/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 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=BIGGEST --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 -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_0920b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 15:31:20,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 15:31:20,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 15:31:20,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 15:31:20,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 15:31:20,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 15:31:20,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 15:31:20,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 15:31:20,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 15:31:20,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 15:31:20,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 15:31:20,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 15:31:20,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 15:31:20,192 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 15:31:20,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 15:31:20,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 15:31:20,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 15:31:20,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 15:31:20,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 15:31:20,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 15:31:20,210 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 15:31:20,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 15:31:20,212 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 15:31:20,212 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 15:31:20,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 15:31:20,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 15:31:20,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 15:31:20,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 15:31:20,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 15:31:20,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 15:31:20,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 15:31:20,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 15:31:20,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 15:31:20,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 15:31:20,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 15:31:20,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 15:31:20,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 15:31:20,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 15:31:20,242 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 15:31:20,243 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 15:31:20,244 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 15:31:20,245 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 [2020-10-12 15:31:20,278 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 15:31:20,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 15:31:20,281 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 15:31:20,281 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 15:31:20,281 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 15:31:20,281 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 15:31:20,281 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 15:31:20,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 15:31:20,282 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 15:31:20,282 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 15:31:20,283 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 15:31:20,283 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 15:31:20,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 15:31:20,284 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 15:31:20,284 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 15:31:20,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 15:31:20,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 15:31:20,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 15:31:20,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 15:31:20,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 15:31:20,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 15:31:20,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 15:31:20,286 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 15:31:20,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 15:31:20,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 15:31:20,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 15:31:20,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 15:31:20,287 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 15:31:20,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 15:31:20,287 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 -> 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 15:31:20,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 15:31:20,579 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 15:31:20,582 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 15:31:20,584 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 15:31:20,584 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 15:31:20,585 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_0920b.c [2020-10-12 15:31:20,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b81b754cd/e0d1a97671414cbda8e5aef2434a14bc/FLAGdd651305f [2020-10-12 15:31:21,122 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 15:31:21,122 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_0920b.c [2020-10-12 15:31:21,129 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b81b754cd/e0d1a97671414cbda8e5aef2434a14bc/FLAGdd651305f [2020-10-12 15:31:21,456 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b81b754cd/e0d1a97671414cbda8e5aef2434a14bc [2020-10-12 15:31:21,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 15:31:21,467 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 15:31:21,468 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:21,468 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 15:31:21,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 15:31:21,476 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,479 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3fc46334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21, skipping insertion in model container [2020-10-12 15:31:21,479 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,487 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 15:31:21,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 15:31:21,720 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:21,724 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 15:31:21,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 15:31:21,880 INFO L208 MainTranslator]: Completed translation [2020-10-12 15:31:21,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21 WrapperNode [2020-10-12 15:31:21,881 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 15:31:21,882 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 15:31:21,882 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 15:31:21,882 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 15:31:21,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,909 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,910 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (1/1) ... [2020-10-12 15:31:21,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 15:31:21,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 15:31:21,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 15:31:21,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 15:31:21,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (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 [2020-10-12 15:31:22,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 15:31:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 15:31:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-10-12 15:31:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_log [2020-10-12 15:31:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isfinite_double [2020-10-12 15:31:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-10-12 15:31:22,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-10-12 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-10-12 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-10-12 15:31:22,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 15:31:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 15:31:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_log [2020-10-12 15:31:22,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 15:31:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-10-12 15:31:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure isfinite_double [2020-10-12 15:31:22,010 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-10-12 15:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 15:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 15:31:22,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 15:31:22,483 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 15:31:22,483 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-10-12 15:31:22,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:22 BoogieIcfgContainer [2020-10-12 15:31:22,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 15:31:22,489 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 15:31:22,489 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 15:31:22,495 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 15:31:22,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 03:31:21" (1/3) ... [2020-10-12 15:31:22,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85bc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:22, skipping insertion in model container [2020-10-12 15:31:22,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 03:31:21" (2/3) ... [2020-10-12 15:31:22,496 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85bc8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 03:31:22, skipping insertion in model container [2020-10-12 15:31:22,497 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 03:31:22" (3/3) ... [2020-10-12 15:31:22,498 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_0920b.c [2020-10-12 15:31:22,509 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 15:31:22,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 15:31:22,530 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 15:31:22,552 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 15:31:22,552 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 15:31:22,552 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 15:31:22,553 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 15:31:22,553 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 15:31:22,553 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 15:31:22,553 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 15:31:22,553 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 15:31:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-12 15:31:22,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-12 15:31:22,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:22,580 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] [2020-10-12 15:31:22,580 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:22,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:22,587 INFO L82 PathProgramCache]: Analyzing trace with hash -463176706, now seen corresponding path program 1 times [2020-10-12 15:31:22,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:22,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412862768] [2020-10-12 15:31:22,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:22,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:22,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:22,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 15:31:22,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-12 15:31:22,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:22,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 15:31:22,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:22,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 15:31:23,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 15:31:23,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:23,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:23,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:23,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:23,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 15:31:23,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:23,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 15:31:23,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:23,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:23,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 15:31:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:23,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:23,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:23,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 15:31:23,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 15:31:23,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-12 15:31:23,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:23,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:23,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-12 15:31:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 15:31:23,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 15:31:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 15:31:23,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 15:31:23,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 15:31:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 15:31:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 15:31:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 15:31:23,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 15:31:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 15:31:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 15:31:23,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 15:31:23,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412862768] [2020-10-12 15:31:23,130 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 15:31:23,130 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 15:31:23,131 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839513076] [2020-10-12 15:31:23,136 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 15:31:23,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 15:31:23,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 15:31:23,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 15:31:23,154 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-10-12 15:31:23,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 15:31:23,432 INFO L93 Difference]: Finished difference Result 76 states and 110 transitions. [2020-10-12 15:31:23,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 15:31:23,434 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-12 15:31:23,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 15:31:23,446 INFO L225 Difference]: With dead ends: 76 [2020-10-12 15:31:23,446 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 15:31:23,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 15:31:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 15:31:23,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-12 15:31:23,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 15:31:23,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2020-10-12 15:31:23,495 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 48 transitions. Word has length 22 [2020-10-12 15:31:23,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 15:31:23,495 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 48 transitions. [2020-10-12 15:31:23,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 15:31:23,496 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 48 transitions. [2020-10-12 15:31:23,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 15:31:23,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 15:31:23,497 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] [2020-10-12 15:31:23,498 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 15:31:23,498 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 15:31:23,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 15:31:23,499 INFO L82 PathProgramCache]: Analyzing trace with hash -1641583218, now seen corresponding path program 1 times [2020-10-12 15:31:23,499 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 15:31:23,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2126007409] [2020-10-12 15:31:23,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 15:31:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 15:31:23,540 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 15:31:23,540 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 15:31:23,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 15:31:23,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 03:31:23 BoogieIcfgContainer [2020-10-12 15:31:23,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 15:31:23,574 INFO L168 Benchmark]: Toolchain (without parser) took 2106.39 ms. Allocated memory was 147.8 MB in the beginning and 233.3 MB in the end (delta: 85.5 MB). Free memory was 103.2 MB in the beginning and 182.2 MB in the end (delta: -79.0 MB). Peak memory consumption was 6.5 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:23,575 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:31:23,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 413.14 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 181.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:23,578 INFO L168 Benchmark]: Boogie Preprocessor took 60.29 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 178.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:23,579 INFO L168 Benchmark]: RCFGBuilder took 545.31 ms. Allocated memory is still 204.5 MB. Free memory was 178.1 MB in the beginning and 150.4 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2020-10-12 15:31:23,581 INFO L168 Benchmark]: TraceAbstraction took 1082.52 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 149.7 MB in the beginning and 182.2 MB in the end (delta: -32.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 15:31:23,590 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 413.14 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 181.0 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.29 ms. Allocated memory is still 204.5 MB. Free memory was 181.0 MB in the beginning and 178.1 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 545.31 ms. Allocated memory is still 204.5 MB. Free memory was 178.1 MB in the beginning and 150.4 MB in the end (delta: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1082.52 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 149.7 MB in the beginning and 182.2 MB in the end (delta: -32.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 151]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 137, overapproximation of bitwiseOr at line 59, overapproximation of someBinaryArithmeticDOUBLEoperation at line 60. Possible FailurePath: [L32-L41] static const double ln2_hi_log = 6.93147180369123816490e-01, ln2_lo_log = 1.90821492927058770002e-10, two54_log = 1.80143985094819840000e+16, Lg1_log = 6.666666666666735130e-01, Lg2_log = 3.999999999940941908e-01, Lg3_log = 2.857142874366239149e-01, Lg4_log = 2.222219843214978396e-01, Lg5_log = 1.818357216161805012e-01, Lg6_log = 1.531383769920937332e-01, Lg7_log = 1.479819860511658591e-01; [L43] static const double zero = 0.0; [L146] double x = -1.0 / 0.0; [L147] CALL, EXPR __ieee754_log(x) [L46] double hfsq, f, s, z, R, w, t1, t2, dk; [L47] __int32_t k, hx, i, j; [L48] __uint32_t lx; [L51] ieee_double_shape_type ew_u; [L52] ew_u.value = (x) [L53] EXPR ew_u.parts.msw [L53] (hx) = ew_u.parts.msw [L54] EXPR ew_u.parts.lsw [L54] (lx) = ew_u.parts.lsw [L57] k = 0 [L58] COND TRUE hx < 0x00100000 [L59] COND TRUE ((hx & 0x7fffffff) | lx) == 0 [L60] return -two54_log / zero; [L147] RET, EXPR __ieee754_log(x) [L147] double res = __ieee754_log(x); [L150] CALL, EXPR isnan_double(res) [L137] return x != x; [L150] RET, EXPR isnan_double(res) [L150] COND TRUE !isnan_double(res) [L151] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 42 SDslu, 5 SDs, 0 SdLazy, 51 SolverSat, 10 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, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 45 NumberOfCodeBlocks, 45 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 1575 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...