/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 --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:04:55,235 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:04:55,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:04:55,275 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:04:55,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:04:55,277 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:04:55,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:04:55,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:04:55,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:04:55,286 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:04:55,287 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:04:55,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:04:55,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:04:55,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:04:55,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:04:55,294 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:04:55,295 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:04:55,296 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:04:55,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:04:55,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:04:55,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:04:55,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:04:55,307 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:04:55,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:04:55,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:04:55,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:04:55,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:04:55,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:04:55,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:04:55,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:04:55,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:04:55,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:04:55,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:04:55,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:04:55,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:04:55,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:04:55,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:04:55,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:04:55,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:04:55,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:04:55,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:04:55,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 01:04:55,428 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:04:55,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:04:55,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:04:55,434 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:04:55,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:04:55,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:04:55,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:04:55,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:04:55,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:04:55,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:04:55,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:04:55,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:04:55,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:04:55,438 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:04:55,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:04:55,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:04:55,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:04:55,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:04:55,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:04:55,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:04:55,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:04:55,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:04:55,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:04:55,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:04:55,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:04:55,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:04:55,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:04:55,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:04:55,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:04:55,442 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-2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:04:55,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:04:56,055 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:04:56,059 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:04:56,060 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:04:56,061 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:04:56,062 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/floats-esbmc-regression/Double_div.i [2020-10-27 01:04:56,151 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8784c8d08/59bd32541d2b42ddb7d9c80f6c8f468e/FLAGd2745b6dc [2020-10-27 01:04:56,911 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:04:56,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/floats-esbmc-regression/Double_div.i [2020-10-27 01:04:56,920 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8784c8d08/59bd32541d2b42ddb7d9c80f6c8f468e/FLAGd2745b6dc [2020-10-27 01:04:57,272 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8784c8d08/59bd32541d2b42ddb7d9c80f6c8f468e [2020-10-27 01:04:57,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:04:57,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:04:57,293 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:57,293 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:04:57,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:04:57,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f9954f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57, skipping insertion in model container [2020-10-27 01:04:57,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:04:57,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:04:57,562 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:57,577 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:04:57,599 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:04:57,623 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:04:57,624 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57 WrapperNode [2020-10-27 01:04:57,624 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:04:57,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:04:57,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:04:57,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:04:57,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,649 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,693 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... [2020-10-27 01:04:57,697 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:04:57,699 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:04:57,699 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:04:57,700 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:04:57,701 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-10-27 01:04:57,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:04:57,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:04:57,811 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:04:57,812 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:04:57,812 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:04:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:04:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:04:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 01:04:57,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 01:04:57,814 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:04:57,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:04:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:04:57,816 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:04:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:04:57,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:04:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:04:57,818 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:04:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:04:57,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:04:58,127 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:04:58,128 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:04:58,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:58 BoogieIcfgContainer [2020-10-27 01:04:58,130 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:04:58,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:04:58,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:04:58,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:04:58,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:04:57" (1/3) ... [2020-10-27 01:04:58,138 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719633e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:58, skipping insertion in model container [2020-10-27 01:04:58,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:04:57" (2/3) ... [2020-10-27 01:04:58,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@719633e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:04:58, skipping insertion in model container [2020-10-27 01:04:58,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:04:58" (3/3) ... [2020-10-27 01:04:58,141 INFO L111 eAbstractionObserver]: Analyzing ICFG Double_div.i [2020-10-27 01:04:58,155 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:04:58,160 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:04:58,177 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:04:58,207 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:04:58,207 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:04:58,207 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:04:58,207 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:04:58,208 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:04:58,208 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:04:58,208 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:04:58,208 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:04:58,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-27 01:04:58,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:04:58,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:04:58,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:04:58,236 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:04:58,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:04:58,252 INFO L82 PathProgramCache]: Analyzing trace with hash 454397783, now seen corresponding path program 1 times [2020-10-27 01:04:58,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:04:58,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989549220] [2020-10-27 01:04:58,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:04:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 01:04:58,492 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 01:04:58,495 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 01:04:58,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:04:58,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:04:58 BoogieIcfgContainer [2020-10-27 01:04:58,521 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:04:58,527 INFO L168 Benchmark]: Toolchain (without parser) took 1241.32 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 129.3 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:58,530 INFO L168 Benchmark]: CDTParser took 0.55 ms. Allocated memory is still 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:04:58,533 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.83 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 124.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:58,535 INFO L168 Benchmark]: Boogie Preprocessor took 69.40 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 122.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:58,536 INFO L168 Benchmark]: RCFGBuilder took 431.33 ms. Allocated memory is still 158.3 MB. Free memory was 122.4 MB in the beginning and 140.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:58,538 INFO L168 Benchmark]: TraceAbstraction took 390.19 ms. Allocated memory is still 158.3 MB. Free memory was 140.3 MB in the beginning and 129.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:04:58,545 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.55 ms. Allocated memory is still 158.3 MB. Free memory is still 131.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.83 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 124.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.40 ms. Allocated memory is still 158.3 MB. Free memory was 123.8 MB in the beginning and 122.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.33 ms. Allocated memory is still 158.3 MB. Free memory was 122.4 MB in the beginning and 140.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 390.19 ms. Allocated memory is still 158.3 MB. Free memory was 140.3 MB in the beginning and 129.3 MB in the end (delta: 11.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 21. Possible FailurePath: [L20] double x = 1.0; [L21] double x1 = x/2.5; [L23] COND FALSE !(x1 != x) [L29] CALL __VERIFIER_assert(x == 0) [L13] COND TRUE !(cond) [L13] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "Double_div.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 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=24occurred 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, 13 NumberOfCodeBlocks, 13 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...