/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=SMALLEST --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/double_req_bl_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:10:43,003 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:10:43,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:10:43,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:10:43,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:10:43,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:10:43,036 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:10:43,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:10:43,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:10:43,043 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:10:43,044 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:10:43,046 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:10:43,046 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:10:43,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:10:43,049 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:10:43,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:10:43,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:10:43,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:10:43,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:10:43,057 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:10:43,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:10:43,060 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:10:43,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:10:43,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:10:43,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:10:43,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:10:43,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:10:43,070 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:10:43,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:10:43,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:10:43,072 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:10:43,073 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:10:43,074 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:10:43,075 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:10:43,076 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:10:43,076 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:10:43,077 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:10:43,078 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:10:43,078 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:10:43,079 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:10:43,080 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:10:43,081 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:10:43,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:10:43,112 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:10:43,113 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:10:43,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:10:43,114 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:10:43,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:10:43,114 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:10:43,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:10:43,114 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:10:43,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:10:43,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:10:43,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:10:43,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:10:43,119 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:10:43,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:10:43,119 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:10:43,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:10:43,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:10:43,120 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:10:43,120 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:10:43,120 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:10:43,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:10:43,121 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:10:43,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:10:43,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:10:43,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:10:43,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:10:43,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:10:43,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:10:43,125 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:10:43,630 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:10:43,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:10:43,662 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:10:43,665 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:10:43,667 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:10:43,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032d.c [2020-09-24 18:10:43,752 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/483259b3e/9d59a2ad01b040f09fedac4029e46590/FLAG3134c3a35 [2020-09-24 18:10:44,284 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:10:44,285 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1032d.c [2020-09-24 18:10:44,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/483259b3e/9d59a2ad01b040f09fedac4029e46590/FLAG3134c3a35 [2020-09-24 18:10:44,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/483259b3e/9d59a2ad01b040f09fedac4029e46590 [2020-09-24 18:10:44,612 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:10:44,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:10:44,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:10:44,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:10:44,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:10:44,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:44" (1/1) ... [2020-09-24 18:10:44,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ff463a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:44, skipping insertion in model container [2020-09-24 18:10:44,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:10:44" (1/1) ... [2020-09-24 18:10:44,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:10:44,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:10:44,967 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:10:44,972 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:10:45,009 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:10:45,033 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:10:45,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45 WrapperNode [2020-09-24 18:10:45,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:10:45,035 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:10:45,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:10:45,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:10:45,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... [2020-09-24 18:10:45,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... [2020-09-24 18:10:45,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... [2020-09-24 18:10:45,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... [2020-09-24 18:10:45,177 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... [2020-09-24 18:10:45,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... [2020-09-24 18:10:45,187 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... [2020-09-24 18:10:45,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:10:45,191 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:10:45,191 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:10:45,191 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:10:45,193 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:10:45,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:10:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:10:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-09-24 18:10:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-24 18:10:45,268 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:10:45,268 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:10:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-09-24 18:10:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 18:10:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 18:10:45,269 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 18:10:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 18:10:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 18:10:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 18:10:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-24 18:10:45,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:10:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:10:45,271 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:10:45,821 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:10:45,822 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 18:10:45,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:45 BoogieIcfgContainer [2020-09-24 18:10:45,829 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:10:45,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:10:45,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:10:45,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:10:45,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:10:44" (1/3) ... [2020-09-24 18:10:45,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c877d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:45, skipping insertion in model container [2020-09-24 18:10:45,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:10:45" (2/3) ... [2020-09-24 18:10:45,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c877d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:10:45, skipping insertion in model container [2020-09-24 18:10:45,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:10:45" (3/3) ... [2020-09-24 18:10:45,839 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-09-24 18:10:45,851 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:10:45,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:10:45,887 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:10:45,921 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:10:45,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:10:45,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:10:45,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:10:45,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:10:45,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:10:45,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:10:45,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:10:45,949 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states. [2020-09-24 18:10:45,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-09-24 18:10:45,960 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:45,961 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] [2020-09-24 18:10:45,962 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:45,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:45,970 INFO L82 PathProgramCache]: Analyzing trace with hash 223530101, now seen corresponding path program 1 times [2020-09-24 18:10:45,981 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:45,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111329570] [2020-09-24 18:10:45,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:10:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:46,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:46,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:46,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:46,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-24 18:10:46,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:10:46,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 18:10:46,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 18:10:46,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:46,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 18:10:46,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:10:46,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:46,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:46,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:46,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:10:46,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 18:10:46,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:46,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:10:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:46,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-24 18:10:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:46,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:46,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:46,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 18:10:46,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:10:46,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 18:10:46,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:46,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:10:46,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:46,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:10:46,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-24 18:10:46,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:10:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:10:46,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:10:46,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 18:10:46,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:10:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 18:10:46,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:10:46,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:10:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 18:10:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:10:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:10:46,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:10:46,697 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111329570] [2020-09-24 18:10:46,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:10:46,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 18:10:46,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946717416] [2020-09-24 18:10:46,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 18:10:46,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:10:46,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 18:10:46,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 18:10:46,731 INFO L87 Difference]: Start difference. First operand 108 states. Second operand 4 states. [2020-09-24 18:10:47,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:10:47,135 INFO L93 Difference]: Finished difference Result 202 states and 231 transitions. [2020-09-24 18:10:47,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 18:10:47,137 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-09-24 18:10:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:10:47,152 INFO L225 Difference]: With dead ends: 202 [2020-09-24 18:10:47,152 INFO L226 Difference]: Without dead ends: 101 [2020-09-24 18:10:47,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:10:47,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-24 18:10:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2020-09-24 18:10:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-09-24 18:10:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 108 transitions. [2020-09-24 18:10:47,217 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 108 transitions. Word has length 38 [2020-09-24 18:10:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:10:47,217 INFO L479 AbstractCegarLoop]: Abstraction has 101 states and 108 transitions. [2020-09-24 18:10:47,217 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 18:10:47,217 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 108 transitions. [2020-09-24 18:10:47,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-24 18:10:47,220 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:10:47,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:10:47,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:10:47,221 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:10:47,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:10:47,222 INFO L82 PathProgramCache]: Analyzing trace with hash 32877217, now seen corresponding path program 1 times [2020-09-24 18:10:47,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:10:47,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1537777627] [2020-09-24 18:10:47,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:10:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:10:47,305 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:10:47,305 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:10:47,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:10:47,355 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:10:47 BoogieIcfgContainer [2020-09-24 18:10:47,355 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:10:47,368 INFO L168 Benchmark]: Toolchain (without parser) took 2751.83 ms. Allocated memory was 146.8 MB in the beginning and 235.9 MB in the end (delta: 89.1 MB). Free memory was 102.4 MB in the beginning and 188.1 MB in the end (delta: -85.7 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:47,370 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 18:10:47,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.18 ms. Allocated memory is still 146.8 MB. Free memory was 101.8 MB in the beginning and 90.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:47,373 INFO L168 Benchmark]: Boogie Preprocessor took 155.56 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 90.2 MB in the beginning and 179.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:47,374 INFO L168 Benchmark]: RCFGBuilder took 638.17 ms. Allocated memory is still 202.9 MB. Free memory was 179.9 MB in the beginning and 152.4 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-09-24 18:10:47,375 INFO L168 Benchmark]: TraceAbstraction took 1533.07 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 151.7 MB in the beginning and 188.1 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:10:47,386 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 146.8 MB. Free memory was 121.5 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 416.18 ms. Allocated memory is still 146.8 MB. Free memory was 101.8 MB in the beginning and 90.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 155.56 ms. Allocated memory was 146.8 MB in the beginning and 202.9 MB in the end (delta: 56.1 MB). Free memory was 90.2 MB in the beginning and 179.9 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 638.17 ms. Allocated memory is still 202.9 MB. Free memory was 179.9 MB in the beginning and 152.4 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1533.07 ms. Allocated memory was 202.9 MB in the beginning and 235.9 MB in the end (delta: 33.0 MB). Free memory was 151.7 MB in the beginning and 188.1 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 40, overapproximation of bitwiseAnd at line 72. Possible FailurePath: [L86] double x = -1.0 / 0.0; [L87] CALL, EXPR round_double(x) [L15] __int32_t msw, exponent_less_1023; [L16] __uint32_t lsw; [L18] ieee_double_shape_type ew_u; [L19] ew_u.value = (x) [L20] EXPR ew_u.parts.msw [L20] (msw) = ew_u.parts.msw [L21] EXPR ew_u.parts.lsw [L21] (lsw) = ew_u.parts.lsw [L23] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L24] COND FALSE !(exponent_less_1023 < 20) [L38] COND TRUE exponent_less_1023 > 51 [L39] COND TRUE exponent_less_1023 == 1024 [L40] return x + x; [L87] RET, EXPR round_double(x) [L87] double res = round_double(x); [L90] CALL, EXPR isinf_double(res) [L65] __int32_t hx, lx; [L67] ieee_double_shape_type ew_u; [L68] ew_u.value = (x) [L69] EXPR ew_u.parts.msw [L69] (hx) = ew_u.parts.msw [L70] EXPR ew_u.parts.lsw [L70] (lx) = ew_u.parts.lsw [L72] hx &= 0x7fffffff [L73] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L74] hx = 0x7ff00000 - hx [L75] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L90] RET, EXPR isinf_double(res) [L90] COND TRUE !isinf_double(res) [L91] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 17 SDslu, 82 SDs, 0 SdLazy, 124 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred 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, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 37 ConstructedInterpolants, 0 QuantifiedInterpolants, 2590 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...