/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:13:11,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:13:11,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:13:12,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:13:12,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:13:12,038 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:13:12,039 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:13:12,042 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:13:12,044 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:13:12,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:13:12,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:13:12,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:13:12,049 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:13:12,050 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:13:12,052 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:13:12,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:13:12,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:13:12,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:13:12,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:13:12,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:13:12,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:13:12,087 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:13:12,089 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:13:12,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:13:12,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:13:12,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:13:12,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:13:12,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:13:12,108 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 13:13:12,139 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:13:12,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:13:12,141 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:13:12,142 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:13:12,142 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:13:12,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:13:12,143 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:13:12,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:13:12,144 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:13:12,144 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:13:12,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:13:12,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:13:12,145 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:13:12,146 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:13:12,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:13:12,146 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:13:12,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:13:12,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:13:12,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:13:12,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:13:12,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:13:12,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:13:12,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:13:12,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:13:12,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:13:12,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:13:12,150 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:13:12,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:13:12,150 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:13:12,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:13:12,652 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:13:12,655 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:13:12,657 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:13:12,658 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:13:12,660 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2021-02-23 13:13:12,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/880e22013/216f3ce3a1b44a329ea300b0b0e6fa82/FLAG99ae82bd8 [2021-02-23 13:13:13,445 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:13:13,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1051.c [2021-02-23 13:13:13,454 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/880e22013/216f3ce3a1b44a329ea300b0b0e6fa82/FLAG99ae82bd8 [2021-02-23 13:13:13,831 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/880e22013/216f3ce3a1b44a329ea300b0b0e6fa82 [2021-02-23 13:13:13,835 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:13:13,850 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:13:13,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:13,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:13:13,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:13:13,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:13" (1/1) ... [2021-02-23 13:13:13,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75011453 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:13, skipping insertion in model container [2021-02-23 13:13:13,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:13:13" (1/1) ... [2021-02-23 13:13:13,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:13:13,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:13:14,104 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_1051.c[1637,1650] [2021-02-23 13:13:14,108 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:14,119 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:13:14,147 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_1051.c[1637,1650] [2021-02-23 13:13:14,148 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:13:14,173 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:13:14,173 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14 WrapperNode [2021-02-23 13:13:14,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:13:14,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:13:14,175 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:13:14,177 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:13:14,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (1/1) ... [2021-02-23 13:13:14,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (1/1) ... [2021-02-23 13:13:14,217 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (1/1) ... [2021-02-23 13:13:14,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (1/1) ... [2021-02-23 13:13:14,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (1/1) ... [2021-02-23 13:13:14,253 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (1/1) ... [2021-02-23 13:13:14,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (1/1) ... [2021-02-23 13:13:14,271 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:13:14,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:13:14,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:13:14,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:13:14,274 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (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 13:13:14,407 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:13:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:13:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:13:14,408 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2021-02-23 13:13:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-23 13:13:14,409 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:13:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:13:14,410 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:13:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:13:14,411 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:13:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-23 13:13:14,412 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2021-02-23 13:13:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-23 13:13:14,413 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:13:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:13:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:13:14,414 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-23 13:13:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-23 13:13:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:13:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:13:14,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:13:14,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:13:14,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:13:14,907 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 13:13:14,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:14 BoogieIcfgContainer [2021-02-23 13:13:14,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:13:14,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:13:14,911 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:13:14,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:13:14,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:13:13" (1/3) ... [2021-02-23 13:13:14,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eafa36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:14, skipping insertion in model container [2021-02-23 13:13:14,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:13:14" (2/3) ... [2021-02-23 13:13:14,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79eafa36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:13:14, skipping insertion in model container [2021-02-23 13:13:14,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:13:14" (3/3) ... [2021-02-23 13:13:14,918 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1051.c [2021-02-23 13:13:14,924 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:13:14,931 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:13:14,959 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:13:15,004 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:13:15,004 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:13:15,004 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:13:15,004 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:13:15,005 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:13:15,005 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:13:15,005 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:13:15,005 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:13:15,030 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2021-02-23 13:13:15,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 13:13:15,042 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:15,043 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 13:13:15,044 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:15,054 INFO L82 PathProgramCache]: Analyzing trace with hash 153098812, now seen corresponding path program 1 times [2021-02-23 13:13:15,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:15,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858335090] [2021-02-23 13:13:15,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:15,374 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:15,375 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:15,376 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:15,377 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:13:15,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:15,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:15,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:15,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:13:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:15,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:15,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:15,477 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:15,477 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:15,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-02-23 13:13:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:13:15,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:13:15,489 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:13:15,493 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 13:13:15,494 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858335090] [2021-02-23 13:13:15,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:13:15,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-23 13:13:15,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936214848] [2021-02-23 13:13:15,501 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-23 13:13:15,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:13:15,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-23 13:13:15,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-23 13:13:15,520 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2021-02-23 13:13:15,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:13:15,718 INFO L93 Difference]: Finished difference Result 70 states and 96 transitions. [2021-02-23 13:13:15,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:13:15,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2021-02-23 13:13:15,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:13:15,732 INFO L225 Difference]: With dead ends: 70 [2021-02-23 13:13:15,732 INFO L226 Difference]: Without dead ends: 35 [2021-02-23 13:13:15,736 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 13:13:15,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-23 13:13:15,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-23 13:13:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-23 13:13:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 43 transitions. [2021-02-23 13:13:15,783 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 43 transitions. Word has length 22 [2021-02-23 13:13:15,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:13:15,783 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 43 transitions. [2021-02-23 13:13:15,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-23 13:13:15,784 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 43 transitions. [2021-02-23 13:13:15,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-23 13:13:15,785 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:13:15,785 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 13:13:15,785 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:13:15,786 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:13:15,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:13:15,787 INFO L82 PathProgramCache]: Analyzing trace with hash 1251099127, now seen corresponding path program 1 times [2021-02-23 13:13:15,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:13:15,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900147161] [2021-02-23 13:13:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:13:15,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:15,864 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:13:15,906 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:13:15,936 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:13:15,936 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:13:15,937 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:13:15,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:13:15 BoogieIcfgContainer [2021-02-23 13:13:15,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:13:15,975 INFO L168 Benchmark]: Toolchain (without parser) took 2137.77 ms. Allocated memory is still 152.0 MB. Free memory was 127.5 MB in the beginning and 75.8 MB in the end (delta: 51.8 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:15,976 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:13:15,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.09 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 116.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:15,978 INFO L168 Benchmark]: Boogie Preprocessor took 97.00 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:15,979 INFO L168 Benchmark]: RCFGBuilder took 636.32 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 129.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:15,980 INFO L168 Benchmark]: TraceAbstraction took 1063.29 ms. Allocated memory is still 152.0 MB. Free memory was 128.7 MB in the beginning and 75.8 MB in the end (delta: 53.0 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:13:15,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory is still 124.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 317.09 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 116.1 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 97.00 ms. Allocated memory is still 152.0 MB. Free memory was 116.1 MB in the beginning and 114.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 636.32 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 129.3 MB in the end (delta: -14.9 MB). Peak memory consumption was 15.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1063.29 ms. Allocated memory is still 152.0 MB. Free memory was 128.7 MB in the beginning and 75.8 MB in the end (delta: 53.0 MB). Peak memory consumption was 52.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: 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 60, overapproximation of someBinaryArithmeticFLOAToperation at line 47, overapproximation of bitwiseAnd at line 24. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; VAL [\old(huge_floor)=1000000000000000000000000000005, huge_floor=1000000000000000000000000000000] [L68] float x = 0.0f / 0.0f; VAL [huge_floor=1000000000000000000000000000000] [L69] CALL, EXPR floor_float(x) VAL [\old(x)=1000000000000000000000000000011, huge_floor=1000000000000000000000000000000] [L17] __int32_t i0, j0; [L18] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000011, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000011] [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (i0) = gf_u.word [L24] ix = (i0 & 0x7fffffff) [L25] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000011, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000011] [L26] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000011, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000011] [L46] COND TRUE !((ix) < 0x7f800000L) [L47] return x + x; VAL [\old(x)=1000000000000000000000000000011, huge_floor=1000000000000000000000000000000, i=-36028792723996673, i0=-1, j0=384, x=1000000000000000000000000000011] [L69] RET, EXPR floor_float(x) VAL [floor_float(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000011] [L69] float res = floor_float(x); [L72] CALL, EXPR isnan_float(res) VAL [\old(x)=1000000000000000000000000000004, huge_floor=1000000000000000000000000000000] [L60] return x != x; VAL [\old(x)=1000000000000000000000000000004, \result=0, huge_floor=1000000000000000000000000000000, x=1000000000000000000000000000004] [L72] RET, EXPR isnan_float(res) VAL [huge_floor=1000000000000000000000000000000, isnan_float(res)=0, res=1000000000000000000000000000004, x=1000000000000000000000000000011] [L72] COND TRUE !isnan_float(res) [L73] reach_error() VAL [huge_floor=1000000000000000000000000000000, res=1000000000000000000000000000004, x=1000000000000000000000000000011] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 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: 45 SDtfs, 8 SDslu, 37 SDs, 0 SdLazy, 43 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=39occurred 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, 1386 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...