/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-benchs/addsub_float_exact.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 21:56:19,244 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 21:56:19,247 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 21:56:19,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 21:56:19,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 21:56:19,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 21:56:19,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 21:56:19,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 21:56:19,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 21:56:19,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 21:56:19,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 21:56:19,302 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 21:56:19,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 21:56:19,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 21:56:19,306 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 21:56:19,307 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 21:56:19,308 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 21:56:19,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 21:56:19,312 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 21:56:19,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 21:56:19,316 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 21:56:19,318 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 21:56:19,320 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 21:56:19,321 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 21:56:19,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 21:56:19,326 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 21:56:19,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 21:56:19,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 21:56:19,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 21:56:19,330 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 21:56:19,330 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 21:56:19,331 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 21:56:19,332 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 21:56:19,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 21:56:19,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 21:56:19,335 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 21:56:19,336 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 21:56:19,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 21:56:19,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 21:56:19,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 21:56:19,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 21:56:19,340 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 21:56:19,373 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 21:56:19,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 21:56:19,375 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 21:56:19,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 21:56:19,376 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 21:56:19,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 21:56:19,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 21:56:19,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 21:56:19,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 21:56:19,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 21:56:19,379 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 21:56:19,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 21:56:19,380 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 21:56:19,380 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 21:56:19,381 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 21:56:19,381 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 21:56:19,381 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 21:56:19,382 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 21:56:19,382 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 21:56:19,382 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 21:56:19,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 21:56:19,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 21:56:19,383 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 21:56:19,383 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 21:56:19,384 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 21:56:19,384 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 21:56:19,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 21:56:19,384 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 21:56:19,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 21:56:19,385 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 21:56:19,886 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 21:56:19,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 21:56:19,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 21:56:19,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 21:56:19,919 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 21:56:19,921 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/addsub_float_exact.c [2020-11-06 21:56:20,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95465688/ef2d05afd8d1417abab9861e82e8f995/FLAGb271efcf1 [2020-11-06 21:56:20,669 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 21:56:20,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/addsub_float_exact.c [2020-11-06 21:56:20,678 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95465688/ef2d05afd8d1417abab9861e82e8f995/FLAGb271efcf1 [2020-11-06 21:56:21,057 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a95465688/ef2d05afd8d1417abab9861e82e8f995 [2020-11-06 21:56:21,060 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 21:56:21,068 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 21:56:21,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 21:56:21,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 21:56:21,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 21:56:21,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70ba116a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21, skipping insertion in model container [2020-11-06 21:56:21,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 21:56:21,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 21:56:21,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:56:21,291 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 21:56:21,307 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 21:56:21,323 INFO L208 MainTranslator]: Completed translation [2020-11-06 21:56:21,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21 WrapperNode [2020-11-06 21:56:21,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 21:56:21,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 21:56:21,325 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 21:56:21,325 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 21:56:21,338 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,346 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,347 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,353 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,355 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,357 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (1/1) ... [2020-11-06 21:56:21,359 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 21:56:21,360 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 21:56:21,360 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 21:56:21,360 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 21:56:21,361 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (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 21:56:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 21:56:21,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 21:56:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 21:56:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 21:56:21,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 21:56:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 21:56:21,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 21:56:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 21:56:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 21:56:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 21:56:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 21:56:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 21:56:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 21:56:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 21:56:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 21:56:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 21:56:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 21:56:21,677 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 21:56:21,677 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 21:56:21,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:21 BoogieIcfgContainer [2020-11-06 21:56:21,680 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 21:56:21,689 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 21:56:21,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 21:56:21,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 21:56:21,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 09:56:21" (1/3) ... [2020-11-06 21:56:21,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb9f78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:21, skipping insertion in model container [2020-11-06 21:56:21,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 09:56:21" (2/3) ... [2020-11-06 21:56:21,703 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cb9f78a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 09:56:21, skipping insertion in model container [2020-11-06 21:56:21,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 09:56:21" (3/3) ... [2020-11-06 21:56:21,710 INFO L111 eAbstractionObserver]: Analyzing ICFG addsub_float_exact.c [2020-11-06 21:56:21,745 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 21:56:21,757 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 21:56:21,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 21:56:21,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 21:56:21,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 21:56:21,814 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 21:56:21,815 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 21:56:21,815 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 21:56:21,815 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 21:56:21,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 21:56:21,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 21:56:21,832 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-11-06 21:56:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-06 21:56:21,838 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 21:56:21,839 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 21:56:21,839 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 21:56:21,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 21:56:21,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1930644943, now seen corresponding path program 1 times [2020-11-06 21:56:21,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 21:56:21,854 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931814058] [2020-11-06 21:56:21,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 21:56:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:56:21,993 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:56:22,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 21:56:22,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 21:56:22,059 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 21:56:22,060 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 21:56:22,061 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 21:56:22,090 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 09:56:22 BoogieIcfgContainer [2020-11-06 21:56:22,090 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 21:56:22,093 INFO L168 Benchmark]: Toolchain (without parser) took 1028.90 ms. Allocated memory is still 156.2 MB. Free memory was 131.6 MB in the beginning and 120.0 MB in the end (delta: 11.6 MB). Peak memory consumption was 12.1 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:22,094 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 97.3 MB in the beginning and 97.2 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 21:56:22,095 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.76 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:22,096 INFO L168 Benchmark]: Boogie Preprocessor took 34.00 ms. Allocated memory is still 156.2 MB. Free memory was 121.8 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:22,098 INFO L168 Benchmark]: RCFGBuilder took 320.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.4 MB in the beginning and 133.0 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:22,099 INFO L168 Benchmark]: TraceAbstraction took 401.21 ms. Allocated memory is still 156.2 MB. Free memory was 132.5 MB in the beginning and 120.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-06 21:56:22,103 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory was 97.3 MB in the beginning and 97.2 MB in the end (delta: 125.9 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.76 ms. Allocated memory is still 156.2 MB. Free memory was 131.0 MB in the beginning and 121.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.00 ms. Allocated memory is still 156.2 MB. Free memory was 121.8 MB in the beginning and 120.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 320.46 ms. Allocated memory is still 156.2 MB. Free memory was 120.4 MB in the beginning and 133.0 MB in the end (delta: -12.6 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 401.21 ms. Allocated memory is still 156.2 MB. Free memory was 132.5 MB in the beginning and 120.0 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.6 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 someBinaryFLOATComparisonOperation at line 16, overapproximation of someBinaryArithmeticFLOAToperation at line 13. Possible FailurePath: [L10] float x, y, z, r; [L12] x = 1e7f [L13] y = x + 1.f [L14] z = x - 1.f [L15] r = y - z VAL [x=10000000] [L16] CALL __VERIFIER_assert(r == 2.f) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L6] CALL reach_error() [L3] __assert_fail("0", "addsub_float_exact.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 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=22occurred 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, 11 NumberOfCodeBlocks, 11 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...