/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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_1252b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:06:02,393 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:06:02,396 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:06:02,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:06:02,415 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:06:02,417 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:06:02,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:06:02,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:06:02,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:06:02,436 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:06:02,438 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:06:02,441 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:06:02,441 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:06:02,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:06:02,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:06:02,446 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:06:02,447 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:06:02,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:06:02,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:06:02,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:06:02,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:06:02,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:06:02,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:06:02,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:06:02,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 22:06:02,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:06:02,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:06:02,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:06:02,480 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 [2020-07-17 22:06:02,517 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:06:02,517 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:06:02,520 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:06:02,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:06:02,521 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:06:02,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:06:02,521 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:06:02,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:06:02,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:06:02,522 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:06:02,522 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:06:02,522 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:06:02,522 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:06:02,523 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:06:02,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:06:02,523 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:06:02,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:06:02,525 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:06:02,525 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:06:02,525 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:06:02,526 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:06:02,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:06:02,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:06:02,527 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:06:02,527 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:06:02,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:06:02,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:06:02,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:06:02,528 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:06:02,528 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:06:02,836 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:06:02,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:06:02,855 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:06:02,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:06:02,857 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:06:02,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-07-17 22:06:02,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7fcc5f2/3e8b0da7a1004bb3949a168647fd2856/FLAG05f252e8b [2020-07-17 22:06:03,326 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:06:03,327 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252b.c [2020-07-17 22:06:03,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7fcc5f2/3e8b0da7a1004bb3949a168647fd2856/FLAG05f252e8b [2020-07-17 22:06:03,677 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd7fcc5f2/3e8b0da7a1004bb3949a168647fd2856 [2020-07-17 22:06:03,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:06:03,691 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:06:03,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:06:03,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:06:03,698 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:06:03,700 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:06:03" (1/1) ... [2020-07-17 22:06:03,703 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@197fa6d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:03, skipping insertion in model container [2020-07-17 22:06:03,703 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:06:03" (1/1) ... [2020-07-17 22:06:03,712 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:06:03,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:06:04,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:06:04,066 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:06:04,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:06:04,285 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:06:04,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04 WrapperNode [2020-07-17 22:06:04,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:06:04,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:06:04,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:06:04,287 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:06:04,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (1/1) ... [2020-07-17 22:06:04,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (1/1) ... [2020-07-17 22:06:04,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (1/1) ... [2020-07-17 22:06:04,328 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (1/1) ... [2020-07-17 22:06:04,359 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (1/1) ... [2020-07-17 22:06:04,370 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (1/1) ... [2020-07-17 22:06:04,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (1/1) ... [2020-07-17 22:06:04,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:06:04,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:06:04,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:06:04,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:06:04,386 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (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 [2020-07-17 22:06:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:06:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:06:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-07-17 22:06:04,445 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-07-17 22:06:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-17 22:06:04,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:06:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:06:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 22:06:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-07-17 22:06:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 22:06:04,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 22:06:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:06:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:06:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-07-17 22:06:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-17 22:06:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:06:04,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:06:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:06:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:06:04,448 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 22:06:04,946 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:06:04,946 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-17 22:06:04,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:06:04 BoogieIcfgContainer [2020-07-17 22:06:04,950 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:06:04,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:06:04,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:06:04,955 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:06:04,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:06:03" (1/3) ... [2020-07-17 22:06:04,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f9fe67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:06:04, skipping insertion in model container [2020-07-17 22:06:04,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:06:04" (2/3) ... [2020-07-17 22:06:04,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10f9fe67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:06:04, skipping insertion in model container [2020-07-17 22:06:04,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:06:04" (3/3) ... [2020-07-17 22:06:04,959 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252b.c [2020-07-17 22:06:04,970 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:06:04,979 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 22:06:04,992 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 22:06:05,016 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:06:05,016 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:06:05,017 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:06:05,017 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:06:05,017 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:06:05,017 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:06:05,018 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:06:05,018 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:06:05,038 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-17 22:06:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-17 22:06:05,045 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:06:05,046 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] [2020-07-17 22:06:05,046 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:06:05,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:06:05,052 INFO L82 PathProgramCache]: Analyzing trace with hash 1078913502, now seen corresponding path program 1 times [2020-07-17 22:06:05,061 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:06:05,062 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232161748] [2020-07-17 22:06:05,062 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:06:05,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:05,264 INFO L280 TraceCheckUtils]: 0: Hoare triple {63#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {47#true} is VALID [2020-07-17 22:06:05,265 INFO L280 TraceCheckUtils]: 1: Hoare triple {47#true} assume true; {47#true} is VALID [2020-07-17 22:06:05,267 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {47#true} {47#true} #98#return; {47#true} is VALID [2020-07-17 22:06:05,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:05,327 INFO L280 TraceCheckUtils]: 0: Hoare triple {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {47#true} is VALID [2020-07-17 22:06:05,329 INFO L280 TraceCheckUtils]: 1: Hoare triple {47#true} assume !true; {48#false} is VALID [2020-07-17 22:06:05,329 INFO L280 TraceCheckUtils]: 2: Hoare triple {48#false} assume 0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296;#res := 2; {48#false} is VALID [2020-07-17 22:06:05,330 INFO L280 TraceCheckUtils]: 3: Hoare triple {48#false} assume true; {48#false} is VALID [2020-07-17 22:06:05,330 INFO L275 TraceCheckUtils]: 4: Hoare quadruple {48#false} {47#true} #94#return; {48#false} is VALID [2020-07-17 22:06:05,331 INFO L280 TraceCheckUtils]: 0: Hoare triple {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;~y := #in~y; {47#true} is VALID [2020-07-17 22:06:05,334 INFO L263 TraceCheckUtils]: 1: Hoare triple {47#true} call #t~ret2 := __fpclassify_float(~x); {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:05,334 INFO L280 TraceCheckUtils]: 2: Hoare triple {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {47#true} is VALID [2020-07-17 22:06:05,335 INFO L280 TraceCheckUtils]: 3: Hoare triple {47#true} assume !true; {48#false} is VALID [2020-07-17 22:06:05,336 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#false} assume 0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296;#res := 2; {48#false} is VALID [2020-07-17 22:06:05,336 INFO L280 TraceCheckUtils]: 5: Hoare triple {48#false} assume true; {48#false} is VALID [2020-07-17 22:06:05,337 INFO L275 TraceCheckUtils]: 6: Hoare quadruple {48#false} {47#true} #94#return; {48#false} is VALID [2020-07-17 22:06:05,337 INFO L280 TraceCheckUtils]: 7: Hoare triple {48#false} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647; {48#false} is VALID [2020-07-17 22:06:05,337 INFO L280 TraceCheckUtils]: 8: Hoare triple {48#false} assume 0 == #t~ret2;havoc #t~ret2;#res := ~y; {48#false} is VALID [2020-07-17 22:06:05,338 INFO L280 TraceCheckUtils]: 9: Hoare triple {48#false} assume true; {48#false} is VALID [2020-07-17 22:06:05,338 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {48#false} {47#true} #90#return; {48#false} is VALID [2020-07-17 22:06:05,341 INFO L263 TraceCheckUtils]: 0: Hoare triple {47#true} call ULTIMATE.init(); {63#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:06:05,342 INFO L280 TraceCheckUtils]: 1: Hoare triple {63#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {47#true} is VALID [2020-07-17 22:06:05,342 INFO L280 TraceCheckUtils]: 2: Hoare triple {47#true} assume true; {47#true} is VALID [2020-07-17 22:06:05,342 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {47#true} {47#true} #98#return; {47#true} is VALID [2020-07-17 22:06:05,343 INFO L263 TraceCheckUtils]: 4: Hoare triple {47#true} call #t~ret10 := main(); {47#true} is VALID [2020-07-17 22:06:05,343 INFO L280 TraceCheckUtils]: 5: Hoare triple {47#true} ~x~0 := 0.0;~y~0 := ~someUnaryFLOAToperation(0.0); {47#true} is VALID [2020-07-17 22:06:05,346 INFO L263 TraceCheckUtils]: 6: Hoare triple {47#true} call #t~ret7 := fmax_float(~x~0, ~y~0); {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:05,346 INFO L280 TraceCheckUtils]: 7: Hoare triple {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;~y := #in~y; {47#true} is VALID [2020-07-17 22:06:05,349 INFO L263 TraceCheckUtils]: 8: Hoare triple {47#true} call #t~ret2 := __fpclassify_float(~x); {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:05,349 INFO L280 TraceCheckUtils]: 9: Hoare triple {64#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {47#true} is VALID [2020-07-17 22:06:05,350 INFO L280 TraceCheckUtils]: 10: Hoare triple {47#true} assume !true; {48#false} is VALID [2020-07-17 22:06:05,351 INFO L280 TraceCheckUtils]: 11: Hoare triple {48#false} assume 0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296;#res := 2; {48#false} is VALID [2020-07-17 22:06:05,351 INFO L280 TraceCheckUtils]: 12: Hoare triple {48#false} assume true; {48#false} is VALID [2020-07-17 22:06:05,351 INFO L275 TraceCheckUtils]: 13: Hoare quadruple {48#false} {47#true} #94#return; {48#false} is VALID [2020-07-17 22:06:05,352 INFO L280 TraceCheckUtils]: 14: Hoare triple {48#false} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647; {48#false} is VALID [2020-07-17 22:06:05,352 INFO L280 TraceCheckUtils]: 15: Hoare triple {48#false} assume 0 == #t~ret2;havoc #t~ret2;#res := ~y; {48#false} is VALID [2020-07-17 22:06:05,353 INFO L280 TraceCheckUtils]: 16: Hoare triple {48#false} assume true; {48#false} is VALID [2020-07-17 22:06:05,353 INFO L275 TraceCheckUtils]: 17: Hoare quadruple {48#false} {47#true} #90#return; {48#false} is VALID [2020-07-17 22:06:05,354 INFO L280 TraceCheckUtils]: 18: Hoare triple {48#false} ~res~0 := #t~ret7;havoc #t~ret7;#t~short9 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); {48#false} is VALID [2020-07-17 22:06:05,354 INFO L280 TraceCheckUtils]: 19: Hoare triple {48#false} assume !#t~short9; {48#false} is VALID [2020-07-17 22:06:05,354 INFO L280 TraceCheckUtils]: 20: Hoare triple {48#false} assume !#t~short9;havoc #t~short9;havoc #t~ret8; {48#false} is VALID [2020-07-17 22:06:05,355 INFO L280 TraceCheckUtils]: 21: Hoare triple {48#false} assume !false; {48#false} is VALID [2020-07-17 22:06:05,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:06:05,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232161748] [2020-07-17 22:06:05,362 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:06:05,362 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:06:05,363 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948273297] [2020-07-17 22:06:05,370 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-17 22:06:05,373 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:06:05,382 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:06:05,442 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:05,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:06:05,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:06:05,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:06:05,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:06:05,456 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-07-17 22:06:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:05,947 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-07-17 22:06:05,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:06:05,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-17 22:06:05,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:06:05,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:06:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2020-07-17 22:06:05,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:06:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 107 transitions. [2020-07-17 22:06:05,970 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 107 transitions. [2020-07-17 22:06:06,133 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 107 edges. 107 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:06,147 INFO L225 Difference]: With dead ends: 79 [2020-07-17 22:06:06,147 INFO L226 Difference]: Without dead ends: 40 [2020-07-17 22:06:06,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:06:06,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-17 22:06:06,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-17 22:06:06,222 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:06:06,223 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand 40 states. [2020-07-17 22:06:06,223 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2020-07-17 22:06:06,224 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2020-07-17 22:06:06,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:06,231 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-07-17 22:06:06,231 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-17 22:06:06,232 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:06,232 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:06,232 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand 40 states. [2020-07-17 22:06:06,233 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 40 states. [2020-07-17 22:06:06,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:06,238 INFO L93 Difference]: Finished difference Result 40 states and 48 transitions. [2020-07-17 22:06:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-17 22:06:06,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:06,239 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:06,240 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:06:06,240 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:06:06,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 22:06:06,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-07-17 22:06:06,246 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-07-17 22:06:06,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:06:06,246 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-07-17 22:06:06,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:06:06,247 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-07-17 22:06:06,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 22:06:06,248 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:06:06,248 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] [2020-07-17 22:06:06,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:06:06,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:06:06,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:06:06,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269066, now seen corresponding path program 1 times [2020-07-17 22:06:06,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:06:06,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293895988] [2020-07-17 22:06:06,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:06:06,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:06,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:06,347 INFO L280 TraceCheckUtils]: 0: Hoare triple {323#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {306#true} is VALID [2020-07-17 22:06:06,347 INFO L280 TraceCheckUtils]: 1: Hoare triple {306#true} assume true; {306#true} is VALID [2020-07-17 22:06:06,347 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {306#true} {306#true} #98#return; {306#true} is VALID [2020-07-17 22:06:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:06,484 INFO L280 TraceCheckUtils]: 0: Hoare triple {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {306#true} is VALID [2020-07-17 22:06:06,484 INFO L280 TraceCheckUtils]: 1: Hoare triple {306#true} call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.allocOnStack(4);call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4);call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4);~w~0 := #t~mem0;call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4);havoc #t~union1;havoc #t~mem0;call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset);havoc ~#gf_u~0.base, ~#gf_u~0.offset; {306#true} is VALID [2020-07-17 22:06:06,485 INFO L280 TraceCheckUtils]: 2: Hoare triple {306#true} goto; {306#true} is VALID [2020-07-17 22:06:06,486 INFO L280 TraceCheckUtils]: 3: Hoare triple {306#true} assume 0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296;#res := 2; {332#(<= 2 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:06,486 INFO L280 TraceCheckUtils]: 4: Hoare triple {332#(<= 2 |__fpclassify_float_#res|)} assume true; {332#(<= 2 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:06,488 INFO L275 TraceCheckUtils]: 5: Hoare quadruple {332#(<= 2 |__fpclassify_float_#res|)} {306#true} #94#return; {331#(<= 2 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:06,488 INFO L280 TraceCheckUtils]: 0: Hoare triple {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;~y := #in~y; {306#true} is VALID [2020-07-17 22:06:06,493 INFO L263 TraceCheckUtils]: 1: Hoare triple {306#true} call #t~ret2 := __fpclassify_float(~x); {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:06,493 INFO L280 TraceCheckUtils]: 2: Hoare triple {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {306#true} is VALID [2020-07-17 22:06:06,494 INFO L280 TraceCheckUtils]: 3: Hoare triple {306#true} call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.allocOnStack(4);call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4);call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4);~w~0 := #t~mem0;call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4);havoc #t~union1;havoc #t~mem0;call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset);havoc ~#gf_u~0.base, ~#gf_u~0.offset; {306#true} is VALID [2020-07-17 22:06:06,494 INFO L280 TraceCheckUtils]: 4: Hoare triple {306#true} goto; {306#true} is VALID [2020-07-17 22:06:06,495 INFO L280 TraceCheckUtils]: 5: Hoare triple {306#true} assume 0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296;#res := 2; {332#(<= 2 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:06,496 INFO L280 TraceCheckUtils]: 6: Hoare triple {332#(<= 2 |__fpclassify_float_#res|)} assume true; {332#(<= 2 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:06,497 INFO L275 TraceCheckUtils]: 7: Hoare quadruple {332#(<= 2 |__fpclassify_float_#res|)} {306#true} #94#return; {331#(<= 2 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:06,498 INFO L280 TraceCheckUtils]: 8: Hoare triple {331#(<= 2 |fmax_float_#t~ret2|)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647; {331#(<= 2 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:06,499 INFO L280 TraceCheckUtils]: 9: Hoare triple {331#(<= 2 |fmax_float_#t~ret2|)} assume 0 == #t~ret2;havoc #t~ret2;#res := ~y; {307#false} is VALID [2020-07-17 22:06:06,500 INFO L280 TraceCheckUtils]: 10: Hoare triple {307#false} assume true; {307#false} is VALID [2020-07-17 22:06:06,500 INFO L275 TraceCheckUtils]: 11: Hoare quadruple {307#false} {306#true} #90#return; {307#false} is VALID [2020-07-17 22:06:06,506 INFO L263 TraceCheckUtils]: 0: Hoare triple {306#true} call ULTIMATE.init(); {323#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:06:06,506 INFO L280 TraceCheckUtils]: 1: Hoare triple {323#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {306#true} is VALID [2020-07-17 22:06:06,507 INFO L280 TraceCheckUtils]: 2: Hoare triple {306#true} assume true; {306#true} is VALID [2020-07-17 22:06:06,508 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {306#true} {306#true} #98#return; {306#true} is VALID [2020-07-17 22:06:06,508 INFO L263 TraceCheckUtils]: 4: Hoare triple {306#true} call #t~ret10 := main(); {306#true} is VALID [2020-07-17 22:06:06,508 INFO L280 TraceCheckUtils]: 5: Hoare triple {306#true} ~x~0 := 0.0;~y~0 := ~someUnaryFLOAToperation(0.0); {306#true} is VALID [2020-07-17 22:06:06,510 INFO L263 TraceCheckUtils]: 6: Hoare triple {306#true} call #t~ret7 := fmax_float(~x~0, ~y~0); {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:06,510 INFO L280 TraceCheckUtils]: 7: Hoare triple {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;~y := #in~y; {306#true} is VALID [2020-07-17 22:06:06,512 INFO L263 TraceCheckUtils]: 8: Hoare triple {306#true} call #t~ret2 := __fpclassify_float(~x); {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:06,512 INFO L280 TraceCheckUtils]: 9: Hoare triple {324#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {306#true} is VALID [2020-07-17 22:06:06,512 INFO L280 TraceCheckUtils]: 10: Hoare triple {306#true} call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.allocOnStack(4);call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4);call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4);~w~0 := #t~mem0;call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4);havoc #t~union1;havoc #t~mem0;call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset);havoc ~#gf_u~0.base, ~#gf_u~0.offset; {306#true} is VALID [2020-07-17 22:06:06,513 INFO L280 TraceCheckUtils]: 11: Hoare triple {306#true} goto; {306#true} is VALID [2020-07-17 22:06:06,514 INFO L280 TraceCheckUtils]: 12: Hoare triple {306#true} assume 0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296;#res := 2; {332#(<= 2 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:06,515 INFO L280 TraceCheckUtils]: 13: Hoare triple {332#(<= 2 |__fpclassify_float_#res|)} assume true; {332#(<= 2 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:06,516 INFO L275 TraceCheckUtils]: 14: Hoare quadruple {332#(<= 2 |__fpclassify_float_#res|)} {306#true} #94#return; {331#(<= 2 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:06,517 INFO L280 TraceCheckUtils]: 15: Hoare triple {331#(<= 2 |fmax_float_#t~ret2|)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647; {331#(<= 2 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:06,517 INFO L280 TraceCheckUtils]: 16: Hoare triple {331#(<= 2 |fmax_float_#t~ret2|)} assume 0 == #t~ret2;havoc #t~ret2;#res := ~y; {307#false} is VALID [2020-07-17 22:06:06,518 INFO L280 TraceCheckUtils]: 17: Hoare triple {307#false} assume true; {307#false} is VALID [2020-07-17 22:06:06,518 INFO L275 TraceCheckUtils]: 18: Hoare quadruple {307#false} {306#true} #90#return; {307#false} is VALID [2020-07-17 22:06:06,518 INFO L280 TraceCheckUtils]: 19: Hoare triple {307#false} ~res~0 := #t~ret7;havoc #t~ret7;#t~short9 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); {307#false} is VALID [2020-07-17 22:06:06,519 INFO L280 TraceCheckUtils]: 20: Hoare triple {307#false} assume !#t~short9; {307#false} is VALID [2020-07-17 22:06:06,519 INFO L280 TraceCheckUtils]: 21: Hoare triple {307#false} assume !#t~short9;havoc #t~short9;havoc #t~ret8; {307#false} is VALID [2020-07-17 22:06:06,519 INFO L280 TraceCheckUtils]: 22: Hoare triple {307#false} assume !false; {307#false} is VALID [2020-07-17 22:06:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:06:06,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293895988] [2020-07-17 22:06:06,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:06:06,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:06:06,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895745218] [2020-07-17 22:06:06,525 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-17 22:06:06,526 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:06:06,526 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:06:06,561 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:06,561 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:06:06,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:06:06,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:06:06,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:06:06,564 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-07-17 22:06:07,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:07,291 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-07-17 22:06:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:06:07,292 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-07-17 22:06:07,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:06:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:06:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2020-07-17 22:06:07,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:06:07,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2020-07-17 22:06:07,310 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 69 transitions. [2020-07-17 22:06:07,431 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:07,435 INFO L225 Difference]: With dead ends: 59 [2020-07-17 22:06:07,435 INFO L226 Difference]: Without dead ends: 44 [2020-07-17 22:06:07,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-17 22:06:07,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-07-17 22:06:07,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-07-17 22:06:07,475 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:06:07,475 INFO L82 GeneralOperation]: Start isEquivalent. First operand 44 states. Second operand 44 states. [2020-07-17 22:06:07,475 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 44 states. [2020-07-17 22:06:07,475 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 44 states. [2020-07-17 22:06:07,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:07,480 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-07-17 22:06:07,480 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-17 22:06:07,481 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:07,481 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:07,481 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 44 states. [2020-07-17 22:06:07,481 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 44 states. [2020-07-17 22:06:07,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:07,486 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-07-17 22:06:07,486 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-17 22:06:07,487 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:07,487 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:07,487 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:06:07,487 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:06:07,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-17 22:06:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-17 22:06:07,491 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-07-17 22:06:07,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:06:07,491 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-17 22:06:07,492 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:06:07,492 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-17 22:06:07,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 22:06:07,493 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:06:07,493 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] [2020-07-17 22:06:07,494 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:06:07,494 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:06:07,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:06:07,494 INFO L82 PathProgramCache]: Analyzing trace with hash 888409989, now seen corresponding path program 1 times [2020-07-17 22:06:07,495 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:06:07,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358408342] [2020-07-17 22:06:07,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:06:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:07,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:07,556 INFO L280 TraceCheckUtils]: 0: Hoare triple {582#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {562#true} is VALID [2020-07-17 22:06:07,556 INFO L280 TraceCheckUtils]: 1: Hoare triple {562#true} assume true; {562#true} is VALID [2020-07-17 22:06:07,557 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {562#true} {562#true} #98#return; {562#true} is VALID [2020-07-17 22:06:07,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:07,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:06:07,697 INFO L280 TraceCheckUtils]: 0: Hoare triple {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {562#true} is VALID [2020-07-17 22:06:07,698 INFO L280 TraceCheckUtils]: 1: Hoare triple {562#true} call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.allocOnStack(4);call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4);call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4);~w~0 := #t~mem0;call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4);havoc #t~union1;havoc #t~mem0;call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset);havoc ~#gf_u~0.base, ~#gf_u~0.offset; {562#true} is VALID [2020-07-17 22:06:07,698 INFO L280 TraceCheckUtils]: 2: Hoare triple {562#true} goto; {562#true} is VALID [2020-07-17 22:06:07,698 INFO L280 TraceCheckUtils]: 3: Hoare triple {562#true} assume !(0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296); {562#true} is VALID [2020-07-17 22:06:07,699 INFO L280 TraceCheckUtils]: 4: Hoare triple {562#true} assume !((~w~0 % 4294967296 >= 8388608 && ~w~0 % 4294967296 <= 2139095039) || (~w~0 % 4294967296 >= 2155872256 && ~w~0 % 4294967296 <= 4286578687)); {562#true} is VALID [2020-07-17 22:06:07,699 INFO L280 TraceCheckUtils]: 5: Hoare triple {562#true} assume !((~w~0 % 4294967296 >= 1 && ~w~0 % 4294967296 <= 8388607) || (~w~0 % 4294967296 >= 2147483649 && ~w~0 % 4294967296 <= 2155872255)); {562#true} is VALID [2020-07-17 22:06:07,700 INFO L280 TraceCheckUtils]: 6: Hoare triple {562#true} assume 2139095040 == ~w~0 % 4294967296 || 4286578688 == ~w~0 % 4294967296;#res := 1; {594#(<= 1 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:07,701 INFO L280 TraceCheckUtils]: 7: Hoare triple {594#(<= 1 |__fpclassify_float_#res|)} assume true; {594#(<= 1 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:07,702 INFO L275 TraceCheckUtils]: 8: Hoare quadruple {594#(<= 1 |__fpclassify_float_#res|)} {562#true} #94#return; {593#(<= 1 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:07,702 INFO L280 TraceCheckUtils]: 0: Hoare triple {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;~y := #in~y; {562#true} is VALID [2020-07-17 22:06:07,703 INFO L263 TraceCheckUtils]: 1: Hoare triple {562#true} call #t~ret2 := __fpclassify_float(~x); {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:07,704 INFO L280 TraceCheckUtils]: 2: Hoare triple {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {562#true} is VALID [2020-07-17 22:06:07,704 INFO L280 TraceCheckUtils]: 3: Hoare triple {562#true} call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.allocOnStack(4);call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4);call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4);~w~0 := #t~mem0;call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4);havoc #t~union1;havoc #t~mem0;call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset);havoc ~#gf_u~0.base, ~#gf_u~0.offset; {562#true} is VALID [2020-07-17 22:06:07,704 INFO L280 TraceCheckUtils]: 4: Hoare triple {562#true} goto; {562#true} is VALID [2020-07-17 22:06:07,705 INFO L280 TraceCheckUtils]: 5: Hoare triple {562#true} assume !(0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296); {562#true} is VALID [2020-07-17 22:06:07,705 INFO L280 TraceCheckUtils]: 6: Hoare triple {562#true} assume !((~w~0 % 4294967296 >= 8388608 && ~w~0 % 4294967296 <= 2139095039) || (~w~0 % 4294967296 >= 2155872256 && ~w~0 % 4294967296 <= 4286578687)); {562#true} is VALID [2020-07-17 22:06:07,705 INFO L280 TraceCheckUtils]: 7: Hoare triple {562#true} assume !((~w~0 % 4294967296 >= 1 && ~w~0 % 4294967296 <= 8388607) || (~w~0 % 4294967296 >= 2147483649 && ~w~0 % 4294967296 <= 2155872255)); {562#true} is VALID [2020-07-17 22:06:07,706 INFO L280 TraceCheckUtils]: 8: Hoare triple {562#true} assume 2139095040 == ~w~0 % 4294967296 || 4286578688 == ~w~0 % 4294967296;#res := 1; {594#(<= 1 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:07,707 INFO L280 TraceCheckUtils]: 9: Hoare triple {594#(<= 1 |__fpclassify_float_#res|)} assume true; {594#(<= 1 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:07,708 INFO L275 TraceCheckUtils]: 10: Hoare quadruple {594#(<= 1 |__fpclassify_float_#res|)} {562#true} #94#return; {593#(<= 1 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:07,708 INFO L280 TraceCheckUtils]: 11: Hoare triple {593#(<= 1 |fmax_float_#t~ret2|)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647; {593#(<= 1 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:07,709 INFO L280 TraceCheckUtils]: 12: Hoare triple {593#(<= 1 |fmax_float_#t~ret2|)} assume 0 == #t~ret2;havoc #t~ret2;#res := ~y; {563#false} is VALID [2020-07-17 22:06:07,709 INFO L280 TraceCheckUtils]: 13: Hoare triple {563#false} assume true; {563#false} is VALID [2020-07-17 22:06:07,709 INFO L275 TraceCheckUtils]: 14: Hoare quadruple {563#false} {562#true} #90#return; {563#false} is VALID [2020-07-17 22:06:07,711 INFO L263 TraceCheckUtils]: 0: Hoare triple {562#true} call ULTIMATE.init(); {582#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:06:07,711 INFO L280 TraceCheckUtils]: 1: Hoare triple {582#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {562#true} is VALID [2020-07-17 22:06:07,711 INFO L280 TraceCheckUtils]: 2: Hoare triple {562#true} assume true; {562#true} is VALID [2020-07-17 22:06:07,712 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {562#true} {562#true} #98#return; {562#true} is VALID [2020-07-17 22:06:07,712 INFO L263 TraceCheckUtils]: 4: Hoare triple {562#true} call #t~ret10 := main(); {562#true} is VALID [2020-07-17 22:06:07,712 INFO L280 TraceCheckUtils]: 5: Hoare triple {562#true} ~x~0 := 0.0;~y~0 := ~someUnaryFLOAToperation(0.0); {562#true} is VALID [2020-07-17 22:06:07,713 INFO L263 TraceCheckUtils]: 6: Hoare triple {562#true} call #t~ret7 := fmax_float(~x~0, ~y~0); {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:07,714 INFO L280 TraceCheckUtils]: 7: Hoare triple {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;~y := #in~y; {562#true} is VALID [2020-07-17 22:06:07,715 INFO L263 TraceCheckUtils]: 8: Hoare triple {562#true} call #t~ret2 := __fpclassify_float(~x); {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} is VALID [2020-07-17 22:06:07,715 INFO L280 TraceCheckUtils]: 9: Hoare triple {583#(and (= |#memory_real| |old(#memory_real)|) (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |old(#length)| |#length|))} ~x := #in~x;havoc ~w~0; {562#true} is VALID [2020-07-17 22:06:07,715 INFO L280 TraceCheckUtils]: 10: Hoare triple {562#true} call ~#gf_u~0.base, ~#gf_u~0.offset := #Ultimate.allocOnStack(4);call write~real(~x, ~#gf_u~0.base, ~#gf_u~0.offset, 4);call #t~mem0 := read~int(~#gf_u~0.base, ~#gf_u~0.offset, 4);~w~0 := #t~mem0;call write~real(#t~union1, ~#gf_u~0.base, ~#gf_u~0.offset, 4);havoc #t~union1;havoc #t~mem0;call ULTIMATE.dealloc(~#gf_u~0.base, ~#gf_u~0.offset);havoc ~#gf_u~0.base, ~#gf_u~0.offset; {562#true} is VALID [2020-07-17 22:06:07,716 INFO L280 TraceCheckUtils]: 11: Hoare triple {562#true} goto; {562#true} is VALID [2020-07-17 22:06:07,716 INFO L280 TraceCheckUtils]: 12: Hoare triple {562#true} assume !(0 == ~w~0 % 4294967296 || 2147483648 == ~w~0 % 4294967296); {562#true} is VALID [2020-07-17 22:06:07,716 INFO L280 TraceCheckUtils]: 13: Hoare triple {562#true} assume !((~w~0 % 4294967296 >= 8388608 && ~w~0 % 4294967296 <= 2139095039) || (~w~0 % 4294967296 >= 2155872256 && ~w~0 % 4294967296 <= 4286578687)); {562#true} is VALID [2020-07-17 22:06:07,716 INFO L280 TraceCheckUtils]: 14: Hoare triple {562#true} assume !((~w~0 % 4294967296 >= 1 && ~w~0 % 4294967296 <= 8388607) || (~w~0 % 4294967296 >= 2147483649 && ~w~0 % 4294967296 <= 2155872255)); {562#true} is VALID [2020-07-17 22:06:07,717 INFO L280 TraceCheckUtils]: 15: Hoare triple {562#true} assume 2139095040 == ~w~0 % 4294967296 || 4286578688 == ~w~0 % 4294967296;#res := 1; {594#(<= 1 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:07,718 INFO L280 TraceCheckUtils]: 16: Hoare triple {594#(<= 1 |__fpclassify_float_#res|)} assume true; {594#(<= 1 |__fpclassify_float_#res|)} is VALID [2020-07-17 22:06:07,719 INFO L275 TraceCheckUtils]: 17: Hoare quadruple {594#(<= 1 |__fpclassify_float_#res|)} {562#true} #94#return; {593#(<= 1 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:07,720 INFO L280 TraceCheckUtils]: 18: Hoare triple {593#(<= 1 |fmax_float_#t~ret2|)} assume -2147483648 <= #t~ret2 && #t~ret2 <= 2147483647; {593#(<= 1 |fmax_float_#t~ret2|)} is VALID [2020-07-17 22:06:07,720 INFO L280 TraceCheckUtils]: 19: Hoare triple {593#(<= 1 |fmax_float_#t~ret2|)} assume 0 == #t~ret2;havoc #t~ret2;#res := ~y; {563#false} is VALID [2020-07-17 22:06:07,721 INFO L280 TraceCheckUtils]: 20: Hoare triple {563#false} assume true; {563#false} is VALID [2020-07-17 22:06:07,721 INFO L275 TraceCheckUtils]: 21: Hoare quadruple {563#false} {562#true} #90#return; {563#false} is VALID [2020-07-17 22:06:07,721 INFO L280 TraceCheckUtils]: 22: Hoare triple {563#false} ~res~0 := #t~ret7;havoc #t~ret7;#t~short9 := ~someBinaryFLOATComparisonOperation(~res~0, 0.0); {563#false} is VALID [2020-07-17 22:06:07,721 INFO L280 TraceCheckUtils]: 23: Hoare triple {563#false} assume !#t~short9; {563#false} is VALID [2020-07-17 22:06:07,722 INFO L280 TraceCheckUtils]: 24: Hoare triple {563#false} assume !#t~short9;havoc #t~short9;havoc #t~ret8; {563#false} is VALID [2020-07-17 22:06:07,722 INFO L280 TraceCheckUtils]: 25: Hoare triple {563#false} assume !false; {563#false} is VALID [2020-07-17 22:06:07,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 22:06:07,723 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358408342] [2020-07-17 22:06:07,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:06:07,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 22:06:07,724 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903772230] [2020-07-17 22:06:07,725 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-17 22:06:07,725 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:06:07,725 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states. [2020-07-17 22:06:07,776 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 26 edges. 26 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:07,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 22:06:07,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:06:07,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 22:06:07,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:06:07,778 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-07-17 22:06:08,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:08,313 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-07-17 22:06:08,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 22:06:08,313 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-17 22:06:08,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:06:08,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:06:08,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2020-07-17 22:06:08,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2020-07-17 22:06:08,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2020-07-17 22:06:08,320 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 69 transitions. [2020-07-17 22:06:08,419 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 69 edges. 69 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:06:08,423 INFO L225 Difference]: With dead ends: 63 [2020-07-17 22:06:08,423 INFO L226 Difference]: Without dead ends: 48 [2020-07-17 22:06:08,424 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-07-17 22:06:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-17 22:06:08,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-07-17 22:06:08,460 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:06:08,460 INFO L82 GeneralOperation]: Start isEquivalent. First operand 48 states. Second operand 44 states. [2020-07-17 22:06:08,460 INFO L74 IsIncluded]: Start isIncluded. First operand 48 states. Second operand 44 states. [2020-07-17 22:06:08,460 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 44 states. [2020-07-17 22:06:08,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:08,464 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-07-17 22:06:08,464 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-07-17 22:06:08,465 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:08,465 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:08,465 INFO L74 IsIncluded]: Start isIncluded. First operand 44 states. Second operand 48 states. [2020-07-17 22:06:08,466 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 48 states. [2020-07-17 22:06:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:06:08,469 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-07-17 22:06:08,470 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-07-17 22:06:08,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:06:08,471 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:06:08,471 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:06:08,471 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:06:08,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-17 22:06:08,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-07-17 22:06:08,474 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-07-17 22:06:08,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:06:08,474 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-07-17 22:06:08,482 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 22:06:08,483 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-07-17 22:06:08,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 22:06:08,484 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:06:08,484 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] [2020-07-17 22:06:08,484 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 22:06:08,484 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:06:08,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:06:08,485 INFO L82 PathProgramCache]: Analyzing trace with hash -908541370, now seen corresponding path program 1 times [2020-07-17 22:06:08,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:06:08,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316184722] [2020-07-17 22:06:08,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:06:08,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:06:08,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:06:08,771 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:06:08,772 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:06:08,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 22:06:08,817 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:06:08,817 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:06:08,818 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:06:08,818 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:06:08,818 WARN L170 areAnnotationChecker]: fmax_floatENTRY has no Hoare annotation [2020-07-17 22:06:08,818 WARN L170 areAnnotationChecker]: __fpclassify_floatENTRY has no Hoare annotation [2020-07-17 22:06:08,818 WARN L170 areAnnotationChecker]: __signbit_floatENTRY has no Hoare annotation [2020-07-17 22:06:08,818 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:06:08,818 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L75 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L75 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L44 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L23-2 has no Hoare annotation [2020-07-17 22:06:08,819 WARN L170 areAnnotationChecker]: L57-2 has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: L57-2 has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: L75-1 has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: L44-1 has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: L23-1 has no Hoare annotation [2020-07-17 22:06:08,820 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L23-3 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L57-1 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L57-1 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L57-3 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L78 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L78 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L44-2 has no Hoare annotation [2020-07-17 22:06:08,821 WARN L170 areAnnotationChecker]: L44-2 has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: __fpclassify_floatFINAL has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: __signbit_floatFINAL has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: L78-1 has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: L78-1 has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: L78-4 has no Hoare annotation [2020-07-17 22:06:08,822 WARN L170 areAnnotationChecker]: L78-4 has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: fmax_floatFINAL has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: __fpclassify_floatEXIT has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: __fpclassify_floatEXIT has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: L34 has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: __signbit_floatEXIT has no Hoare annotation [2020-07-17 22:06:08,823 WARN L170 areAnnotationChecker]: L78-2 has no Hoare annotation [2020-07-17 22:06:08,824 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-17 22:06:08,824 WARN L170 areAnnotationChecker]: L79 has no Hoare annotation [2020-07-17 22:06:08,824 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:06:08,824 WARN L170 areAnnotationChecker]: fmax_floatEXIT has no Hoare annotation [2020-07-17 22:06:08,824 WARN L170 areAnnotationChecker]: L48-1 has no Hoare annotation [2020-07-17 22:06:08,824 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-17 22:06:08,824 WARN L170 areAnnotationChecker]: L37 has no Hoare annotation [2020-07-17 22:06:08,825 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:06:08,825 WARN L170 areAnnotationChecker]: L48-2 has no Hoare annotation [2020-07-17 22:06:08,825 WARN L170 areAnnotationChecker]: L48-2 has no Hoare annotation [2020-07-17 22:06:08,825 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-17 22:06:08,825 WARN L170 areAnnotationChecker]: L51 has no Hoare annotation [2020-07-17 22:06:08,825 WARN L170 areAnnotationChecker]: L51-2 has no Hoare annotation [2020-07-17 22:06:08,825 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:06:08,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:06:08 BoogieIcfgContainer [2020-07-17 22:06:08,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:06:08,831 INFO L168 Benchmark]: Toolchain (without parser) took 5141.35 ms. Allocated memory was 138.4 MB in the beginning and 272.6 MB in the end (delta: 134.2 MB). Free memory was 103.5 MB in the beginning and 221.2 MB in the end (delta: -117.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:08,832 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-17 22:06:08,833 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.97 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 103.1 MB in the beginning and 184.3 MB in the end (delta: -81.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:08,834 INFO L168 Benchmark]: Boogie Preprocessor took 96.31 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 181.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:08,835 INFO L168 Benchmark]: RCFGBuilder took 567.65 ms. Allocated memory is still 205.5 MB. Free memory was 181.7 MB in the beginning and 151.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-07-17 22:06:08,836 INFO L168 Benchmark]: TraceAbstraction took 3876.45 ms. Allocated memory was 205.5 MB in the beginning and 272.6 MB in the end (delta: 67.1 MB). Free memory was 150.6 MB in the beginning and 221.2 MB in the end (delta: -70.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 22:06:08,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 591.97 ms. Allocated memory was 138.4 MB in the beginning and 205.5 MB in the end (delta: 67.1 MB). Free memory was 103.1 MB in the beginning and 184.3 MB in the end (delta: -81.2 MB). Peak memory consumption was 24.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 96.31 ms. Allocated memory is still 205.5 MB. Free memory was 184.3 MB in the beginning and 181.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 567.65 ms. Allocated memory is still 205.5 MB. Free memory was 181.7 MB in the beginning and 151.3 MB in the end (delta: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3876.45 ms. Allocated memory was 205.5 MB in the beginning and 272.6 MB in the end (delta: 67.1 MB). Free memory was 150.6 MB in the beginning and 221.2 MB in the end (delta: -70.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 74. Possible FailurePath: [L73] float x = 0.0f; [L74] float y = -0.0f; VAL [x=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=0, \old(y)=2147483648] [L44] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=0] [L21] __uint32_t w; VAL [\old(x)=0, x=0] [L24] ieee_float_shape_type gf_u; [L25] gf_u.value = (x) [L26] EXPR gf_u.word [L26] (w) = gf_u.word [L29] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=0, w=2147483647, x=0] [L31-L32] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=0, w=2147483647, x=0] [L34-L35] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=0, w=2147483647, x=0] [L37] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L40] return 0; VAL [\old(x)=0, \result=0, w=2147483647, x=0] [L44] RET, EXPR __fpclassify_float(x) VAL [\old(x)=0, \old(y)=2147483648, __fpclassify_float(x)=0, x=0, y=2147483648] [L44] COND TRUE __fpclassify_float(x) == 0 [L45] return y; VAL [\old(x)=0, \old(y)=2147483648, \result=2147483648, x=0, y=2147483648] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=2147483648, x=0, y=2147483648] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=2147483648, res == 0.0f && __signbit_float(res) == 0=0, x=0, y=2147483648] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=2147483648, x=0, y=2147483648] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 2.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...