/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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 SingleStatement --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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:44:30,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:44:30,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:44:30,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:44:30,555 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:44:30,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:44:30,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:44:30,570 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:44:30,572 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:44:30,576 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:44:30,577 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:44:30,578 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:44:30,578 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:44:30,581 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:44:30,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:44:30,585 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:44:30,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:44:30,588 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:44:30,590 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:44:30,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:44:30,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:44:30,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:44:30,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:44:30,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:44:30,623 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:44:30,623 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:44:30,623 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:44:30,625 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:44:30,628 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:44:30,629 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:44:30,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:44:30,630 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:44:30,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:44:30,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:44:30,637 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:44:30,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:44:30,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:44:30,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:44:30,639 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:44:30,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:44:30,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:44:30,642 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 [2020-09-24 23:44:30,678 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:44:30,678 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:44:30,680 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:44:30,680 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:44:30,680 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:44:30,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:44:30,680 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:44:30,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:44:30,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:44:30,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:44:30,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:44:30,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:44:30,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:44:30,682 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:44:30,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:44:30,682 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:44:30,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:44:30,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:44:30,683 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:44:30,683 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:44:30,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:44:30,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:44:30,684 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:44:30,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:44:30,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:44:30,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:44:30,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:44:30,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:44:30,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:44:30,685 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> SingleStatement 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; 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; 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; 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; 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; [2020-09-24 23:44:31,176 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:44:31,200 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:44:31,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:44:31,208 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:44:31,208 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:44:31,209 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c [2020-09-24 23:44:31,286 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4777658cc/f464fadbafca4cc48be8f5b7c6a20d62/FLAGbf6acdadd [2020-09-24 23:44:31,830 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:44:31,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1052c.c [2020-09-24 23:44:31,841 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4777658cc/f464fadbafca4cc48be8f5b7c6a20d62/FLAGbf6acdadd [2020-09-24 23:44:32,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4777658cc/f464fadbafca4cc48be8f5b7c6a20d62 [2020-09-24 23:44:32,191 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:44:32,197 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:44:32,198 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:32,198 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:44:32,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:44:32,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,209 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31051650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32, skipping insertion in model container [2020-09-24 23:44:32,209 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:44:32,253 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:44:32,493 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:32,499 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:44:32,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:44:32,563 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:44:32,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32 WrapperNode [2020-09-24 23:44:32,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:44:32,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:44:32,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:44:32,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:44:32,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,689 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,690 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,709 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,719 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (1/1) ... [2020-09-24 23:44:32,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:44:32,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:44:32,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:44:32,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:44:32,734 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (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 [2020-09-24 23:44:32,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:44:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:44:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_float [2020-09-24 23:44:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-09-24 23:44:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:44:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:44:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure floor_float [2020-09-24 23:44:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 23:44:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 23:44:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 23:44:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 23:44:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 23:44:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 23:44:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-09-24 23:44:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:44:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:44:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:44:33,293 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:44:33,294 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 23:44:33,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:33 BoogieIcfgContainer [2020-09-24 23:44:33,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:44:33,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:44:33,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:44:33,307 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:44:33,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:44:32" (1/3) ... [2020-09-24 23:44:33,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efde965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:33, skipping insertion in model container [2020-09-24 23:44:33,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:44:32" (2/3) ... [2020-09-24 23:44:33,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efde965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:44:33, skipping insertion in model container [2020-09-24 23:44:33,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:44:33" (3/3) ... [2020-09-24 23:44:33,312 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1052c.c [2020-09-24 23:44:33,322 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:44:33,333 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:44:33,357 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:44:33,391 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:44:33,391 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:44:33,391 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:44:33,391 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:44:33,392 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:44:33,392 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:44:33,392 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:44:33,392 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:44:33,419 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-24 23:44:33,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 23:44:33,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:33,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:44:33,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:33,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:33,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1112958377, now seen corresponding path program 1 times [2020-09-24 23:44:33,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:33,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157839265] [2020-09-24 23:44:33,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:33,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:33,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:33,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-24 23:44:33,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 23:44:33,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 23:44:33,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:33,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 23:44:33,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:44:33,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:33,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:33,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:44:33,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:33,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 23:44:33,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:44:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:33,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 23:44:33,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:44:33,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:44:34,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:44:34,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-09-24 23:44:34,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:44:34,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 23:44:34,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:44:34,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:44:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 23:44:34,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:44:34,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:44:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:44:34,038 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157839265] [2020-09-24 23:44:34,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:44:34,046 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 23:44:34,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157890516] [2020-09-24 23:44:34,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 23:44:34,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:44:34,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 23:44:34,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 23:44:34,077 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 4 states. [2020-09-24 23:44:34,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:44:34,380 INFO L93 Difference]: Finished difference Result 168 states and 201 transitions. [2020-09-24 23:44:34,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 23:44:34,383 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-24 23:44:34,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:44:34,398 INFO L225 Difference]: With dead ends: 168 [2020-09-24 23:44:34,398 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 23:44:34,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:44:34,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 23:44:34,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-09-24 23:44:34,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-24 23:44:34,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2020-09-24 23:44:34,466 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 31 [2020-09-24 23:44:34,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:44:34,466 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2020-09-24 23:44:34,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 23:44:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2020-09-24 23:44:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-24 23:44:34,469 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:44:34,470 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:44:34,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:44:34,470 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:44:34,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:44:34,471 INFO L82 PathProgramCache]: Analyzing trace with hash 788175425, now seen corresponding path program 1 times [2020-09-24 23:44:34,472 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:44:34,472 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268337346] [2020-09-24 23:44:34,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:44:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 23:44:34,533 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 23:44:34,534 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 23:44:34,540 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:44:34,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 11:44:34 BoogieIcfgContainer [2020-09-24 23:44:34,563 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 23:44:34,567 INFO L168 Benchmark]: Toolchain (without parser) took 2372.46 ms. Allocated memory was 147.8 MB in the beginning and 234.4 MB in the end (delta: 86.5 MB). Free memory was 103.4 MB in the beginning and 200.7 MB in the end (delta: -97.2 MB). Peak memory consumption was 75.0 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:34,568 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 23:44:34,569 INFO L168 Benchmark]: CACSL2BoogieTranslator took 366.55 ms. Allocated memory is still 147.8 MB. Free memory was 102.7 MB in the beginning and 91.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:34,570 INFO L168 Benchmark]: Boogie Preprocessor took 162.38 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 91.6 MB in the beginning and 182.2 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:34,571 INFO L168 Benchmark]: RCFGBuilder took 568.07 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 157.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:34,572 INFO L168 Benchmark]: TraceAbstraction took 1260.17 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 156.7 MB in the beginning and 200.7 MB in the end (delta: -44.0 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. [2020-09-24 23:44:34,577 INFO L336 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 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 366.55 ms. Allocated memory is still 147.8 MB. Free memory was 102.7 MB in the beginning and 91.6 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.38 ms. Allocated memory was 147.8 MB in the beginning and 205.0 MB in the end (delta: 57.1 MB). Free memory was 91.6 MB in the beginning and 182.2 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 568.07 ms. Allocated memory is still 205.0 MB. Free memory was 182.2 MB in the beginning and 157.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1260.17 ms. Allocated memory was 205.0 MB in the beginning and 234.4 MB in the end (delta: 29.4 MB). Free memory was 156.7 MB in the beginning and 200.7 MB in the end (delta: -44.0 MB). Peak memory consumption was 71.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 80]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 79, overapproximation of bitwiseAnd at line 21, overapproximation of someUnaryFLOAToperation at line 75, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L11] static const float huge_floor = 1.0e30; [L75] float x = -0.0f; [L76] CALL, EXPR floor_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L76] RET, EXPR floor_float(x) [L76] float res = floor_float(x); [L79] EXPR res == -0.0f && __signbit_float(res) == 1 [L79] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L80] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 92 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 97 SDtfs, 17 SDslu, 73 SDs, 0 SdLazy, 105 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1620 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...