/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 15:46:53,586 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 15:46:53,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 15:46:53,642 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 15:46:53,670 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 15:46:53,672 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 15:46:53,674 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 15:46:53,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 15:46:53,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 15:46:53,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 15:46:53,694 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 15:46:53,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 15:46:53,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 15:46:53,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 15:46:53,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 15:46:53,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 15:46:53,716 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 15:46:53,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 15:46:53,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 15:46:53,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 15:46:53,729 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 [2021-02-21 15:46:53,778 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 15:46:53,779 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 15:46:53,783 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 15:46:53,783 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 15:46:53,784 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 15:46:53,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 15:46:53,784 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 15:46:53,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 15:46:53,785 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 15:46:53,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 15:46:53,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 15:46:53,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 15:46:53,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 15:46:53,787 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 15:46:53,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 15:46:53,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 15:46:53,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 15:46:53,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 15:46:53,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 15:46:53,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 15:46:53,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 15:46:53,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 15:46:53,789 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 15:46:53,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 15:46:53,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 15:46:53,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 15:46:53,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 15:46:53,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 15:46:53,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 15:46:54,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 15:46:54,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 15:46:54,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 15:46:54,202 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 15:46:54,203 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 15:46:54,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2021-02-21 15:46:54,277 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ae0c97c/0496755431624fbbb58502f1575ff758/FLAG79491806f [2021-02-21 15:46:54,897 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 15:46:54,898 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c [2021-02-21 15:46:54,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ae0c97c/0496755431624fbbb58502f1575ff758/FLAG79491806f [2021-02-21 15:46:55,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3ae0c97c/0496755431624fbbb58502f1575ff758 [2021-02-21 15:46:55,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 15:46:55,280 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 15:46:55,284 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 15:46:55,284 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 15:46:55,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 15:46:55,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c60f81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55, skipping insertion in model container [2021-02-21 15:46:55,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 15:46:55,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 15:46:55,554 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c[3225,3238] [2021-02-21 15:46:55,561 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:46:55,576 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 15:46:55,663 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_0730b.c[3225,3238] [2021-02-21 15:46:55,667 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 15:46:55,694 INFO L208 MainTranslator]: Completed translation [2021-02-21 15:46:55,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55 WrapperNode [2021-02-21 15:46:55,695 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 15:46:55,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 15:46:55,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 15:46:55,699 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 15:46:55,716 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,748 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,749 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,806 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (1/1) ... [2021-02-21 15:46:55,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 15:46:55,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 15:46:55,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 15:46:55,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 15:46:55,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (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 [2021-02-21 15:46:55,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 15:46:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 15:46:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 15:46:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrt [2021-02-21 15:46:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2021-02-21 15:46:55,940 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 15:46:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 15:46:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 15:46:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 15:46:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 15:46:55,941 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2021-02-21 15:46:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrt [2021-02-21 15:46:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-21 15:46:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 15:46:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 15:46:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 15:46:55,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-21 15:46:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2021-02-21 15:46:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 15:46:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 15:46:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 15:46:55,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 15:46:56,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 15:46:56,703 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-02-21 15:46:56,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:46:56 BoogieIcfgContainer [2021-02-21 15:46:56,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 15:46:56,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 15:46:56,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 15:46:56,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 15:46:56,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 03:46:55" (1/3) ... [2021-02-21 15:46:56,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3653c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:46:56, skipping insertion in model container [2021-02-21 15:46:56,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 03:46:55" (2/3) ... [2021-02-21 15:46:56,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3653c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 03:46:56, skipping insertion in model container [2021-02-21 15:46:56,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 03:46:56" (3/3) ... [2021-02-21 15:46:56,714 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_0730b.c [2021-02-21 15:46:56,722 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 15:46:56,728 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 15:46:56,749 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 15:46:56,788 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 15:46:56,789 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 15:46:56,789 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 15:46:56,789 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 15:46:56,790 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 15:46:56,790 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 15:46:56,790 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 15:46:56,790 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 15:46:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states. [2021-02-21 15:46:56,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-21 15:46:56,821 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:46:56,821 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:46:56,822 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:46:56,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:46:56,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1542512530, now seen corresponding path program 1 times [2021-02-21 15:46:56,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:46:56,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709405834] [2021-02-21 15:46:56,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:46:56,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:46:57,000 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:57,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:57,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:57,003 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:57,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 15:46:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:46:57,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:57,091 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:57,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 15:46:57,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 15:46:57,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:57,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:57,125 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 15:46:57,126 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 15:46:57,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 15:46:57,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709405834] [2021-02-21 15:46:57,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 15:46:57,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 15:46:57,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496093655] [2021-02-21 15:46:57,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 15:46:57,138 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 15:46:57,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 15:46:57,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 15:46:57,156 INFO L87 Difference]: Start difference. First operand 66 states. Second operand 4 states. [2021-02-21 15:46:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 15:46:57,401 INFO L93 Difference]: Finished difference Result 124 states and 187 transitions. [2021-02-21 15:46:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 15:46:57,403 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2021-02-21 15:46:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 15:46:57,413 INFO L225 Difference]: With dead ends: 124 [2021-02-21 15:46:57,413 INFO L226 Difference]: Without dead ends: 62 [2021-02-21 15:46:57,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 15:46:57,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-21 15:46:57,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-02-21 15:46:57,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-21 15:46:57,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 82 transitions. [2021-02-21 15:46:57,465 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 82 transitions. Word has length 16 [2021-02-21 15:46:57,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 15:46:57,466 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 82 transitions. [2021-02-21 15:46:57,466 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 15:46:57,466 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 82 transitions. [2021-02-21 15:46:57,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-21 15:46:57,467 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 15:46:57,467 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 15:46:57,468 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 15:46:57,468 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 15:46:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 15:46:57,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2116640226, now seen corresponding path program 1 times [2021-02-21 15:46:57,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 15:46:57,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029078915] [2021-02-21 15:46:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 15:46:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:46:57,513 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:46:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 15:46:57,547 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 15:46:57,599 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 15:46:57,600 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 15:46:57,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 15:46:57,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 03:46:57 BoogieIcfgContainer [2021-02-21 15:46:57,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 15:46:57,660 INFO L168 Benchmark]: Toolchain (without parser) took 2390.55 ms. Allocated memory is still 153.1 MB. Free memory was 128.8 MB in the beginning and 58.7 MB in the end (delta: 70.0 MB). Peak memory consumption was 70.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:57,661 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 153.1 MB. Free memory was 125.8 MB in the beginning and 125.6 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 15:46:57,662 INFO L168 Benchmark]: CACSL2BoogieTranslator took 411.42 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 115.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:57,663 INFO L168 Benchmark]: Boogie Preprocessor took 126.18 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 113.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:57,664 INFO L168 Benchmark]: RCFGBuilder took 880.64 ms. Allocated memory is still 153.1 MB. Free memory was 113.2 MB in the beginning and 120.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:57,665 INFO L168 Benchmark]: TraceAbstraction took 950.84 ms. Allocated memory is still 153.1 MB. Free memory was 120.1 MB in the beginning and 58.7 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. [2021-02-21 15:46:57,669 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 153.1 MB. Free memory was 125.8 MB in the beginning and 125.6 MB in the end (delta: 210.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 411.42 ms. Allocated memory is still 153.1 MB. Free memory was 127.7 MB in the beginning and 115.5 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 126.18 ms. Allocated memory is still 153.1 MB. Free memory was 115.5 MB in the beginning and 113.2 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 880.64 ms. Allocated memory is still 153.1 MB. Free memory was 113.2 MB in the beginning and 120.6 MB in the end (delta: -7.4 MB). Peak memory consumption was 17.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 950.84 ms. Allocated memory is still 153.1 MB. Free memory was 120.1 MB in the beginning and 58.7 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 156]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 151, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35, overapproximation of bitwiseAnd at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 155. Possible FailurePath: [L19] static const double one_sqrt = 1.0, tiny_sqrt = 1.0e-300; VAL [\old(one_sqrt)=4294967300, \old(tiny_sqrt)=4294967308, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L151] double x = -0.0; VAL [one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L152] CALL, EXPR __ieee754_sqrt(x) VAL [\old(x)=4294967302, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] double z; [L23] __int32_t sign = 0x80000000; [L24] __uint32_t r, t1, s1, ix1, q1; [L25] __int32_t ix0, s0, q, m, t, i; VAL [\old(x)=4294967302, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967302] [L28] ieee_double_shape_type ew_u; [L29] ew_u.value = (x) [L30] EXPR ew_u.parts.msw [L30] (ix0) = ew_u.parts.msw [L31] EXPR ew_u.parts.lsw [L31] (ix1) = ew_u.parts.lsw [L34] COND TRUE (ix0 & 0x7ff00000) == 0x7ff00000 [L35] return x * x + x; VAL [\old(x)=4294967302, ix0=-1, ix1=4294967299, one_sqrt=1, sign=-2147483648, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967302] [L152] RET, EXPR __ieee754_sqrt(x) VAL [__ieee754_sqrt(x)=4294967298, one_sqrt=1, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967302] [L152] double res = __ieee754_sqrt(x); [L155] EXPR res == -0.0 && __signbit_double(res) == 1 VAL [one_sqrt=1, res=4294967298, res == -0.0 && __signbit_double(res) == 1=0, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967302] [L155] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L156] reach_error() VAL [one_sqrt=1, res=4294967298, tiny_sqrt=1/1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000, x=4294967302] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 69 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 83 SDtfs, 6 SDslu, 78 SDs, 0 SdLazy, 83 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=66occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 945 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...