/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:08,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:08,868 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:08,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:08,911 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:08,913 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:08,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:08,918 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:08,920 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:08,921 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:08,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:08,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:08,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:08,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:08,928 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:08,929 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:08,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:08,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:08,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:08,936 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:08,939 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:08,940 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:08,942 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:08,943 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:08,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:08,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:08,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:08,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:08,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:09,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:09,042 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:09,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:09,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:09,047 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:09,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:09,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:09,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:09,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:09,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:09,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:09,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:09,050 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:09,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:09,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:09,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:09,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:09,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:09,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:09,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:09,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:09,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:09,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:09,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:09,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:09,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:09,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:09,562 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:09,565 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:09,566 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:09,567 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:09,568 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-12-22 03:46:09,656 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edbd1eb0/676b2bc9c456408787641e42fe44383b/FLAGcb0f98c65 [2020-12-22 03:46:10,236 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:10,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c [2020-12-22 03:46:10,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edbd1eb0/676b2bc9c456408787641e42fe44383b/FLAGcb0f98c65 [2020-12-22 03:46:10,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0edbd1eb0/676b2bc9c456408787641e42fe44383b [2020-12-22 03:46:10,599 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:10,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:10,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:10,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:10,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:10,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@600109d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10, skipping insertion in model container [2020-12-22 03:46:10,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:10,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:10,830 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c[2271,2284] [2020-12-22 03:46:10,834 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:10,845 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:10,882 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1052c.c[2271,2284] [2020-12-22 03:46:10,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:10,902 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:10,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10 WrapperNode [2020-12-22 03:46:10,903 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:10,904 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:10,905 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:10,905 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:10,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,926 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,954 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:10,955 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:10,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:10,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:10,967 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,968 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,971 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (1/1) ... [2020-12-22 03:46:10,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:10,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:10,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:10,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:10,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (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 [2020-12-22 03:46:11,103 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:11,103 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:11,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:11,637 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:11,637 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 03:46:11,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:11 BoogieIcfgContainer [2020-12-22 03:46:11,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:11,641 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:11,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:11,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:11,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:10" (1/3) ... [2020-12-22 03:46:11,650 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3084eeab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:11, skipping insertion in model container [2020-12-22 03:46:11,650 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:10" (2/3) ... [2020-12-22 03:46:11,651 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3084eeab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:11, skipping insertion in model container [2020-12-22 03:46:11,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:11" (3/3) ... [2020-12-22 03:46:11,653 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052c.c [2020-12-22 03:46:11,660 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:11,666 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:11,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:11,727 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:11,727 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:11,727 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:11,728 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:11,728 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:11,728 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:11,728 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:11,728 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:11,746 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-12-22 03:46:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 03:46:11,753 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:11,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:11,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:11,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:11,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1930029915, now seen corresponding path program 1 times [2020-12-22 03:46:11,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:11,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843603215] [2020-12-22 03:46:11,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:11,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:11,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:46:11,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843603215] [2020-12-22 03:46:11,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:11,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:11,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39757596] [2020-12-22 03:46:11,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:11,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:11,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:11,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:11,972 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 2 states. [2020-12-22 03:46:11,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:11,996 INFO L93 Difference]: Finished difference Result 74 states and 118 transitions. [2020-12-22 03:46:11,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:11,997 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-22 03:46:11,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:12,009 INFO L225 Difference]: With dead ends: 74 [2020-12-22 03:46:12,009 INFO L226 Difference]: Without dead ends: 35 [2020-12-22 03:46:12,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-22 03:46:12,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-22 03:46:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-22 03:46:12,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 50 transitions. [2020-12-22 03:46:12,068 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 50 transitions. Word has length 11 [2020-12-22 03:46:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:12,069 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 50 transitions. [2020-12-22 03:46:12,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 50 transitions. [2020-12-22 03:46:12,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 03:46:12,073 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:12,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:12,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:12,074 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:12,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:12,078 INFO L82 PathProgramCache]: Analyzing trace with hash -1310108990, now seen corresponding path program 1 times [2020-12-22 03:46:12,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:12,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466650491] [2020-12-22 03:46:12,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:12,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:12,181 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:12,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:12,253 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:12,298 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:12,298 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:12,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:12,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:12 BoogieIcfgContainer [2020-12-22 03:46:12,351 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:12,352 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:12,352 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:12,352 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:12,353 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:11" (3/4) ... [2020-12-22 03:46:12,357 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:12,357 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:12,362 INFO L168 Benchmark]: Toolchain (without parser) took 1756.86 ms. Allocated memory is still 164.6 MB. Free memory was 140.1 MB in the beginning and 116.2 MB in the end (delta: 23.9 MB). Peak memory consumption was 24.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:12,363 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 164.6 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:12,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.05 ms. Allocated memory is still 164.6 MB. Free memory was 140.0 MB in the beginning and 129.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:12,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.33 ms. Allocated memory is still 164.6 MB. Free memory was 129.1 MB in the beginning and 127.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:12,368 INFO L168 Benchmark]: Boogie Preprocessor took 36.89 ms. Allocated memory is still 164.6 MB. Free memory was 127.2 MB in the beginning and 125.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:12,369 INFO L168 Benchmark]: RCFGBuilder took 646.75 ms. Allocated memory is still 164.6 MB. Free memory was 125.7 MB in the beginning and 139.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:12,371 INFO L168 Benchmark]: TraceAbstraction took 709.54 ms. Allocated memory is still 164.6 MB. Free memory was 139.1 MB in the beginning and 116.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:12,371 INFO L168 Benchmark]: Witness Printer took 5.18 ms. Allocated memory is still 164.6 MB. Free memory is still 116.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:12,386 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 164.6 MB. Free memory is still 138.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.05 ms. Allocated memory is still 164.6 MB. Free memory was 140.0 MB in the beginning and 129.1 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.33 ms. Allocated memory is still 164.6 MB. Free memory was 129.1 MB in the beginning and 127.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.89 ms. Allocated memory is still 164.6 MB. Free memory was 127.2 MB in the beginning and 125.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 646.75 ms. Allocated memory is still 164.6 MB. Free memory was 125.7 MB in the beginning and 139.6 MB in the end (delta: -13.9 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 709.54 ms. Allocated memory is still 164.6 MB. Free memory was 139.1 MB in the beginning and 116.7 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Witness Printer took 5.18 ms. Allocated memory is still 164.6 MB. Free memory is still 116.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 105]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 39, overapproximation of bitwiseOr at line 40, overapproximation of someUnaryDOUBLEoperation at line 100, overapproximation of bitwiseAnd at line 27, overapproximation of someBinaryDOUBLEComparisonOperation at line 104. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L100] double x = -0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L101] double res = floor_double(x); [L104] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L104] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L105] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 38 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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...