/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_1092c.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:56:03,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:56:03,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:56:03,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:56:03,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:56:03,348 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:56:03,350 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:56:03,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:56:03,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:56:03,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:56:03,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:56:03,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:56:03,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:56:03,361 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:56:03,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:56:03,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:56:03,365 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:56:03,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:56:03,369 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:56:03,371 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:56:03,374 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:56:03,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:56:03,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:56:03,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:56:03,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 17:56:03,410 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:56:03,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:56:03,414 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:56:03,415 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 [2020-10-23 17:56:03,471 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:56:03,472 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:56:03,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:56:03,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:56:03,478 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:56:03,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:56:03,479 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:56:03,479 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:56:03,479 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:56:03,479 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:56:03,481 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:56:03,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:56:03,481 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:56:03,482 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:56:03,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:56:03,482 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:56:03,482 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:56:03,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:56:03,483 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:56:03,483 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:56:03,484 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:56:03,484 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:03,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:56:03,484 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:56:03,485 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:56:03,485 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:56:03,485 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:56:03,485 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:56:03,486 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:56:03,486 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:56:03,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:56:03,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:56:03,955 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:56:03,956 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:56:03,957 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:56:03,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-10-23 17:56:04,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6696e8a7e/388a46537b5940b79cbb54c31b6e8cb4/FLAG56532a366 [2020-10-23 17:56:04,791 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:56:04,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-10-23 17:56:04,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6696e8a7e/388a46537b5940b79cbb54c31b6e8cb4/FLAG56532a366 [2020-10-23 17:56:05,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6696e8a7e/388a46537b5940b79cbb54c31b6e8cb4 [2020-10-23 17:56:05,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:56:05,163 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:56:05,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:05,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:56:05,170 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:56:05,171 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,174 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5126e57b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05, skipping insertion in model container [2020-10-23 17:56:05,175 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:56:05,202 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:56:05,405 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:05,416 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:56:05,448 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:56:05,467 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:56:05,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05 WrapperNode [2020-10-23 17:56:05,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:56:05,469 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:56:05,470 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:56:05,470 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:56:05,484 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,495 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,495 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... [2020-10-23 17:56:05,519 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:56:05,520 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:56:05,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:56:05,521 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:56:05,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:56:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:56:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:56:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:56:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-10-23 17:56:05,608 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-23 17:56:05,609 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:56:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:56:05,609 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:56:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:56:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:56:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-10-23 17:56:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-23 17:56:05,610 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:56:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:56:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:56:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-23 17:56:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-23 17:56:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:56:05,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:56:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:56:05,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:56:06,090 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:56:06,091 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-23 17:56:06,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:06 BoogieIcfgContainer [2020-10-23 17:56:06,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:56:06,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:56:06,096 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:56:06,099 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:56:06,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:56:05" (1/3) ... [2020-10-23 17:56:06,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb3ab10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:06, skipping insertion in model container [2020-10-23 17:56:06,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:56:05" (2/3) ... [2020-10-23 17:56:06,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb3ab10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:56:06, skipping insertion in model container [2020-10-23 17:56:06,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:56:06" (3/3) ... [2020-10-23 17:56:06,104 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092c.c [2020-10-23 17:56:06,117 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:56:06,123 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:56:06,137 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:56:06,167 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:56:06,167 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:56:06,167 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:56:06,167 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:56:06,168 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:56:06,168 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:56:06,168 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:56:06,168 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:56:06,187 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-10-23 17:56:06,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-23 17:56:06,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:06,194 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, 1, 1] [2020-10-23 17:56:06,195 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:06,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:06,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1451067553, now seen corresponding path program 1 times [2020-10-23 17:56:06,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:06,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657907089] [2020-10-23 17:56:06,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:06,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:06,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 17:56:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 17:56:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:06,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 17:56:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 17:56:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 17:56:06,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657907089] [2020-10-23 17:56:06,676 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 17:56:06,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 17:56:06,678 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179728502] [2020-10-23 17:56:06,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 17:56:06,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 17:56:06,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 17:56:06,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 17:56:06,704 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 4 states. [2020-10-23 17:56:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 17:56:06,985 INFO L93 Difference]: Finished difference Result 81 states and 113 transitions. [2020-10-23 17:56:06,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 17:56:06,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-23 17:56:06,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 17:56:07,008 INFO L225 Difference]: With dead ends: 81 [2020-10-23 17:56:07,008 INFO L226 Difference]: Without dead ends: 39 [2020-10-23 17:56:07,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 17:56:07,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-23 17:56:07,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-23 17:56:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 17:56:07,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-23 17:56:07,107 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 25 [2020-10-23 17:56:07,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 17:56:07,107 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-23 17:56:07,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 17:56:07,108 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-23 17:56:07,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-23 17:56:07,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:56:07,111 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, 1, 1, 1, 1] [2020-10-23 17:56:07,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:56:07,112 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:56:07,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:56:07,114 INFO L82 PathProgramCache]: Analyzing trace with hash 764989296, now seen corresponding path program 1 times [2020-10-23 17:56:07,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:56:07,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599662768] [2020-10-23 17:56:07,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:56:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:07,300 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:07,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:56:07,359 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:56:07,392 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:56:07,392 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:56:07,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 17:56:07,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:56:07 BoogieIcfgContainer [2020-10-23 17:56:07,432 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:56:07,436 INFO L168 Benchmark]: Toolchain (without parser) took 2275.31 ms. Allocated memory is still 158.3 MB. Free memory was 134.5 MB in the beginning and 128.8 MB in the end (delta: 5.6 MB). Peak memory consumption was 6.9 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:07,437 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 96.2 MB in the end (delta: 120.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:56:07,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 303.46 ms. Allocated memory is still 158.3 MB. Free memory was 134.0 MB in the beginning and 123.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:07,442 INFO L168 Benchmark]: Boogie Preprocessor took 49.85 ms. Allocated memory is still 158.3 MB. Free memory was 123.5 MB in the beginning and 121.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:07,443 INFO L168 Benchmark]: RCFGBuilder took 573.25 ms. Allocated memory is still 158.3 MB. Free memory was 121.7 MB in the beginning and 135.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:07,444 INFO L168 Benchmark]: TraceAbstraction took 1336.78 ms. Allocated memory is still 158.3 MB. Free memory was 135.3 MB in the beginning and 128.8 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:56:07,450 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 125.8 MB. Free memory was 96.4 MB in the beginning and 96.2 MB in the end (delta: 120.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 303.46 ms. Allocated memory is still 158.3 MB. Free memory was 134.0 MB in the beginning and 123.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.85 ms. Allocated memory is still 158.3 MB. Free memory was 123.5 MB in the beginning and 121.7 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 573.25 ms. Allocated memory is still 158.3 MB. Free memory was 121.7 MB in the beginning and 135.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1336.78 ms. Allocated memory is still 158.3 MB. Free memory was 135.3 MB in the beginning and 128.8 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 66. Possible FailurePath: [L13] static const float huge_ceil = 1.0e30; VAL [\old(huge_ceil)=1000000000000000000000000000004, huge_ceil=1000000000000000000000000000000] [L78] float x = 1.0f / 0.0f; VAL [huge_ceil=1000000000000000000000000000000] [L79] CALL, EXPR ceil_float(x) VAL [\old(x)=1000000000000000000000000000014, huge_ceil=1000000000000000000000000000000] [L16] __int32_t i0, j0; [L17] __uint32_t i, ix; VAL [\old(x)=1000000000000000000000000000014, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000014] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (i0) = gf_u.word [L23] ix = (i0 & 0x7fffffff) [L24] j0 = (ix >> 23) - 0x7f VAL [\old(x)=1000000000000000000000000000014, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-2, j0=384, x=1000000000000000000000000000014] [L25] COND FALSE !(j0 < 23) VAL [\old(x)=1000000000000000000000000000014, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-2, j0=384, x=1000000000000000000000000000014] [L45] COND TRUE !((ix) < 0x7f800000L) [L46] return x + x; VAL [\old(x)=1000000000000000000000000000014, huge_ceil=1000000000000000000000000000000, i=-36028792723996673, i0=-2, j0=384, x=1000000000000000000000000000014] [L79] RET, EXPR ceil_float(x) VAL [ceil_float(x)=1000000000000000000000000000003, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000014] [L79] float res = ceil_float(x); [L82] CALL, EXPR isinf_float(res) VAL [\old(x)=1000000000000000000000000000003, huge_ceil=1000000000000000000000000000000] [L60] __int32_t ix; VAL [\old(x)=1000000000000000000000000000003, huge_ceil=1000000000000000000000000000000, x=1000000000000000000000000000003] [L62] ieee_float_shape_type gf_u; [L63] gf_u.value = (x) [L64] EXPR gf_u.word [L64] (ix) = gf_u.word [L66] ix &= 0x7fffffff [L67] return ((ix) == 0x7f800000L); VAL [\old(x)=1000000000000000000000000000003, \result=0, huge_ceil=1000000000000000000000000000000, ix=0, x=1000000000000000000000000000003] [L82] RET, EXPR isinf_float(res) VAL [huge_ceil=1000000000000000000000000000000, isinf_float(res)=0, res=1000000000000000000000000000003, x=1000000000000000000000000000014] [L82] COND TRUE !isinf_float(res) [L83] CALL reach_error() VAL [huge_ceil=1000000000000000000000000000000] [L3] __assert_fail("0", "float_req_bl_1092c.c", 3, "reach_error") VAL [huge_ceil=1000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 SDtfs, 8 SDslu, 41 SDs, 0 SdLazy, 46 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1944 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...