/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/float-newlib/float_req_bl_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:08:48,491 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:08:48,496 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:08:48,557 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:08:48,558 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:08:48,566 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:08:48,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:08:48,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:08:48,577 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:08:48,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:08:48,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:08:48,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:08:48,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:08:48,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:08:48,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:08:48,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:08:48,598 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:08:48,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:08:48,611 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:08:48,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:08:48,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:08:48,623 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:08:48,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:08:48,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:08:48,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:08:48,634 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:08:48,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:08:48,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:08:48,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:08:48,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:08:48,639 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:08:48,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:08:48,642 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:08:48,643 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:08:48,644 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:08:48,645 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:08:48,646 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:08:48,646 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:08:48,646 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:08:48,647 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:08:48,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:08:48,649 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 [2020-10-29 09:08:48,739 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:08:48,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:08:48,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:08:48,744 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:08:48,744 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:08:48,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:08:48,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:08:48,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:08:48,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:08:48,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:08:48,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:08:48,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:08:48,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:08:48,746 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:08:48,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:08:48,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:08:48,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:08:48,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:08:48,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:08:48,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:08:48,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:08:48,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:08:48,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:08:48,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:08:48,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:08:48,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:08:48,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:08:48,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:08:48,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:08:48,750 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:08:49,179 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:08:49,208 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:08:49,211 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:08:49,212 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:08:49,213 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:08:49,214 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-10-29 09:08:49,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56995bc3b/21b3d8dc28ef4ec89a0b52fe442659d9/FLAG994ea01cd [2020-10-29 09:08:49,977 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:08:49,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1032d.c [2020-10-29 09:08:49,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56995bc3b/21b3d8dc28ef4ec89a0b52fe442659d9/FLAG994ea01cd [2020-10-29 09:08:50,307 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56995bc3b/21b3d8dc28ef4ec89a0b52fe442659d9 [2020-10-29 09:08:50,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:08:50,317 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:08:50,319 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:50,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:08:50,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:08:50,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,331 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d5106f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50, skipping insertion in model container [2020-10-29 09:08:50,332 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,341 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:08:50,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:08:50,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:50,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:08:50,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:08:50,596 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:08:50,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50 WrapperNode [2020-10-29 09:08:50,596 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:08:50,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:08:50,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:08:50,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:08:50,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,624 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,635 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (1/1) ... [2020-10-29 09:08:50,647 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:08:50,648 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:08:50,648 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:08:50,648 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:08:50,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (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 [2020-10-29 09:08:50,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:08:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:08:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:08:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure round_float [2020-10-29 09:08:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-10-29 09:08:50,738 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:08:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:08:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:08:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:08:50,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:08:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure round_float [2020-10-29 09:08:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-29 09:08:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:08:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:08:50,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:08:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-29 09:08:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-10-29 09:08:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:08:50,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:08:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:08:50,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:08:51,302 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:08:51,303 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-29 09:08:51,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:51 BoogieIcfgContainer [2020-10-29 09:08:51,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:08:51,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:08:51,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:08:51,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:08:51,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:08:50" (1/3) ... [2020-10-29 09:08:51,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a84362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:51, skipping insertion in model container [2020-10-29 09:08:51,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:08:50" (2/3) ... [2020-10-29 09:08:51,316 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18a84362 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:08:51, skipping insertion in model container [2020-10-29 09:08:51,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:08:51" (3/3) ... [2020-10-29 09:08:51,319 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1032d.c [2020-10-29 09:08:51,379 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:08:51,409 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:08:51,425 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:08:51,470 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:08:51,470 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:08:51,470 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:08:51,470 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:08:51,471 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:08:51,471 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:08:51,471 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:08:51,471 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:08:51,500 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-29 09:08:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:08:51,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:51,511 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] [2020-10-29 09:08:51,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:51,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:51,522 INFO L82 PathProgramCache]: Analyzing trace with hash 370196138, now seen corresponding path program 1 times [2020-10-29 09:08:51,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:51,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9554987] [2020-10-29 09:08:51,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:51,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:51,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:51,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:52,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:52,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:08:52,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:52,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-29 09:08:52,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:52,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-29 09:08:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:08:52,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:08:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:52,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:52,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:52,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:08:52,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:52,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:08:52,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:52,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:08:52,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:08:52,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:52,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:52,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:52,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:52,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-29 09:08:52,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:08:52,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:08:52,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:52,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:52,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:52,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:52,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-29 09:08:52,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:08:52,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:08:52,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:08:52,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:08:52,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:08:52,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 09:08:52,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:08:52,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:08:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:08:52,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-29 09:08:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:08:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:08:52,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:08:52,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9554987] [2020-10-29 09:08:52,327 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:08:52,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:08:52,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778052152] [2020-10-29 09:08:52,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:08:52,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:08:52,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:08:52,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:08:52,352 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 4 states. [2020-10-29 09:08:52,480 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-10-29 09:08:52,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:08:52,649 INFO L93 Difference]: Finished difference Result 71 states and 95 transitions. [2020-10-29 09:08:52,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:08:52,651 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-29 09:08:52,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:08:52,661 INFO L225 Difference]: With dead ends: 71 [2020-10-29 09:08:52,662 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 09:08:52,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:08:52,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 09:08:52,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-29 09:08:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 09:08:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-10-29 09:08:52,715 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 25 [2020-10-29 09:08:52,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:08:52,716 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-10-29 09:08:52,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:08:52,716 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-10-29 09:08:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 09:08:52,718 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:08:52,718 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] [2020-10-29 09:08:52,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:08:52,718 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:08:52,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:08:52,719 INFO L82 PathProgramCache]: Analyzing trace with hash -706779291, now seen corresponding path program 1 times [2020-10-29 09:08:52,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:08:52,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [435004973] [2020-10-29 09:08:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:08:52,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-29 09:08:52,769 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-29 09:08:52,770 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-29 09:08:52,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:08:52,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:08:52 BoogieIcfgContainer [2020-10-29 09:08:52,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:08:52,806 INFO L168 Benchmark]: Toolchain (without parser) took 2491.08 ms. Allocated memory is still 162.5 MB. Free memory was 138.5 MB in the beginning and 80.7 MB in the end (delta: 57.8 MB). Peak memory consumption was 57.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:52,807 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:08:52,808 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.09 ms. Allocated memory is still 162.5 MB. Free memory was 137.9 MB in the beginning and 127.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:52,810 INFO L168 Benchmark]: Boogie Preprocessor took 49.32 ms. Allocated memory is still 162.5 MB. Free memory was 127.6 MB in the beginning and 125.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:52,811 INFO L168 Benchmark]: RCFGBuilder took 657.55 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 107.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:52,812 INFO L168 Benchmark]: TraceAbstraction took 1492.58 ms. Allocated memory is still 162.5 MB. Free memory was 107.4 MB in the beginning and 80.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:08:52,824 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 162.5 MB. Free memory is still 137.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 278.09 ms. Allocated memory is still 162.5 MB. Free memory was 137.9 MB in the beginning and 127.6 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.32 ms. Allocated memory is still 162.5 MB. Free memory was 127.6 MB in the beginning and 125.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 657.55 ms. Allocated memory is still 162.5 MB. Free memory was 125.8 MB in the beginning and 107.8 MB in the end (delta: 18.0 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1492.58 ms. Allocated memory is still 162.5 MB. Free memory was 107.4 MB in the beginning and 80.7 MB in the end (delta: 26.8 MB). Peak memory consumption was 26.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L75] float x = -1.0f / 0.0f; [L76] CALL, EXPR round_float(x) [L14] __uint32_t w; [L16] int exponent_less_127; [L19] ieee_float_shape_type gf_u; [L20] gf_u.value = (x) [L21] EXPR gf_u.word [L21] (w) = gf_u.word [L24] exponent_less_127 = (int)((w & 0x7f800000) >> 23) - 127 [L26] COND FALSE !(exponent_less_127 < 23) [L42] COND TRUE exponent_less_127 == 128 [L44] return x + x; [L76] RET, EXPR round_float(x) [L76] float res = round_float(x); [L79] CALL, EXPR isinf_float(res) [L58] __int32_t ix; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); [L79] RET, EXPR isinf_float(res) [L79] COND TRUE !isinf_float(res) [L80] CALL reach_error() [L3] __assert_fail("0", "float_req_bl_1032d.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 39 SDtfs, 8 SDslu, 32 SDs, 0 SdLazy, 37 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 0.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1872 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...