/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --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 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -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 0.1.25-79ed534 [2020-07-20 03:19:19,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:19:19,437 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:19:19,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:19:19,457 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:19:19,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:19:19,461 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:19:19,471 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:19:19,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:19:19,479 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:19:19,480 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:19:19,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:19:19,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:19:19,485 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:19:19,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:19:19,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:19:19,489 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:19:19,490 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:19:19,492 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:19:19,497 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:19:19,502 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:19:19,505 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:19:19,506 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:19:19,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:19:19,509 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:19:19,518 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:19:19,519 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:19:19,520 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:19:19,521 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 03:19:19,552 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:19:19,552 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:19:19,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:19:19,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:19:19,554 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:19:19,554 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:19:19,555 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:19:19,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:19:19,555 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:19:19,555 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:19:19,555 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:19:19,555 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:19:19,556 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:19:19,556 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:19:19,556 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:19:19,556 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:19:19,556 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:19:19,557 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:19:19,557 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:19:19,557 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:19:19,557 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:19:19,557 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:19:19,558 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:19:19,558 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:19:19,558 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:19:19,558 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:19:19,558 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:19:19,558 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:19:19,559 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:19:19,559 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:19:19,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:19:19,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:19:19,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:19:19,865 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:19:19,865 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:19:19,866 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-20 03:19:19,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6c20fba/3b31d7b8460c45baac181706a9f4bf44/FLAGfac77a841 [2020-07-20 03:19:20,372 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:19:20,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1052c.c [2020-07-20 03:19:20,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6c20fba/3b31d7b8460c45baac181706a9f4bf44/FLAGfac77a841 [2020-07-20 03:19:20,713 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f6c20fba/3b31d7b8460c45baac181706a9f4bf44 [2020-07-20 03:19:20,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:19:20,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:19:20,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:20,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:19:20,732 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:19:20,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:20" (1/1) ... [2020-07-20 03:19:20,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14736f9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:20, skipping insertion in model container [2020-07-20 03:19:20,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:19:20" (1/1) ... [2020-07-20 03:19:20,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:19:20,765 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:19:20,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:20,956 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:19:21,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:19:21,117 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:19:21,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21 WrapperNode [2020-07-20 03:19:21,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:19:21,118 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:19:21,118 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:19:21,118 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:19:21,128 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (1/1) ... [2020-07-20 03:19:21,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (1/1) ... [2020-07-20 03:19:21,138 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (1/1) ... [2020-07-20 03:19:21,139 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (1/1) ... [2020-07-20 03:19:21,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (1/1) ... [2020-07-20 03:19:21,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (1/1) ... [2020-07-20 03:19:21,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (1/1) ... [2020-07-20 03:19:21,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:19:21,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:19:21,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:19:21,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:19:21,176 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (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 03:19:21,230 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:19:21,231 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:19:21,231 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-07-20 03:19:21,231 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-07-20 03:19:21,231 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:19:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:19:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-07-20 03:19:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:19:21,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-20 03:19:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:19:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:19:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:19:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-20 03:19:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-07-20 03:19:21,232 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:19:21,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:19:21,233 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:19:21,603 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:19:21,603 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-20 03:19:21,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:21 BoogieIcfgContainer [2020-07-20 03:19:21,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:19:21,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:19:21,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:19:21,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:19:21,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:19:20" (1/3) ... [2020-07-20 03:19:21,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369720e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:21, skipping insertion in model container [2020-07-20 03:19:21,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:19:21" (2/3) ... [2020-07-20 03:19:21,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@369720e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:19:21, skipping insertion in model container [2020-07-20 03:19:21,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:19:21" (3/3) ... [2020-07-20 03:19:21,617 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-07-20 03:19:21,628 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:19:21,636 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:19:21,651 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:19:21,676 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:19:21,677 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:19:21,677 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:19:21,677 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:19:21,677 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:19:21,677 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:19:21,677 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:19:21,677 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:19:21,695 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-07-20 03:19:21,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 03:19:21,701 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:21,702 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 03:19:21,703 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:21,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:21,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1202696015, now seen corresponding path program 1 times [2020-07-20 03:19:21,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:21,716 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721813876] [2020-07-20 03:19:21,717 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c48f092 [2020-07-20 03:19:21,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:21,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:19:21,945 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 03:19:21,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721813876] [2020-07-20 03:19:21,952 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:19:21,952 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 03:19:21,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570347954] [2020-07-20 03:19:21,960 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 03:19:21,961 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:19:21,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 03:19:21,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 03:19:21,978 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 4 states. [2020-07-20 03:19:22,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:19:22,217 INFO L93 Difference]: Finished difference Result 94 states and 139 transitions. [2020-07-20 03:19:22,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 03:19:22,219 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-20 03:19:22,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:19:22,231 INFO L225 Difference]: With dead ends: 94 [2020-07-20 03:19:22,231 INFO L226 Difference]: Without dead ends: 47 [2020-07-20 03:19:22,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 03:19:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-07-20 03:19:22,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-07-20 03:19:22,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 03:19:22,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 62 transitions. [2020-07-20 03:19:22,284 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 62 transitions. Word has length 19 [2020-07-20 03:19:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:19:22,284 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 62 transitions. [2020-07-20 03:19:22,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 03:19:22,285 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 62 transitions. [2020-07-20 03:19:22,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-20 03:19:22,286 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:19:22,286 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 03:19:22,287 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:19:22,287 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:19:22,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:19:22,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1688222156, now seen corresponding path program 1 times [2020-07-20 03:19:22,288 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:19:22,289 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587727465] [2020-07-20 03:19:22,289 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5c48f092 [2020-07-20 03:19:22,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:22,391 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:22,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 03:19:22,444 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 03:19:22,493 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-20 03:19:22,494 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 03:19:22,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 03:19:22,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:19:22 BoogieIcfgContainer [2020-07-20 03:19:22,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:19:22,576 INFO L168 Benchmark]: Toolchain (without parser) took 1851.13 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.6 MB in the beginning and 102.1 MB in the end (delta: 590.0 kB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:22,578 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 03:19:22,581 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.30 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 182.1 MB in the end (delta: -79.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:22,582 INFO L168 Benchmark]: Boogie Preprocessor took 56.75 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 179.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:22,584 INFO L168 Benchmark]: RCFGBuilder took 433.72 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 155.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:22,585 INFO L168 Benchmark]: TraceAbstraction took 962.75 ms. Allocated memory is still 203.9 MB. Free memory was 154.9 MB in the beginning and 102.1 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2020-07-20 03:19:22,597 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 389.30 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 102.4 MB in the beginning and 182.1 MB in the end (delta: -79.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 56.75 ms. Allocated memory is still 203.9 MB. Free memory was 182.1 MB in the beginning and 179.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 433.72 ms. Allocated memory is still 203.9 MB. Free memory was 179.5 MB in the beginning and 155.5 MB in the end (delta: 24.0 MB). Peak memory consumption was 24.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 962.75 ms. Allocated memory is still 203.9 MB. Free memory was 154.9 MB in the beginning and 102.1 MB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 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)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L98] double x = -0.0; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L99] CALL, EXPR floor_double(x) VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [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)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L26] COND TRUE j0 < 20 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L27] COND FALSE !(j0 < 0) [L37] i = (0x000fffff) >> j0 VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L38] COND TRUE ((i0 & i) | i1) == 0 [L39] return x; VAL [\old(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, \result=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, i0=0, i1=-1, j0=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L99] RET, EXPR floor_double(x) VAL [floor_double(x)=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L99] double res = floor_double(x); [L102] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, res == -0.0 && __signbit_double(res) == 1=0, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] [L102] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L103] __VERIFIER_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, res=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007, x=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000007] - 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: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 55 SDslu, 5 SDs, 0 SdLazy, 65 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 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, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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...