/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/floats-cbmc-regression/float1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 17:53:56,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 17:53:56,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 17:53:56,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 17:53:56,537 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 17:53:56,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 17:53:56,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 17:53:56,543 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 17:53:56,546 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 17:53:56,547 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 17:53:56,548 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 17:53:56,550 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 17:53:56,551 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 17:53:56,552 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 17:53:56,553 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 17:53:56,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 17:53:56,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 17:53:56,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 17:53:56,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 17:53:56,588 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 17:53:56,590 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 17:53:56,592 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 17:53:56,593 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 17:53:56,595 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 17:53:56,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 17:53:56,599 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 17:53:56,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 17:53:56,601 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 17:53:56,601 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 17:53:56,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 17:53:56,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 17:53:56,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 17:53:56,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 17:53:56,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 17:53:56,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 17:53:56,608 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 17:53:56,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 17:53:56,610 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 17:53:56,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 17:53:56,612 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 17:53:56,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 17:53:56,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 17:53:56,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 17:53:56,645 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 17:53:56,647 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 17:53:56,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 17:53:56,647 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 17:53:56,648 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 17:53:56,648 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 17:53:56,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 17:53:56,649 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 17:53:56,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 17:53:56,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 17:53:56,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 17:53:56,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 17:53:56,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 17:53:56,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 17:53:56,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 17:53:56,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 17:53:56,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 17:53:56,651 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 17:53:56,652 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 17:53:56,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 17:53:56,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:53:56,653 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 17:53:56,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 17:53:56,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 17:53:56,654 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 17:53:56,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 17:53:56,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 17:53:56,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 17:53:56,655 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 17:53:57,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 17:53:57,056 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 17:53:57,060 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 17:53:57,061 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 17:53:57,062 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 17:53:57,063 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-10-23 17:53:57,155 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a751ecd/b165de888b324f2dbe0bc70fd8b8926f/FLAGe81590aa4 [2020-10-23 17:53:57,790 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 17:53:57,791 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float1.c [2020-10-23 17:53:57,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a751ecd/b165de888b324f2dbe0bc70fd8b8926f/FLAGe81590aa4 [2020-10-23 17:53:58,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/03a751ecd/b165de888b324f2dbe0bc70fd8b8926f [2020-10-23 17:53:58,183 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 17:53:58,191 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 17:53:58,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 17:53:58,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 17:53:58,200 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 17:53:58,201 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59124a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58, skipping insertion in model container [2020-10-23 17:53:58,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,215 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 17:53:58,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 17:53:58,414 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:53:58,430 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 17:53:58,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 17:53:58,458 INFO L208 MainTranslator]: Completed translation [2020-10-23 17:53:58,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58 WrapperNode [2020-10-23 17:53:58,458 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 17:53:58,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 17:53:58,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 17:53:58,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 17:53:58,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,481 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,481 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,488 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... [2020-10-23 17:53:58,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 17:53:58,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 17:53:58,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 17:53:58,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 17:53:58,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 17:53:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 17:53:58,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 17:53:58,577 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 17:53:58,577 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 17:53:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 17:53:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 17:53:58,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 17:53:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 17:53:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 17:53:58,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 17:53:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 17:53:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 17:53:58,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 17:53:58,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 17:53:58,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 17:53:59,049 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 17:53:59,050 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 17:53:59,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:53:59 BoogieIcfgContainer [2020-10-23 17:53:59,052 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 17:53:59,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 17:53:59,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 17:53:59,064 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 17:53:59,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 05:53:58" (1/3) ... [2020-10-23 17:53:59,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168bac49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:53:59, skipping insertion in model container [2020-10-23 17:53:59,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 05:53:58" (2/3) ... [2020-10-23 17:53:59,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@168bac49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 05:53:59, skipping insertion in model container [2020-10-23 17:53:59,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 05:53:59" (3/3) ... [2020-10-23 17:53:59,071 INFO L111 eAbstractionObserver]: Analyzing ICFG float1.c [2020-10-23 17:53:59,086 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 17:53:59,091 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 17:53:59,106 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 17:53:59,175 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 17:53:59,175 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 17:53:59,176 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 17:53:59,176 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 17:53:59,176 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 17:53:59,176 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 17:53:59,176 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 17:53:59,176 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 17:53:59,245 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-23 17:53:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-23 17:53:59,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 17:53:59,258 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 17:53:59,258 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 17:53:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 17:53:59,267 INFO L82 PathProgramCache]: Analyzing trace with hash -735984416, now seen corresponding path program 1 times [2020-10-23 17:53:59,278 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 17:53:59,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567472369] [2020-10-23 17:53:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 17:53:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:53:59,430 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:53:59,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 17:53:59,453 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 17:53:59,478 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 17:53:59,479 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 17:53:59,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 17:53:59,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 05:53:59 BoogieIcfgContainer [2020-10-23 17:53:59,508 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 17:53:59,511 INFO L168 Benchmark]: Toolchain (without parser) took 1324.41 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 125.4 MB in the end (delta: 1.1 MB). Peak memory consumption was 450.5 kB. Max. memory is 8.0 GB. [2020-10-23 17:53:59,512 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:53:59,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 17:53:59,514 INFO L168 Benchmark]: Boogie Preprocessor took 33.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 17:53:59,515 INFO L168 Benchmark]: RCFGBuilder took 557.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 104.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-23 17:53:59,516 INFO L168 Benchmark]: TraceAbstraction took 451.86 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 125.4 MB in the end (delta: -21.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 17:53:59,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 264.29 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.64 ms. Allocated memory is still 151.0 MB. Free memory was 116.9 MB in the beginning and 115.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 557.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 104.1 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 451.86 ms. Allocated memory is still 151.0 MB. Free memory was 103.6 MB in the beginning and 125.4 MB in the end (delta: -21.8 MB). There was no memory consumed. 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 to_int at line 10, overapproximation of someBinaryArithmeticDOUBLEoperation at line 9, overapproximation of to_real at line 8. Possible FailurePath: [L5] double x; [L6] int y; [L8] x=2 [L9] x-=0.6 [L10] y=x [L12] COND TRUE !(y==1) VAL [y=52] [L12] CALL reach_error() [L3] __assert_fail("0", "float1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...