 16:27:28,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 16:27:28,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-20 16:27:28,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 16:27:28,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-07-20 16:27:28,425 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-07-20 16:27:28,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 16:27:28,425 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-07-20 16:27:28,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 16:27:28,426 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-07-20 16:27:28,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 16:27:28,427 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 16:27:28,427 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] [2020-07-20 16:27:28,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:28,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 16:27:28,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 16:27:28,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-07-20 16:27:28,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 16:27:28,647 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916895228] [2020-07-20 16:27:28,647 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:28,721 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 16:27:28,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 16:27:28,722 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 16:27:28,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 16:27:28,765 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 16:27:28,766 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 16:27:28,981 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 16:27:29,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 04:27:29 BoogieIcfgContainer [2020-07-20 16:27:29,017 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 16:27:29,020 INFO L168 Benchmark]: Toolchain (without parser) took 1898.36 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 99.4 MB in the beginning and 109.6 MB in the end (delta: -10.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:29,022 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 16:27:29,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.36 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 98.9 MB in the beginning and 178.1 MB in the end (delta: -79.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:29,024 INFO L168 Benchmark]: Boogie Preprocessor took 62.04 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 176.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:29,025 INFO L168 Benchmark]: RCFGBuilder took 435.76 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 151.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:29,026 INFO L168 Benchmark]: TraceAbstraction took 1015.16 ms. Allocated memory is still 200.3 MB. Free memory was 151.0 MB in the beginning and 109.6 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-07-20 16:27:29,031 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 135.8 MB. Free memory was 118.8 MB in the beginning and 118.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.36 ms. Allocated memory was 135.8 MB in the beginning and 200.3 MB in the end (delta: 64.5 MB). Free memory was 98.9 MB in the beginning and 178.1 MB in the end (delta: -79.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.04 ms. Allocated memory is still 200.3 MB. Free memory was 178.1 MB in the beginning and 176.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.76 ms. Allocated memory is still 200.3 MB. Free memory was 176.0 MB in the beginning and 151.7 MB in the end (delta: 24.3 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1015.16 ms. Allocated memory is still 200.3 MB. Free memory was 151.0 MB in the beginning and 109.6 MB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 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=21238, i1=0, x=4] [L26] COND TRUE j0 < 20 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=21238, i1=0, j0=0, x=4] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=4, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=21238, 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=21238, i1=0, 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: 0.9s, 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, 35 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 324 SizeOfPredicates, 0 NumberOfNonLiveVariables, 61 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...