/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 22:52:27,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 22:52:27,198 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 22:52:27,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 22:52:27,240 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 22:52:27,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 22:52:27,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 22:52:27,243 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 22:52:27,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 22:52:27,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 22:52:27,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 22:52:27,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 22:52:27,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 22:52:27,253 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 22:52:27,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 22:52:27,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 22:52:27,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 22:52:27,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 22:52:27,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 22:52:27,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 22:52:27,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 22:52:27,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 22:52:27,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 22:52:27,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 22:52:27,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 22:52:27,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 22:52:27,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 22:52:27,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 22:52:27,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 22:52:27,273 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 22:52:27,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 22:52:27,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 22:52:27,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 22:52:27,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 22:52:27,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 22:52:27,276 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 22:52:27,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 22:52:27,277 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 22:52:27,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 22:52:27,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 22:52:27,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 22:52:27,281 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-01-31 22:52:27,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 22:52:27,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 22:52:27,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 22:52:27,293 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 22:52:27,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 22:52:27,294 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 22:52:27,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 22:52:27,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 22:52:27,295 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 22:52:27,295 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 22:52:27,295 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:52:27,295 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 22:52:27,295 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-01-31 22:52:27,296 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-31 22:52:27,296 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-01-31 22:52:27,296 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 22:52:27,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 22:52:27,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 22:52:27,527 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 22:52:27,528 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 22:52:27,531 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 22:52:27,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-cbmc-regression/float2.c [2022-01-31 22:52:27,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7537f7902/a7487519a32a4ad69c7bdf372e273067/FLAGdf70047eb [2022-01-31 22:52:27,938 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 22:52:27,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c [2022-01-31 22:52:27,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7537f7902/a7487519a32a4ad69c7bdf372e273067/FLAGdf70047eb [2022-01-31 22:52:27,952 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7537f7902/a7487519a32a4ad69c7bdf372e273067 [2022-01-31 22:52:27,954 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 22:52:27,955 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-31 22:52:27,960 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 22:52:27,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 22:52:27,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 22:52:27,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:52:27" (1/1) ... [2022-01-31 22:52:27,964 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce69a2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:27, skipping insertion in model container [2022-01-31 22:52:27,964 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 10:52:27" (1/1) ... [2022-01-31 22:52:27,971 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 22:52:27,985 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 22:52:28,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2022-01-31 22:52:28,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2022-01-31 22:52:28,122 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2022-01-31 22:52:28,123 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2022-01-31 22:52:28,124 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:52:28,133 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 22:52:28,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[366,379] [2022-01-31 22:52:28,151 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[420,433] [2022-01-31 22:52:28,152 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[493,506] [2022-01-31 22:52:28,153 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/floats-cbmc-regression/float2.c[557,570] [2022-01-31 22:52:28,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 22:52:28,165 INFO L208 MainTranslator]: Completed translation [2022-01-31 22:52:28,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28 WrapperNode [2022-01-31 22:52:28,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 22:52:28,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 22:52:28,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 22:52:28,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 22:52:28,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,190 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 22:52:28,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 22:52:28,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 22:52:28,198 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 22:52:28,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (1/1) ... [2022-01-31 22:52:28,205 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 22:52:28,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 22:52:28,228 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-31 22:52:28,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-31 22:52:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 22:52:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 22:52:28,280 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 22:52:28,281 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 22:52:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 22:52:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 22:52:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 22:52:28,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 22:52:28,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 22:52:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 22:52:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 22:52:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 22:52:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 22:52:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 22:52:28,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 22:52:28,339 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 22:52:28,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 22:52:28,400 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 22:52:28,405 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 22:52:28,405 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-31 22:52:28,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:52:28 BoogieIcfgContainer [2022-01-31 22:52:28,407 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 22:52:28,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 22:52:28,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 22:52:28,411 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 22:52:28,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 10:52:27" (1/3) ... [2022-01-31 22:52:28,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e6ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:52:28, skipping insertion in model container [2022-01-31 22:52:28,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 10:52:28" (2/3) ... [2022-01-31 22:52:28,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f3e6ad3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 10:52:28, skipping insertion in model container [2022-01-31 22:52:28,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 10:52:28" (3/3) ... [2022-01-31 22:52:28,414 INFO L111 eAbstractionObserver]: Analyzing ICFG float2.c [2022-01-31 22:52:28,417 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-01-31 22:52:28,418 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-01-31 22:52:28,451 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 22:52:28,457 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=JORDAN [2022-01-31 22:52:28,457 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-31 22:52:28,467 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 16 states have (on average 1.5) internal successors, (24), 20 states have internal predecessors, (24), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-01-31 22:52:28,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-31 22:52:28,472 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 22:52:28,473 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 22:52:28,473 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 22:52:28,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 22:52:28,477 INFO L85 PathProgramCache]: Analyzing trace with hash -529380357, now seen corresponding path program 1 times [2022-01-31 22:52:28,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-01-31 22:52:28,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699653945] [2022-01-31 22:52:28,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 22:52:28,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 22:52:28,530 INFO L248 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-01-31 22:52:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:52:28,580 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 22:52:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 22:52:28,618 INFO L133 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2022-01-31 22:52:28,620 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 22:52:28,622 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-01-31 22:52:28,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2022-01-31 22:52:28,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr2ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2022-01-31 22:52:28,623 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr3ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2022-01-31 22:52:28,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 22:52:28,627 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-31 22:52:28,630 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 22:52:28,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 10:52:28 BoogieIcfgContainer [2022-01-31 22:52:28,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 22:52:28,639 INFO L158 Benchmark]: Toolchain (without parser) took 683.08ms. Allocated memory is still 195.0MB. Free memory was 140.0MB in the beginning and 141.6MB in the end (delta: -1.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:52:28,639 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 195.0MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 22:52:28,640 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.41ms. Allocated memory is still 195.0MB. Free memory was 139.9MB in the beginning and 166.3MB in the end (delta: -26.4MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. [2022-01-31 22:52:28,640 INFO L158 Benchmark]: Boogie Preprocessor took 29.13ms. Allocated memory is still 195.0MB. Free memory was 166.3MB in the beginning and 164.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 22:52:28,641 INFO L158 Benchmark]: RCFGBuilder took 209.82ms. Allocated memory is still 195.0MB. Free memory was 164.7MB in the beginning and 155.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 22:52:28,641 INFO L158 Benchmark]: TraceAbstraction took 229.44ms. Allocated memory is still 195.0MB. Free memory was 154.7MB in the beginning and 141.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 22:52:28,643 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 195.0MB. Free memory is still 156.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.41ms. Allocated memory is still 195.0MB. Free memory was 139.9MB in the beginning and 166.3MB in the end (delta: -26.4MB). Peak memory consumption was 9.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.13ms. Allocated memory is still 195.0MB. Free memory was 166.3MB in the beginning and 164.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 209.82ms. Allocated memory is still 195.0MB. Free memory was 164.7MB in the beginning and 155.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 229.44ms. Allocated memory is still 195.0MB. Free memory was 154.7MB in the beginning and 141.6MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 12]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 12. Possible FailurePath: [L7] float a; [L8] double b; [L11] a=1.25L [L12] COND TRUE !(a==1.25) [L12] reach_error() - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 23]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 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: No data available, 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 [2022-01-31 22:52:28,676 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...