/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:07:52,090 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:07:52,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:07:52,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:07:52,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:07:52,140 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:07:52,145 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:07:52,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:07:52,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:07:52,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:07:52,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:07:52,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:07:52,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:07:52,170 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:07:52,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:07:52,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:07:52,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:07:52,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:07:52,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:07:52,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:07:52,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:07:52,196 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:07:52,197 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:07:52,201 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:07:52,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:07:52,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:07:52,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:07:52,215 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:07:52,216 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:07:52,217 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:07:52,217 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:07:52,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:07:52,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:07:52,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:07:52,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:07:52,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:07:52,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:07:52,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:07:52,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:07:52,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:07:52,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:07:52,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:07:52,320 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:07:52,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:07:52,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:07:52,327 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:07:52,327 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:07:52,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:07:52,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:07:52,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:07:52,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:07:52,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:07:52,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:07:52,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:07:52,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:07:52,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:07:52,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:07:52,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:07:52,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:07:52,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:07:52,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:07:52,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:07:52,331 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:07:52,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:07:52,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:07:52,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:07:52,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:07:52,332 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:07:52,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:07:52,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:07:52,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:07:52,867 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:07:52,868 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:07:52,869 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2020-12-23 06:07:52,947 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/62052f3f4/31c3435329fc4461bad987144dbd990a/FLAG6c40dacfd [2020-12-23 06:07:53,548 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:07:53,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c [2020-12-23 06:07:53,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/62052f3f4/31c3435329fc4461bad987144dbd990a/FLAG6c40dacfd [2020-12-23 06:07:53,921 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/62052f3f4/31c3435329fc4461bad987144dbd990a [2020-12-23 06:07:53,925 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:07:53,928 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:07:53,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:53,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:07:53,937 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:07:53,938 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:53" (1/1) ... [2020-12-23 06:07:53,941 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@358f2709 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:53, skipping insertion in model container [2020-12-23 06:07:53,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:07:53" (1/1) ... [2020-12-23 06:07:53,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:07:53,974 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2020-12-23 06:07:54,199 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2020-12-23 06:07:54,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:54,220 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__x~0,] left hand side expression in assignment: lhs: VariableLHS[~main__x1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2020-12-23 06:07:54,241 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/floats-esbmc-regression/Float_div.i.p+cfa-reducer.c[667,680] [2020-12-23 06:07:54,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:07:54,262 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:07:54,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54 WrapperNode [2020-12-23 06:07:54,263 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:07:54,265 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:54,265 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:07:54,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:07:54,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,284 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:07:54,308 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:07:54,308 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:07:54,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:07:54,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,329 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... [2020-12-23 06:07:54,341 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:07:54,342 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:07:54,342 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:07:54,342 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:07:54,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/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 [2020-12-23 06:07:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:07:54,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:07:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:07:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:07:54,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:07:54,727 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 06:07:54,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:54 BoogieIcfgContainer [2020-12-23 06:07:54,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:07:54,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:07:54,731 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:07:54,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:07:54,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:07:53" (1/3) ... [2020-12-23 06:07:54,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243e3337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:54, skipping insertion in model container [2020-12-23 06:07:54,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:07:54" (2/3) ... [2020-12-23 06:07:54,744 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@243e3337 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:07:54, skipping insertion in model container [2020-12-23 06:07:54,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:54" (3/3) ... [2020-12-23 06:07:54,748 INFO L111 eAbstractionObserver]: Analyzing ICFG Float_div.i.p+cfa-reducer.c [2020-12-23 06:07:54,756 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:07:54,762 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:07:54,786 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:07:54,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:07:54,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:07:54,833 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:07:54,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:07:54,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:07:54,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:07:54,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:07:54,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:07:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-12-23 06:07:54,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 06:07:54,859 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:07:54,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 06:07:54,860 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:07:54,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:07:54,868 INFO L82 PathProgramCache]: Analyzing trace with hash 28696774, now seen corresponding path program 1 times [2020-12-23 06:07:54,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:07:54,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552821548] [2020-12-23 06:07:54,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:07:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:07:55,014 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:07:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:07:55,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:07:55,063 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:07:55,064 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:07:55,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:07:55,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:07:55 BoogieIcfgContainer [2020-12-23 06:07:55,091 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:07:55,092 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:07:55,092 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:07:55,093 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:07:55,093 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:07:54" (3/4) ... [2020-12-23 06:07:55,097 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:07:55,097 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:07:55,100 INFO L168 Benchmark]: Toolchain (without parser) took 1170.38 ms. Allocated memory is still 168.8 MB. Free memory was 144.8 MB in the beginning and 108.8 MB in the end (delta: 36.0 MB). Peak memory consumption was 35.7 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:55,100 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 168.8 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:07:55,101 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.20 ms. Allocated memory is still 168.8 MB. Free memory was 144.5 MB in the beginning and 135.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:55,102 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 168.8 MB. Free memory was 135.0 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:55,103 INFO L168 Benchmark]: Boogie Preprocessor took 32.93 ms. Allocated memory is still 168.8 MB. Free memory was 133.6 MB in the beginning and 132.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:55,104 INFO L168 Benchmark]: RCFGBuilder took 386.78 ms. Allocated memory is still 168.8 MB. Free memory was 132.6 MB in the beginning and 121.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:55,105 INFO L168 Benchmark]: TraceAbstraction took 360.84 ms. Allocated memory is still 168.8 MB. Free memory was 121.1 MB in the beginning and 109.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:07:55,106 INFO L168 Benchmark]: Witness Printer took 4.96 ms. Allocated memory is still 168.8 MB. Free memory was 109.2 MB in the beginning and 108.8 MB in the end (delta: 470.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:07:55,111 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 168.8 MB. Free memory is still 143.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.20 ms. Allocated memory is still 168.8 MB. Free memory was 144.5 MB in the beginning and 135.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 41.85 ms. Allocated memory is still 168.8 MB. Free memory was 135.0 MB in the beginning and 133.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.93 ms. Allocated memory is still 168.8 MB. Free memory was 133.6 MB in the beginning and 132.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 386.78 ms. Allocated memory is still 168.8 MB. Free memory was 132.6 MB in the beginning and 121.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 360.84 ms. Allocated memory is still 168.8 MB. Free memory was 121.1 MB in the beginning and 109.2 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Witness Printer took 4.96 ms. Allocated memory is still 168.8 MB. Free memory was 109.2 MB in the beginning and 108.8 MB in the end (delta: 470.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 27]: 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 12, overapproximation of someBinaryArithmeticDOUBLEoperation at line 10. Possible FailurePath: [L1] int __return_main; VAL [__return_main=0] [L9] float main__x = 1.0; [L10] float main__x1 = main__x / 2.5; VAL [__return_main=0] [L12] COND FALSE !(main__x1 != main__x) [L21] int __tmp_1; [L22] __tmp_1 = main__x == 0 [L23] int __VERIFIER_assert__cond; [L24] __VERIFIER_assert__cond = __tmp_1 VAL [__return_main=0] [L25] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_main=0] [L27] reach_error() VAL [__return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=9occurred 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, 5 NumberOfCodeBlocks, 5 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...