/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_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:46:05,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:46:05,804 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:46:05,846 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:46:05,847 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:46:05,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:46:05,855 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:46:05,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:46:05,867 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:46:05,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:46:05,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:46:05,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:46:05,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:46:05,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:46:05,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:46:05,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:46:05,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:46:05,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:46:05,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:46:05,920 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:46:05,923 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:46:05,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:46:05,928 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:46:05,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:46:05,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:46:05,961 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:46:05,962 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:46:05,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:46:05,964 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:46:06,004 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:46:06,005 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:46:06,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:46:06,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:46:06,009 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:46:06,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:46:06,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:46:06,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:46:06,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:46:06,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:46:06,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:46:06,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:46:06,013 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:46:06,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:46:06,014 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:46:06,014 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:46:06,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:46:06,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:46:06,015 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:46:06,015 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:46:06,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:46:06,016 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:46:06,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:46:06,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:46:06,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:46:06,017 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:46:06,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:46:06,510 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:46:06,513 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:46:06,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:46:06,515 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:46:06,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-12-22 03:46:06,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fcebca5/67e870c4ddc644ce8efb10669be8a4f9/FLAG90295c66d [2020-12-22 03:46:07,194 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:46:07,195 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-12-22 03:46:07,205 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fcebca5/67e870c4ddc644ce8efb10669be8a4f9/FLAG90295c66d [2020-12-22 03:46:07,495 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fcebca5/67e870c4ddc644ce8efb10669be8a4f9 [2020-12-22 03:46:07,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:46:07,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:46:07,502 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:07,502 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:46:07,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:46:07,507 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59126267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07, skipping insertion in model container [2020-12-22 03:46:07,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:46:07,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:46:07,736 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_1032d.c[2356,2369] [2020-12-22 03:46:07,739 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:07,761 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:46:07,796 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_1032d.c[2356,2369] [2020-12-22 03:46:07,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:46:07,816 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:46:07,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07 WrapperNode [2020-12-22 03:46:07,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:46:07,819 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:07,819 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:46:07,819 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:46:07,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,878 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:46:07,879 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:46:07,879 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:46:07,879 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:46:07,890 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,890 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,894 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,909 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (1/1) ... [2020-12-22 03:46:07,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:46:07,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:46:07,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:46:07,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:46:07,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (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 03:46:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:46:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:46:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:46:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-22 03:46:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-22 03:46:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:46:08,069 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:46:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-22 03:46:08,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:46:08,743 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:46:08,743 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-22 03:46:08,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:08 BoogieIcfgContainer [2020-12-22 03:46:08,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:46:08,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:46:08,747 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:46:08,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:46:08,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:46:07" (1/3) ... [2020-12-22 03:46:08,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50963e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:08, skipping insertion in model container [2020-12-22 03:46:08,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:46:07" (2/3) ... [2020-12-22 03:46:08,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50963e8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:46:08, skipping insertion in model container [2020-12-22 03:46:08,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:08" (3/3) ... [2020-12-22 03:46:08,755 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-12-22 03:46:08,762 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:46:08,768 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:46:08,791 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:46:08,822 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:46:08,822 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:46:08,822 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:46:08,822 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:46:08,823 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:46:08,823 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:46:08,823 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:46:08,823 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:46:08,841 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-22 03:46:08,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:46:08,848 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:08,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:08,850 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:08,856 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-12-22 03:46:08,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:08,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862461351] [2020-12-22 03:46:08,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:08,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:46:09,035 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 03:46:09,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862461351] [2020-12-22 03:46:09,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:46:09,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 03:46:09,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547481137] [2020-12-22 03:46:09,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 03:46:09,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:46:09,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 03:46:09,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 03:46:09,061 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-22 03:46:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:46:09,082 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-12-22 03:46:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 03:46:09,084 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-22 03:46:09,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:46:09,095 INFO L225 Difference]: With dead ends: 56 [2020-12-22 03:46:09,096 INFO L226 Difference]: Without dead ends: 26 [2020-12-22 03:46:09,099 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 03:46:09,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-22 03:46:09,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-22 03:46:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-22 03:46:09,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-12-22 03:46:09,138 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-12-22 03:46:09,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:46:09,138 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-12-22 03:46:09,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 03:46:09,139 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-22 03:46:09,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 03:46:09,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:46:09,140 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:46:09,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:46:09,140 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:46:09,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:46:09,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-12-22 03:46:09,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:46:09,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143104762] [2020-12-22 03:46:09,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:46:09,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:09,247 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:46:09,316 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:46:09,347 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:46:09,347 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:46:09,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:46:09,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:46:09 BoogieIcfgContainer [2020-12-22 03:46:09,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:46:09,387 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:46:09,387 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:46:09,387 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:46:09,388 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:46:08" (3/4) ... [2020-12-22 03:46:09,392 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:46:09,392 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:46:09,395 INFO L168 Benchmark]: Toolchain (without parser) took 1893.67 ms. Allocated memory is still 155.2 MB. Free memory was 136.5 MB in the beginning and 89.3 MB in the end (delta: 47.2 MB). Peak memory consumption was 45.8 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:09,396 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:09,397 INFO L168 Benchmark]: CACSL2BoogieTranslator took 315.97 ms. Allocated memory is still 155.2 MB. Free memory was 136.5 MB in the beginning and 125.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:09,398 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.07 ms. Allocated memory is still 155.2 MB. Free memory was 125.7 MB in the beginning and 138.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:09,398 INFO L168 Benchmark]: Boogie Preprocessor took 57.63 ms. Allocated memory is still 155.2 MB. Free memory was 138.3 MB in the beginning and 136.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:09,399 INFO L168 Benchmark]: RCFGBuilder took 808.32 ms. Allocated memory is still 155.2 MB. Free memory was 136.3 MB in the beginning and 116.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:09,400 INFO L168 Benchmark]: TraceAbstraction took 639.03 ms. Allocated memory is still 155.2 MB. Free memory was 116.6 MB in the beginning and 89.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:46:09,401 INFO L168 Benchmark]: Witness Printer took 5.51 ms. Allocated memory is still 155.2 MB. Free memory was 89.7 MB in the beginning and 89.3 MB in the end (delta: 338.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:46:09,405 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 155.2 MB. Free memory is still 127.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 315.97 ms. Allocated memory is still 155.2 MB. Free memory was 136.5 MB in the beginning and 125.7 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 59.07 ms. Allocated memory is still 155.2 MB. Free memory was 125.7 MB in the beginning and 138.3 MB in the end (delta: -12.6 MB). Peak memory consumption was 4.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.63 ms. Allocated memory is still 155.2 MB. Free memory was 138.3 MB in the beginning and 136.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 808.32 ms. Allocated memory is still 155.2 MB. Free memory was 136.3 MB in the beginning and 116.9 MB in the end (delta: 19.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 639.03 ms. Allocated memory is still 155.2 MB. Free memory was 116.6 MB in the beginning and 89.7 MB in the end (delta: 26.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. * Witness Printer took 5.51 ms. Allocated memory is still 155.2 MB. Free memory was 89.7 MB in the beginning and 89.3 MB in the end (delta: 338.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 93]: 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 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 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: 36 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=29occurred 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, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 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...