/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/float_req_bl_1031.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:13:08,941 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:13:08,943 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:13:08,997 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:13:08,998 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:13:09,001 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:13:09,004 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:13:09,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:13:09,023 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:13:09,024 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:13:09,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:13:09,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:13:09,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:13:09,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:13:09,034 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:13:09,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:13:09,036 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:13:09,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:13:09,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:13:09,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:13:09,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:13:09,044 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:13:09,045 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:13:09,046 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:13:09,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:13:09,058 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:13:09,059 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:13:09,060 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:13:09,061 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 [2021-02-23 13:13:09,088 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:13:09,088 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:13:09,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:13:09,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:13:09,090 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:13:09,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:13:09,091 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:13:09,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:13:09,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:13:09,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:13:09,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:13:09,092 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:13:09,092 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:13:09,092 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:13:09,092 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:13:09,092 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:13:09,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:13:09,093 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:13:09,093 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:13:09,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:13:09,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:13:09,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:13:09,094 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:13:09,094 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:13:09,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:13:09,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:13:09,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:13:09,095 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:13:09,095 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:13:09,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:13:09,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:13:09,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:13:09,525 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:13:09,525 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:13:09,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1031.c [2021-02-23 13:13:09,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0164530/4280fda20ac34ab6bc5fd27a94819933/FLAGf9724cdd5 [2021-02-23 13:13:10,286 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:13:10,287 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1031.c [2021-02-23 13:13:10,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0164530/4280fda20ac34ab6bc5fd27a94819933/FLAGf9724cdd5 [2021-02-23 13:13:10,637 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b0164530/4280fda20ac34ab6bc5fd27a94819933 [2021-02-23 13:13:10,645 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:13:10,658 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:13:10,660 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:10,660 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:13:10,664 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:13:10,665 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3509d6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10, skipping insertion in model container [2021-02-23 13:13:10,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:13:10,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:13:10,855 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/float_req_bl_1031.c[1571,1584] [2021-02-23 13:13:10,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:10,867 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:13:10,891 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/float_req_bl_1031.c[1571,1584] [2021-02-23 13:13:10,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:10,908 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:13:10,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10 WrapperNode [2021-02-23 13:13:10,908 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:10,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:13:10,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:13:10,910 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:13:10,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,947 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (1/1) ... [2021-02-23 13:13:10,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:13:10,951 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:13:10,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:13:10,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:13:10,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (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 [2021-02-23 13:13:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:13:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:13:11,042 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:13:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2021-02-23 13:13:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-23 13:13:11,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:13:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:13:11,043 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:13:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:13:11,045 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:13:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2021-02-23 13:13:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:13:11,046 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:13:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:13:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:13:11,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:13:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-23 13:13:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:13:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:13:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:13:11,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:13:11,436 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:13:11,437 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 13:13:11,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:11 BoogieIcfgContainer [2021-02-23 13:13:11,439 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:13:11,440 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:13:11,440 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:13:11,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:13:11,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:13:10" (1/3) ... [2021-02-23 13:13:11,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371e87ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:11, skipping insertion in model container [2021-02-23 13:13:11,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:10" (2/3) ... [2021-02-23 13:13:11,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@371e87ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:11, skipping insertion in model container [2021-02-23 13:13:11,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:11" (3/3) ... [2021-02-23 13:13:11,447 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1031.c [2021-02-23 13:13:11,455 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:13:11,460 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:13:11,508 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:13:11,550 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:13:11,550 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:13:11,550 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:13:11,550 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:13:11,550 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:13:11,551 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:13:11,551 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:13:11,551 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:13:11,569 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2021-02-23 13:13:11,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:13:11,576 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:11,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:13:11,577 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:11,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:11,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1956411562, now seen corresponding path program 1 times [2021-02-23 13:13:11,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:11,595 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307431190] [2021-02-23 13:13:11,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:11,847 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:11,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:11,850 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:11,851 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:11,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:13:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:11,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:11,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:13:11,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:11,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:11,997 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:11,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:11,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:12,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 13:13:12,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:12,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:12,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:12,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:13:12,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307431190] [2021-02-23 13:13:12,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:13:12,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:13:12,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134890213] [2021-02-23 13:13:12,042 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:13:12,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:13:12,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:13:12,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:13:12,063 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 4 states. [2021-02-23 13:13:12,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:13:12,236 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2021-02-23 13:13:12,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:13:12,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-23 13:13:12,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:13:12,247 INFO L225 Difference]: With dead ends: 60 [2021-02-23 13:13:12,248 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 13:13:12,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:13:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 13:13:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-23 13:13:12,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-23 13:13:12,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2021-02-23 13:13:12,292 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 22 [2021-02-23 13:13:12,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:13:12,292 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2021-02-23 13:13:12,292 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:13:12,292 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2021-02-23 13:13:12,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:13:12,294 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:12,294 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:13:12,294 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:13:12,294 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:12,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:12,295 INFO L82 PathProgramCache]: Analyzing trace with hash 437001, now seen corresponding path program 1 times [2021-02-23 13:13:12,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:12,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827640571] [2021-02-23 13:13:12,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:12,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:12,355 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:12,427 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:12,474 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:13:12,475 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:13:12,477 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:13:12,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:12 BoogieIcfgContainer [2021-02-23 13:13:12,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:13:12,536 INFO L168 Benchmark]: Toolchain (without parser) took 1888.11 ms. Allocated memory is still 155.2 MB. Free memory was 131.2 MB in the beginning and 88.1 MB in the end (delta: 43.1 MB). Peak memory consumption was 43.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:12,537 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:13:12,539 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.71 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 119.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:12,541 INFO L168 Benchmark]: Boogie Preprocessor took 40.37 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:12,542 INFO L168 Benchmark]: RCFGBuilder took 487.93 ms. Allocated memory is still 155.2 MB. Free memory was 118.2 MB in the beginning and 136.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:12,543 INFO L168 Benchmark]: TraceAbstraction took 1093.50 ms. Allocated memory is still 155.2 MB. Free memory was 136.4 MB in the beginning and 88.1 MB in the end (delta: 48.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:12,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 155.2 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 248.71 ms. Allocated memory is still 155.2 MB. Free memory was 129.9 MB in the beginning and 119.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.37 ms. Allocated memory is still 155.2 MB. Free memory was 119.8 MB in the beginning and 118.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 487.93 ms. Allocated memory is still 155.2 MB. Free memory was 118.2 MB in the beginning and 136.9 MB in the end (delta: -18.7 MB). Peak memory consumption was 20.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1093.50 ms. Allocated memory is still 155.2 MB. Free memory was 136.4 MB in the beginning and 88.1 MB in the end (delta: 48.2 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 72]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 57, overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L67] float x = 0.0f / 0.0f; [L68] CALL, EXPR round_float(x) VAL [\old(x)=2139095048] [L14] __uint32_t w; [L16] int exponent_less_127; VAL [\old(x)=2139095048, x=2139095048] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 VAL [\old(x)=2139095048, exponent_less_127=128, w=2139095044, x=2139095048] [L26] COND FALSE !(exponent_less_127 < 23) VAL [\old(x)=2139095048, exponent_less_127=128, w=2139095044, x=2139095048] [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; VAL [\old(x)=2139095048, exponent_less_127=128, w=2139095044, x=2139095048] [L68] RET, EXPR round_float(x) VAL [round_float(x)=2139095045, x=2139095048] [L68] float res = round_float(x); [L71] CALL, EXPR isnan_float(res) VAL [\old(x)=2139095045] [L57] return x != x; VAL [\old(x)=2139095045, \result=0, x=2139095045] [L71] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=2139095045, x=2139095048] [L71] COND TRUE !isnan_float(res) [L72] reach_error() VAL [res=2139095045, x=2139095048] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 8 SDslu, 28 SDs, 0 SdLazy, 34 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred 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, 0.2s InterpolantComputationTime, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1323 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...