/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/double_req_bl_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:57:08,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:57:08,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:57:08,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:57:08,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:57:08,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:57:08,967 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:57:08,970 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:57:08,972 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:57:08,973 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:57:08,974 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:57:08,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:57:08,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:57:08,978 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:57:08,979 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:57:08,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:57:08,981 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:57:08,982 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:57:08,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:57:08,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:57:08,989 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:57:08,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:57:08,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:57:08,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:57:08,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 21:57:08,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 21:57:08,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 21:57:09,004 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 21:57:09,005 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 21:57:09,006 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 21:57:09,006 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 21:57:09,007 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 21:57:09,008 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 21:57:09,009 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 21:57:09,010 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 21:57:09,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 21:57:09,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 21:57:09,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 21:57:09,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:57:09,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:57:09,014 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:57:09,017 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 [2020-11-06 21:57:09,043 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:57:09,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:57:09,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:57:09,045 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:57:09,045 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:57:09,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:57:09,045 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:57:09,046 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:57:09,046 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:57:09,046 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:57:09,046 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:57:09,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:57:09,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:57:09,047 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:57:09,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:57:09,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:57:09,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:57:09,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:57:09,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:57:09,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:57:09,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:57:09,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:09,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:57:09,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:57:09,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:57:09,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:57:09,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:57:09,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:57:09,049 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:57:09,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:57:09,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:57:09,520 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:57:09,524 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:57:09,525 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:57:09,526 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:57:09,530 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-11-06 21:57:09,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a955f59b3/b55201daad61401f938267998525f03e/FLAGea25f162f [2020-11-06 21:57:10,243 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:57:10,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-11-06 21:57:10,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a955f59b3/b55201daad61401f938267998525f03e/FLAGea25f162f [2020-11-06 21:57:10,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a955f59b3/b55201daad61401f938267998525f03e [2020-11-06 21:57:10,602 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:57:10,610 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:57:10,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:10,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:57:10,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:57:10,618 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722d9ed8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10, skipping insertion in model container [2020-11-06 21:57:10,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:57:10,653 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:57:10,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:10,841 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:57:10,870 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:57:10,885 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:57:10,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10 WrapperNode [2020-11-06 21:57:10,886 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:57:10,887 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:57:10,888 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:57:10,888 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:57:10,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,911 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... [2020-11-06 21:57:10,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:57:10,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:57:10,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:57:10,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:57:10,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:57:11,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:57:11,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:57:11,018 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:57:11,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-11-06 21:57:11,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-11-06 21:57:11,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-11-06 21:57:11,020 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-11-06 21:57:11,021 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:57:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:57:11,021 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:57:11,022 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:57:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:57:11,023 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-11-06 21:57:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-11-06 21:57:11,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-11-06 21:57:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:57:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:57:11,026 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-11-06 21:57:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-11-06 21:57:11,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:57:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-11-06 21:57:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:57:11,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:57:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:57:11,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:57:11,620 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:57:11,620 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-11-06 21:57:11,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:11 BoogieIcfgContainer [2020-11-06 21:57:11,623 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:57:11,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:57:11,627 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:57:11,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:57:11,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:57:10" (1/3) ... [2020-11-06 21:57:11,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea9b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:11, skipping insertion in model container [2020-11-06 21:57:11,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:57:10" (2/3) ... [2020-11-06 21:57:11,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ea9b77f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:57:11, skipping insertion in model container [2020-11-06 21:57:11,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:57:11" (3/3) ... [2020-11-06 21:57:11,635 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-11-06 21:57:11,653 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:57:11,657 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:57:11,670 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:57:11,715 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:57:11,715 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:57:11,715 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:57:11,715 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:57:11,715 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:57:11,716 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:57:11,716 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:57:11,716 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:57:11,742 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-06 21:57:11,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-06 21:57:11,778 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:11,779 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] [2020-11-06 21:57:11,780 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:11,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1719514889, now seen corresponding path program 1 times [2020-11-06 21:57:11,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:11,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971894272] [2020-11-06 21:57:11,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:12,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 21:57:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:12,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-11-06 21:57:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-06 21:57:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 21:57:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 21:57:12,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971894272] [2020-11-06 21:57:12,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 21:57:12,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 21:57:12,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558066111] [2020-11-06 21:57:12,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 21:57:12,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 21:57:12,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 21:57:12,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 21:57:12,087 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 4 states. [2020-11-06 21:57:12,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 21:57:12,236 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-11-06 21:57:12,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 21:57:12,238 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-11-06 21:57:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 21:57:12,246 INFO L225 Difference]: With dead ends: 59 [2020-11-06 21:57:12,246 INFO L226 Difference]: Without dead ends: 28 [2020-11-06 21:57:12,250 INFO L677 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 [2020-11-06 21:57:12,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-06 21:57:12,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-11-06 21:57:12,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-06 21:57:12,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2020-11-06 21:57:12,293 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 24 [2020-11-06 21:57:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 21:57:12,294 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2020-11-06 21:57:12,294 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 21:57:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2020-11-06 21:57:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-06 21:57:12,295 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:57:12,295 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:57:12,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:57:12,296 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:57:12,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:57:12,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1939701542, now seen corresponding path program 1 times [2020-11-06 21:57:12,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:57:12,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33423144] [2020-11-06 21:57:12,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:57:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:12,408 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:57:12,541 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:57:12,607 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:57:12,607 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:57:12,609 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 21:57:12,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:57:12 BoogieIcfgContainer [2020-11-06 21:57:12,668 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:57:12,673 INFO L168 Benchmark]: Toolchain (without parser) took 2064.59 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 95.5 MB in the end (delta: 38.8 MB). Peak memory consumption was 40.3 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,677 INFO L168 Benchmark]: CDTParser took 1.50 ms. Allocated memory is still 158.3 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:57:12,679 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.14 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,681 INFO L168 Benchmark]: Boogie Preprocessor took 53.46 ms. Allocated memory is still 158.3 MB. Free memory was 123.5 MB in the beginning and 121.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,682 INFO L168 Benchmark]: RCFGBuilder took 681.43 ms. Allocated memory is still 158.3 MB. Free memory was 121.6 MB in the beginning and 101.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,683 INFO L168 Benchmark]: TraceAbstraction took 1041.22 ms. Allocated memory is still 158.3 MB. Free memory was 100.8 MB in the beginning and 95.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. [2020-11-06 21:57:12,695 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50 ms. Allocated memory is still 158.3 MB. Free memory is still 131.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.14 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 53.46 ms. Allocated memory is still 158.3 MB. Free memory was 123.5 MB in the beginning and 121.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 681.43 ms. Allocated memory is still 158.3 MB. Free memory was 121.6 MB in the beginning and 101.3 MB in the end (delta: 20.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1041.22 ms. Allocated memory is still 158.3 MB. Free memory was 100.8 MB in the beginning and 95.5 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 70, overapproximation of bitwiseAnd at line 40. Possible FailurePath: [L70] double x = 1.0 / 0.0; [L71] CALL, EXPR fabs_double(x) VAL [\old(x)=8589934607] [L47] __uint32_t high; VAL [\old(x)=8589934607, x=8589934607] [L49] ieee_double_shape_type gh_u; [L50] gh_u.value = (x) [L51] EXPR gh_u.parts.msw [L51] (high) = gh_u.parts.msw [L54] ieee_double_shape_type sh_u; [L55] sh_u.value = (x) [L56] sh_u.parts.msw = (high & 0x7fffffff) [L57] EXPR sh_u.value [L57] (x) = sh_u.value [L59] return x; VAL [\old(x)=8589934607, \result=8589934607, high=16, x=8589934607] [L71] RET, EXPR fabs_double(x) VAL [fabs_double(x)=8589934607, x=8589934607] [L71] double res = fabs_double(x); [L74] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934607] [L33] __int32_t hx, lx; VAL [\old(x)=8589934607, x=8589934607] [L35] ieee_double_shape_type ew_u; [L36] ew_u.value = (x) [L37] EXPR ew_u.parts.msw [L37] (hx) = ew_u.parts.msw [L38] EXPR ew_u.parts.lsw [L38] (lx) = ew_u.parts.lsw [L40] hx &= 0x7fffffff [L41] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L42] hx = 0x7ff00000 - hx [L43] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934607, \result=0, hx=2146435072, lx=-2, x=8589934607] [L74] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934607, x=8589934607] [L74] COND TRUE !isinf_double(res) [L75] CALL reach_error() [L3] __assert_fail("0", "double_req_bl_1012a.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 8 SDslu, 21 SDs, 0 SdLazy, 26 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred 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, 0.1s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 1771 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...