/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_1010.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:20:11,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:20:11,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:20:11,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:20:11,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:20:11,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:20:11,900 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:20:11,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:20:11,910 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:20:11,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:20:11,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:20:11,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:20:11,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:20:11,943 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:20:11,944 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:20:11,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:20:11,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:20:11,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:20:11,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:20:11,966 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:20:11,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:20:11,973 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:20:11,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:20:11,975 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:20:11,978 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:20:11,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:20:11,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:20:11,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:20:11,992 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-19 17:20:12,021 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:20:12,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:20:12,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:20:12,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:20:12,023 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:20:12,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:20:12,024 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:20:12,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:20:12,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:20:12,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:20:12,025 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:20:12,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:20:12,025 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:20:12,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:20:12,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:20:12,026 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:20:12,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:20:12,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:20:12,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:20:12,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:20:12,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:20:12,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:20:12,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:20:12,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:20:12,028 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:20:12,028 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:20:12,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:20:12,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:20:12,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:20:12,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:20:12,483 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:20:12,486 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:20:12,488 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:20:12,489 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:20:12,490 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2021-02-19 17:20:12,590 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f7e5b9a/22110ddc68dd4047a05183242bdd1d9d/FLAG0f8abc0af [2021-02-19 17:20:13,309 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:20:13,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1010.c [2021-02-19 17:20:13,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f7e5b9a/22110ddc68dd4047a05183242bdd1d9d/FLAG0f8abc0af [2021-02-19 17:20:13,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c8f7e5b9a/22110ddc68dd4047a05183242bdd1d9d [2021-02-19 17:20:13,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:20:13,672 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:20:13,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:20:13,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:20:13,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:20:13,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dda1cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13, skipping insertion in model container [2021-02-19 17:20:13,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:20:13,708 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:20:13,875 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1010.c[999,1012] [2021-02-19 17:20:13,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:20:13,890 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:20:13,913 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1010.c[999,1012] [2021-02-19 17:20:13,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:20:13,933 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:20:13,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13 WrapperNode [2021-02-19 17:20:13,933 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:20:13,935 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:20:13,935 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:20:13,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:20:13,949 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,949 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,969 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... [2021-02-19 17:20:13,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:20:13,980 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:20:13,980 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:20:13,980 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:20:13,981 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:20:14,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:20:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:20:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:20:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_float [2021-02-19 17:20:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2021-02-19 17:20:14,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:20:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:20:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:20:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:20:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:20:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2021-02-19 17:20:14,148 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_float [2021-02-19 17:20:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2021-02-19 17:20:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-02-19 17:20:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:20:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:20:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:20:14,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-02-19 17:20:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:20:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:20:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:20:14,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:20:14,608 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:20:14,609 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-19 17:20:14,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:14 BoogieIcfgContainer [2021-02-19 17:20:14,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:20:14,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:20:14,613 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:20:14,616 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:20:14,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:20:13" (1/3) ... [2021-02-19 17:20:14,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681ea71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:14, skipping insertion in model container [2021-02-19 17:20:14,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:20:13" (2/3) ... [2021-02-19 17:20:14,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681ea71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:20:14, skipping insertion in model container [2021-02-19 17:20:14,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:20:14" (3/3) ... [2021-02-19 17:20:14,621 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1010.c [2021-02-19 17:20:14,629 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:20:14,634 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:20:14,657 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:20:14,688 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:20:14,688 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:20:14,688 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:20:14,688 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:20:14,689 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:20:14,689 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:20:14,689 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:20:14,689 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:20:14,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2021-02-19 17:20:14,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-19 17:20:14,718 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:14,719 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] [2021-02-19 17:20:14,719 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:14,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:14,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1139516502, now seen corresponding path program 1 times [2021-02-19 17:20:14,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:14,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595469734] [2021-02-19 17:20:14,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:14,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:14,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:14,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:14,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:14,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:15,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:20:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:15,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:15,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:15,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:20:15,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:15,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:15,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:15,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:15,178 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:15,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-19 17:20:15,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:20:15,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:20:15,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:20:15,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:20:15,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595469734] [2021-02-19 17:20:15,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:20:15,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-19 17:20:15,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113833896] [2021-02-19 17:20:15,208 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-19 17:20:15,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:20:15,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-19 17:20:15,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-19 17:20:15,230 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2021-02-19 17:20:15,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:20:15,462 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2021-02-19 17:20:15,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:20:15,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2021-02-19 17:20:15,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:20:15,483 INFO L225 Difference]: With dead ends: 48 [2021-02-19 17:20:15,483 INFO L226 Difference]: Without dead ends: 24 [2021-02-19 17:20:15,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:20:15,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-02-19 17:20:15,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2021-02-19 17:20:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-02-19 17:20:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2021-02-19 17:20:15,537 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 21 [2021-02-19 17:20:15,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:20:15,538 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2021-02-19 17:20:15,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-19 17:20:15,539 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2021-02-19 17:20:15,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-19 17:20:15,540 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:20:15,540 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:20:15,541 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:20:15,541 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:20:15,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:20:15,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2015922745, now seen corresponding path program 1 times [2021-02-19 17:20:15,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:20:15,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833353600] [2021-02-19 17:20:15,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:20:15,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:15,625 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:20:15,701 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:20:15,754 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:20:15,754 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:20:15,755 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:20:15,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:20:15 BoogieIcfgContainer [2021-02-19 17:20:15,793 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:20:15,795 INFO L168 Benchmark]: Toolchain (without parser) took 2136.89 ms. Allocated memory was 174.1 MB in the beginning and 212.9 MB in the end (delta: 38.8 MB). Free memory was 155.8 MB in the beginning and 184.1 MB in the end (delta: -28.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:15,796 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 174.1 MB. Free memory is still 145.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:20:15,797 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.72 ms. Allocated memory is still 174.1 MB. Free memory was 154.5 MB in the beginning and 144.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:15,798 INFO L168 Benchmark]: Boogie Preprocessor took 44.44 ms. Allocated memory is still 174.1 MB. Free memory was 144.3 MB in the beginning and 142.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:15,799 INFO L168 Benchmark]: RCFGBuilder took 630.85 ms. Allocated memory is still 174.1 MB. Free memory was 142.6 MB in the beginning and 143.1 MB in the end (delta: -485.7 kB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:20:15,800 INFO L168 Benchmark]: TraceAbstraction took 1180.55 ms. Allocated memory was 174.1 MB in the beginning and 212.9 MB in the end (delta: 38.8 MB). Free memory was 142.8 MB in the beginning and 184.1 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:20:15,804 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 174.1 MB. Free memory is still 145.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.72 ms. Allocated memory is still 174.1 MB. Free memory was 154.5 MB in the beginning and 144.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.44 ms. Allocated memory is still 174.1 MB. Free memory was 144.3 MB in the beginning and 142.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 630.85 ms. Allocated memory is still 174.1 MB. Free memory was 142.6 MB in the beginning and 143.1 MB in the end (delta: -485.7 kB). Peak memory consumption was 4.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1180.55 ms. Allocated memory was 174.1 MB in the beginning and 212.9 MB in the end (delta: 38.8 MB). Free memory was 142.8 MB in the beginning and 184.1 MB in the end (delta: -41.3 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 14, overapproximation of someBinaryArithmeticFLOAToperation at line 37, overapproximation of bitwiseAnd at line 25. Possible FailurePath: [L37] float x = 0.0f / 0.0f; [L38] CALL, EXPR fabs_float(x) VAL [\old(x)=55] [L17] __uint32_t ix; VAL [\old(x)=55, x=55] [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (ix) = gf_u.word [L24] ieee_float_shape_type sf_u; [L25] sf_u.word = (ix & 0x7fffffff) [L26] EXPR sf_u.value [L26] (x) = sf_u.value [L28] return x; VAL [\old(x)=55, \result=50, ix=60, x=50] [L38] RET, EXPR fabs_float(x) VAL [fabs_float(x)=50, x=55] [L38] float res = fabs_float(x); [L41] CALL, EXPR isnan_float(res) VAL [\old(x)=50] [L14] return x != x; VAL [\old(x)=50, \result=0, x=50] [L41] RET, EXPR isnan_float(res) VAL [isnan_float(res)=0, res=50, x=55] [L41] COND TRUE !isnan_float(res) [L42] reach_error() VAL [res=50, x=55] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 8 SDslu, 17 SDs, 0 SdLazy, 23 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 1240 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...