/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=0.3 --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_1072c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:12:49,957 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:12:49,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:12:49,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:12:49,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:12:49,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:12:49,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:12:49,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:12:49,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:12:49,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:12:49,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:12:49,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:12:49,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:12:49,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:12:49,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:12:50,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:12:50,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:12:50,006 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:12:50,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:12:50,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:12:50,014 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:12:50,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:12:50,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:12:50,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:12:50,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:12:50,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:12:50,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:12:50,022 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:12:50,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:12:50,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:12:50,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:12:50,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:12:50,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:12:50,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:12:50,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:12:50,027 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:12:50,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:12:50,028 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:12:50,028 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:12:50,029 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:12:50,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:12:50,031 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 12:12:50,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:12:50,058 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:12:50,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:12:50,060 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:12:50,060 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:12:50,060 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:12:50,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:12:50,061 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:12:50,061 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:12:50,061 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:12:50,061 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:12:50,061 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:12:50,062 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:12:50,062 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:12:50,062 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:12:50,062 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:12:50,062 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:12:50,063 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:12:50,063 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:12:50,063 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:12:50,063 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:12:50,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:12:50,064 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:12:50,064 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:12:50,064 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:12:50,064 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:12:50,064 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:12:50,065 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:12:50,065 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:12:50,065 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:12:50,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:12:50,641 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:12:50,646 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:12:50,648 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:12:50,648 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:12:50,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-09-25 12:12:50,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c9ff4957/380ed0f2819c4bc6971f4277d9215d8f/FLAGf84635a76 [2020-09-25 12:12:51,285 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:12:51,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1072c.c [2020-09-25 12:12:51,296 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c9ff4957/380ed0f2819c4bc6971f4277d9215d8f/FLAGf84635a76 [2020-09-25 12:12:51,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5c9ff4957/380ed0f2819c4bc6971f4277d9215d8f [2020-09-25 12:12:51,649 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:12:51,655 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:12:51,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:12:51,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:12:51,665 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:12:51,666 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:12:51" (1/1) ... [2020-09-25 12:12:51,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f43d38d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:51, skipping insertion in model container [2020-09-25 12:12:51,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:12:51" (1/1) ... [2020-09-25 12:12:51,682 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:12:51,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:12:52,014 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:12:52,020 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:12:52,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:12:52,168 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:12:52,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52 WrapperNode [2020-09-25 12:12:52,169 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:12:52,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:12:52,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:12:52,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:12:52,184 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (1/1) ... [2020-09-25 12:12:52,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (1/1) ... [2020-09-25 12:12:52,196 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (1/1) ... [2020-09-25 12:12:52,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (1/1) ... [2020-09-25 12:12:52,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (1/1) ... [2020-09-25 12:12:52,220 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (1/1) ... [2020-09-25 12:12:52,222 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (1/1) ... [2020-09-25 12:12:52,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:12:52,227 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:12:52,229 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:12:52,229 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:12:52,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (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 12:12:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:12:52,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:12:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-25 12:12:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-09-25 12:12:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-25 12:12:52,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:12:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:12:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-25 12:12:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-09-25 12:12:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:12:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-25 12:12:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:12:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:12:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:12:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-25 12:12:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-25 12:12:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:12:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:12:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:12:52,796 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:12:52,797 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-25 12:12:52,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:12:52 BoogieIcfgContainer [2020-09-25 12:12:52,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:12:52,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:12:52,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:12:52,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:12:52,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:12:51" (1/3) ... [2020-09-25 12:12:52,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c12c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:12:52, skipping insertion in model container [2020-09-25 12:12:52,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:12:52" (2/3) ... [2020-09-25 12:12:52,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33c12c07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:12:52, skipping insertion in model container [2020-09-25 12:12:52,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:12:52" (3/3) ... [2020-09-25 12:12:52,813 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072c.c [2020-09-25 12:12:52,824 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:12:52,834 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:12:52,855 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:12:52,881 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:12:52,882 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:12:52,882 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:12:52,882 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:12:52,882 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:12:52,882 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:12:52,882 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:12:52,882 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:12:52,905 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states. [2020-09-25 12:12:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-25 12:12:52,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:12:52,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:12:52,917 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:12:52,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:12:52,923 INFO L82 PathProgramCache]: Analyzing trace with hash -752135517, now seen corresponding path program 1 times [2020-09-25 12:12:52,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:12:52,933 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [609121734] [2020-09-25 12:12:52,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:12:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:12:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:12:53,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:12:53,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:12:53,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 12:12:53,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:12:53,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 12:12:53,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:12:53,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:12:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:12:53,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-25 12:12:53,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:12:53,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:12:53,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:12:53,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:12:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:12:53,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:12:53,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:12:53,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:12:53,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:12:53,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:12:53,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:12:53,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:12:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:12:53,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:12:53,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:12:53,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:12:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:12:53,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:12:53,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:12:53,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:12:53,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 12:12:53,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:12:53,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 12:12:53,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:12:53,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:12:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:12:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:12:53,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:12:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:12:53,485 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 12:12:53,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [609121734] [2020-09-25 12:12:53,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:12:53,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:12:53,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947852287] [2020-09-25 12:12:53,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:12:53,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:12:53,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:12:53,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:12:53,527 INFO L87 Difference]: Start difference. First operand 110 states. Second operand 4 states. [2020-09-25 12:12:53,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:12:53,944 INFO L93 Difference]: Finished difference Result 205 states and 236 transitions. [2020-09-25 12:12:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:12:53,948 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-09-25 12:12:53,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:12:53,966 INFO L225 Difference]: With dead ends: 205 [2020-09-25 12:12:53,966 INFO L226 Difference]: Without dead ends: 102 [2020-09-25 12:12:53,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:12:53,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-25 12:12:54,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-09-25 12:12:54,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-09-25 12:12:54,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 106 transitions. [2020-09-25 12:12:54,061 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 106 transitions. Word has length 31 [2020-09-25 12:12:54,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:12:54,062 INFO L479 AbstractCegarLoop]: Abstraction has 102 states and 106 transitions. [2020-09-25 12:12:54,062 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:12:54,063 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 106 transitions. [2020-09-25 12:12:54,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 12:12:54,065 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:12:54,065 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] [2020-09-25 12:12:54,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:12:54,066 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:12:54,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:12:54,066 INFO L82 PathProgramCache]: Analyzing trace with hash -34176642, now seen corresponding path program 1 times [2020-09-25 12:12:54,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:12:54,067 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801405180] [2020-09-25 12:12:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:12:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:12:54,116 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:12:54,116 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:12:54,122 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:12:54,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:12:54 BoogieIcfgContainer [2020-09-25 12:12:54,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:12:54,149 INFO L168 Benchmark]: Toolchain (without parser) took 2496.15 ms. Allocated memory was 140.5 MB in the beginning and 235.9 MB in the end (delta: 95.4 MB). Free memory was 103.4 MB in the beginning and 192.8 MB in the end (delta: -89.5 MB). Peak memory consumption was 5.9 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:54,150 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 12:12:54,151 INFO L168 Benchmark]: CACSL2BoogieTranslator took 511.30 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.7 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:54,152 INFO L168 Benchmark]: Boogie Preprocessor took 57.35 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:54,153 INFO L168 Benchmark]: RCFGBuilder took 575.78 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 149.7 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:12:54,154 INFO L168 Benchmark]: TraceAbstraction took 1340.68 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 149.0 MB in the beginning and 192.8 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:12:54,158 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 511.30 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.7 MB in the end (delta: -78.9 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.35 ms. Allocated memory is still 203.4 MB. Free memory was 181.7 MB in the beginning and 179.3 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 575.78 ms. Allocated memory is still 203.4 MB. Free memory was 179.3 MB in the beginning and 149.7 MB in the end (delta: 29.6 MB). Peak memory consumption was 29.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1340.68 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 149.0 MB in the beginning and 192.8 MB in the end (delta: -43.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 86]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someUnaryDOUBLEoperation at line 81, overapproximation of bitwiseAnd at line 29, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 85. Possible FailurePath: [L81] double x = -0.0; [L82] CALL, EXPR trunc_double(x) [L18] int signbit; [L19] int msw; [L20] unsigned int lsw; [L21] int exponent_less_1023; [L23] ieee_double_shape_type ew_u; [L24] ew_u.value = (x) [L25] EXPR ew_u.parts.msw [L25] (msw) = ew_u.parts.msw [L26] EXPR ew_u.parts.lsw [L26] (lsw) = ew_u.parts.lsw [L28] signbit = msw & 0x80000000 [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L30] COND FALSE !(exponent_less_1023 < 20) [L47] COND TRUE exponent_less_1023 > 51 [L48] COND TRUE exponent_less_1023 == 1024 [L49] return x + x; [L82] RET, EXPR trunc_double(x) [L82] double res = trunc_double(x); [L85] EXPR res == -0.0 && __signbit_double(res) == 1 [L85] COND TRUE !(res == -0.0 && __signbit_double(res) == 1) [L86] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 114 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 110 SDtfs, 17 SDslu, 69 SDs, 0 SdLazy, 135 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 76 NumberOfCodeBlocks, 76 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1530 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...