/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 NUM_FUNCTIONS --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_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 23:01:25,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 23:01:25,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 23:01:25,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 23:01:25,706 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 23:01:25,707 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 23:01:25,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 23:01:25,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 23:01:25,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 23:01:25,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 23:01:25,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 23:01:25,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 23:01:25,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 23:01:25,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 23:01:25,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 23:01:25,718 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 23:01:25,719 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 23:01:25,720 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 23:01:25,722 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 23:01:25,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 23:01:25,725 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 23:01:25,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 23:01:25,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 23:01:25,728 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 23:01:25,730 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-19 23:01:25,738 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 23:01:25,739 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 23:01:25,740 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 23:01:25,740 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 [2020-07-19 23:01:25,755 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 23:01:25,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 23:01:25,756 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 23:01:25,756 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 23:01:25,757 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 23:01:25,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 23:01:25,757 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 23:01:25,757 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 23:01:25,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 23:01:25,758 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 23:01:25,758 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 23:01:25,758 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 23:01:25,758 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 23:01:25,759 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 23:01:25,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 23:01:25,759 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 23:01:25,759 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 23:01:25,759 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 23:01:25,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 23:01:25,760 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 23:01:25,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 23:01:25,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 23:01:25,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 23:01:25,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 23:01:25,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 23:01:25,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 23:01:25,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 23:01:25,762 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 23:01:25,762 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 23:01:25,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS 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 [2020-07-19 23:01:26,036 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 23:01:26,050 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 23:01:26,053 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 23:01:26,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 23:01:26,056 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 23:01:26,056 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-07-19 23:01:26,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee34ad011/28cacff3662548d9ace8cb01e7d3db12/FLAGbb3be066f [2020-07-19 23:01:26,584 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 23:01:26,585 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-07-19 23:01:26,595 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee34ad011/28cacff3662548d9ace8cb01e7d3db12/FLAGbb3be066f [2020-07-19 23:01:26,982 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee34ad011/28cacff3662548d9ace8cb01e7d3db12 [2020-07-19 23:01:26,993 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 23:01:26,996 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 23:01:26,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 23:01:26,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 23:01:27,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 23:01:27,002 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:01:26" (1/1) ... [2020-07-19 23:01:27,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ea35046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27, skipping insertion in model container [2020-07-19 23:01:27,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 11:01:26" (1/1) ... [2020-07-19 23:01:27,013 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 23:01:27,033 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 23:01:27,214 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:01:27,218 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 23:01:27,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 23:01:27,358 INFO L208 MainTranslator]: Completed translation [2020-07-19 23:01:27,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27 WrapperNode [2020-07-19 23:01:27,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 23:01:27,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 23:01:27,360 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 23:01:27,360 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 23:01:27,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (1/1) ... [2020-07-19 23:01:27,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (1/1) ... [2020-07-19 23:01:27,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (1/1) ... [2020-07-19 23:01:27,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (1/1) ... [2020-07-19 23:01:27,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (1/1) ... [2020-07-19 23:01:27,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (1/1) ... [2020-07-19 23:01:27,406 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (1/1) ... [2020-07-19 23:01:27,409 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 23:01:27,410 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 23:01:27,410 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 23:01:27,410 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 23:01:27,411 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (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 [2020-07-19 23:01:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 23:01:27,477 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 23:01:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-19 23:01:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-07-19 23:01:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-07-19 23:01:27,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 23:01:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 23:01:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-19 23:01:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-07-19 23:01:27,479 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-19 23:01:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-19 23:01:27,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-19 23:01:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-19 23:01:27,481 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-19 23:01:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-19 23:01:27,482 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-07-19 23:01:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 23:01:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 23:01:27,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 23:01:27,926 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 23:01:27,926 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-07-19 23:01:27,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:01:27 BoogieIcfgContainer [2020-07-19 23:01:27,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 23:01:27,931 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 23:01:27,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 23:01:27,935 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 23:01:27,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 11:01:26" (1/3) ... [2020-07-19 23:01:27,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3d415c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:01:27, skipping insertion in model container [2020-07-19 23:01:27,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 11:01:27" (2/3) ... [2020-07-19 23:01:27,936 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e3d415c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 11:01:27, skipping insertion in model container [2020-07-19 23:01:27,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 11:01:27" (3/3) ... [2020-07-19 23:01:27,938 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-07-19 23:01:27,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 23:01:27,957 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 23:01:27,968 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 23:01:27,989 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 23:01:27,989 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 23:01:27,989 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 23:01:27,989 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 23:01:27,989 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 23:01:27,989 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 23:01:27,990 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 23:01:27,990 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 23:01:28,009 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-19 23:01:28,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-19 23:01:28,015 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:01:28,016 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:01:28,017 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:01:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:01:28,022 INFO L82 PathProgramCache]: Analyzing trace with hash -48260949, now seen corresponding path program 1 times [2020-07-19 23:01:28,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:01:28,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439653982] [2020-07-19 23:01:28,030 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225e40d0 [2020-07-19 23:01:28,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:01:28,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:01:28,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:01:28,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 23:01:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 23:01:28,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439653982] [2020-07-19 23:01:28,261 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 23:01:28,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-19 23:01:28,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584137347] [2020-07-19 23:01:28,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-19 23:01:28,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-19 23:01:28,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-19 23:01:28,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-19 23:01:28,291 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 4 states. [2020-07-19 23:01:28,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 23:01:28,501 INFO L93 Difference]: Finished difference Result 72 states and 101 transitions. [2020-07-19 23:01:28,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-19 23:01:28,503 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-07-19 23:01:28,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 23:01:28,514 INFO L225 Difference]: With dead ends: 72 [2020-07-19 23:01:28,515 INFO L226 Difference]: Without dead ends: 36 [2020-07-19 23:01:28,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-19 23:01:28,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-19 23:01:28,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-19 23:01:28,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-19 23:01:28,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-07-19 23:01:28,560 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 25 [2020-07-19 23:01:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 23:01:28,560 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-07-19 23:01:28,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-19 23:01:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-07-19 23:01:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-19 23:01:28,562 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 23:01:28,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 23:01:28,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 23:01:28,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 23:01:28,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 23:01:28,564 INFO L82 PathProgramCache]: Analyzing trace with hash -1916763246, now seen corresponding path program 1 times [2020-07-19 23:01:28,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-19 23:01:28,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126647877] [2020-07-19 23:01:28,564 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225e40d0 [2020-07-19 23:01:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:01:28,792 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:01:28,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-19 23:01:28,880 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-19 23:01:28,910 INFO L174 FreeRefinementEngine]: Strategy CAMEL_SMT_AM found a feasible trace [2020-07-19 23:01:28,911 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-19 23:01:28,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 23:01:28,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 11:01:28 BoogieIcfgContainer [2020-07-19 23:01:28,948 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 23:01:28,951 INFO L168 Benchmark]: Toolchain (without parser) took 1955.74 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 101.2 MB in the beginning and 95.9 MB in the end (delta: 5.3 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:28,952 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-19 23:01:28,953 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.11 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 179.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:28,954 INFO L168 Benchmark]: Boogie Preprocessor took 49.73 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:28,955 INFO L168 Benchmark]: RCFGBuilder took 520.73 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 152.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:28,956 INFO L168 Benchmark]: TraceAbstraction took 1016.93 ms. Allocated memory is still 201.3 MB. Free memory was 151.6 MB in the beginning and 95.9 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. [2020-07-19 23:01:28,960 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 143.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 362.11 ms. Allocated memory was 143.7 MB in the beginning and 201.3 MB in the end (delta: 57.7 MB). Free memory was 100.8 MB in the beginning and 179.5 MB in the end (delta: -78.8 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 49.73 ms. Allocated memory is still 201.3 MB. Free memory was 179.5 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 520.73 ms. Allocated memory is still 201.3 MB. Free memory was 177.0 MB in the beginning and 152.3 MB in the end (delta: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1016.93 ms. Allocated memory is still 201.3 MB. Free memory was 151.6 MB in the beginning and 95.9 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 72, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) VAL [\old(x)=12884901888] [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; VAL [\old(x)=12884901888, x=12884901888] [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=12884901888, exponent_less_1023=1024, lsw=10, msw=-1, signbit=-2, x=12884901888] [L30] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=12884901888, exponent_less_1023=1024, lsw=10, msw=-1, signbit=-2, x=12884901888] [L47] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=12884901888, exponent_less_1023=1024, lsw=10, msw=-1, signbit=-2, x=12884901888] [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; VAL [\old(x)=12884901888, exponent_less_1023=1024, lsw=10, msw=-1, signbit=-2, x=12884901888] [L85] RET, EXPR trunc_double(x) VAL [trunc_double(x)=12884901891, x=12884901888] [L85] double res = trunc_double(x); [L88] CALL, EXPR isinf_double(res) VAL [\old(x)=12884901891] [L64] __int32_t hx, lx; VAL [\old(x)=12884901891, x=12884901891] [L66] ieee_double_shape_type ew_u; [L67] ew_u.value = (x) [L68] EXPR ew_u.parts.msw [L68] (hx) = ew_u.parts.msw [L69] EXPR ew_u.parts.lsw [L69] (lx) = ew_u.parts.lsw [L71] hx &= 0x7fffffff [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L73] hx = 0x7ff00000 - hx [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=12884901891, \result=0, hx=2146435072, lx=-1, x=12884901891] [L88] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=12884901891, x=12884901888] [L88] COND TRUE !isinf_double(res) [L89] __VERIFIER_error() VAL [res=12884901891, x=12884901888] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 35 SDtfs, 30 SDslu, 5 SDs, 0 SdLazy, 44 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1368 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...