/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:20:47,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:20:47,434 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:20:47,460 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:20:47,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:20:47,462 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:20:47,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:20:47,466 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:20:47,468 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:20:47,469 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:20:47,471 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:20:47,472 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:20:47,472 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:20:47,474 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:20:47,475 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:20:47,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:20:47,477 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:20:47,478 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:20:47,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:20:47,482 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:20:47,484 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:20:47,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:20:47,487 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:20:47,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:20:47,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:20:47,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:20:47,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:20:47,492 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:20:47,492 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:20:47,494 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:20:47,494 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:20:47,495 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:20:47,496 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:20:47,497 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:20:47,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:20:47,498 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:20:47,499 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:20:47,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:20:47,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:20:47,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:20:47,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:20:47,503 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 [2020-09-25 13:20:47,530 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:20:47,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:20:47,532 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:20:47,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:20:47,532 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:20:47,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:20:47,533 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:20:47,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:20:47,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:20:47,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:20:47,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:20:47,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:20:47,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:20:47,534 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:20:47,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:20:47,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:20:47,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:20:47,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:20:47,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:20:47,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:20:47,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:20:47,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:20:47,536 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:20:47,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:20:47,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:20:47,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:20:47,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:20:47,537 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:20:47,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:20:47,538 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:20:48,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:20:48,113 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:20:48,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:20:48,121 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:20:48,121 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:20:48,122 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-09-25 13:20:48,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dabab877/e03c09468e6a4c8a8f8fd1a2a4515259/FLAGcfc548e76 [2020-09-25 13:20:48,766 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:20:48,767 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-09-25 13:20:48,777 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dabab877/e03c09468e6a4c8a8f8fd1a2a4515259/FLAGcfc548e76 [2020-09-25 13:20:49,100 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4dabab877/e03c09468e6a4c8a8f8fd1a2a4515259 [2020-09-25 13:20:49,116 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:20:49,123 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:20:49,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:49,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:20:49,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:20:49,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,140 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f97e2d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49, skipping insertion in model container [2020-09-25 13:20:49,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:20:49,179 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:20:49,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:49,411 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:20:49,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:20:49,466 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:20:49,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49 WrapperNode [2020-09-25 13:20:49,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:20:49,468 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:20:49,468 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:20:49,468 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:20:49,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,559 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (1/1) ... [2020-09-25 13:20:49,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:20:49,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:20:49,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:20:49,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:20:49,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (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 [2020-09-25 13:20:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:20:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:20:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-09-25 13:20:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-25 13:20:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:20:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:20:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-09-25 13:20:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 13:20:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 13:20:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 13:20:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 13:20:49,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 13:20:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 13:20:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-25 13:20:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:20:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:20:49,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:20:50,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:20:50,172 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 13:20:50,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:50 BoogieIcfgContainer [2020-09-25 13:20:50,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:20:50,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:20:50,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:20:50,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:20:50,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:20:49" (1/3) ... [2020-09-25 13:20:50,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b94985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:50, skipping insertion in model container [2020-09-25 13:20:50,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:20:49" (2/3) ... [2020-09-25 13:20:50,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b94985 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:20:50, skipping insertion in model container [2020-09-25 13:20:50,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:20:50" (3/3) ... [2020-09-25 13:20:50,188 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2020-09-25 13:20:50,198 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:20:50,208 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:20:50,230 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:20:50,257 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:20:50,258 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:20:50,258 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:20:50,258 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:20:50,258 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:20:50,258 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:20:50,258 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:20:50,258 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:20:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 13:20:50,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-25 13:20:50,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:50,292 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] [2020-09-25 13:20:50,293 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:50,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:50,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1851120069, now seen corresponding path program 1 times [2020-09-25 13:20:50,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:50,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604175325] [2020-09-25 13:20:50,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:50,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:50,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:50,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 13:20:50,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:20:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-25 13:20:50,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:50,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 13:20:50,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:50,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:20:50,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:20:50,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:50,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:20:50,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:20:50,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:50,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:50,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:50,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:50,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:20:50,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:20:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:50,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:20:50,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:20:50,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 13:20:50,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:50,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:50,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:20:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 13:20:50,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-25 13:20:50,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:20:50,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:20:50,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:20:50,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 13:20:50,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:20:50,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:20:50,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:20:50,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:20:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:20:50,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 13:20:50,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:20:50,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:20:50,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:20:50,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604175325] [2020-09-25 13:20:50,940 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:20:50,940 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:20:50,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567046075] [2020-09-25 13:20:50,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:20:50,950 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:20:50,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:20:50,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:20:50,973 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-09-25 13:20:51,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:20:51,219 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2020-09-25 13:20:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 13:20:51,222 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-09-25 13:20:51,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:20:51,234 INFO L225 Difference]: With dead ends: 118 [2020-09-25 13:20:51,235 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 13:20:51,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:20:51,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 13:20:51,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 13:20:51,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 13:20:51,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2020-09-25 13:20:51,301 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 30 [2020-09-25 13:20:51,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:20:51,301 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2020-09-25 13:20:51,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:20:51,302 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2020-09-25 13:20:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-09-25 13:20:51,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:20:51,304 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:20:51,305 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:20:51,305 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:20:51,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:20:51,306 INFO L82 PathProgramCache]: Analyzing trace with hash 1434482942, now seen corresponding path program 1 times [2020-09-25 13:20:51,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:20:51,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117751916] [2020-09-25 13:20:51,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:20:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 13:20:51,409 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 13:20:51,409 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 13:20:51,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:20:51,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:20:51 BoogieIcfgContainer [2020-09-25 13:20:51,462 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 13:20:51,472 INFO L168 Benchmark]: Toolchain (without parser) took 2352.22 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.5 MB in the beginning and 97.5 MB in the end (delta: 5.0 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:51,474 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 13:20:51,475 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.69 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:51,480 INFO L168 Benchmark]: Boogie Preprocessor took 131.30 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 91.6 MB in the beginning and 178.6 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:51,483 INFO L168 Benchmark]: RCFGBuilder took 579.42 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 158.4 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:51,484 INFO L168 Benchmark]: TraceAbstraction took 1282.11 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 97.5 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. [2020-09-25 13:20:51,493 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.69 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 91.6 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.30 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 91.6 MB in the beginning and 178.6 MB in the end (delta: -87.0 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 579.42 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 158.4 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1282.11 ms. Allocated memory is still 201.3 MB. Free memory was 158.4 MB in the beginning and 97.5 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = 1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) [L12] __uint32_t ix; [L14] ieee_float_shape_type gf_u; [L15] gf_u.value = (x) [L16] EXPR gf_u.word [L16] (ix) = gf_u.word [L19] ieee_float_shape_type sf_u; [L20] sf_u.word = (ix & 0x7fffffff) [L21] EXPR sf_u.value [L21] (x) = sf_u.value [L23] return x; [L47] RET, EXPR fabs_float(x) [L47] float res = fabs_float(x); [L50] CALL, EXPR isinf_float(res) [L28] __int32_t ix; [L30] ieee_float_shape_type gf_u; [L31] gf_u.value = (x) [L32] EXPR gf_u.word [L32] (ix) = gf_u.word [L34] ix &= 0x7fffffff [L35] return ((ix) == 0x7f800000L); [L50] RET, EXPR isinf_float(res) [L50] COND TRUE !isinf_float(res) [L51] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 11 SDslu, 40 SDs, 0 SdLazy, 70 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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, 0.4s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1798 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...