/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_1251b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:48:07,386 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:48:07,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:48:07,430 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:48:07,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:48:07,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:48:07,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:48:07,447 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:48:07,450 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:48:07,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:48:07,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:48:07,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:48:07,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:48:07,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:48:07,460 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:48:07,461 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:48:07,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:48:07,464 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:48:07,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:48:07,473 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:48:07,475 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:48:07,476 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:48:07,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:48:07,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:48:07,490 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:48:07,490 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:48:07,490 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:48:07,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:48:07,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:48:07,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:48:07,498 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:48:07,499 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:48:07,499 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:48:07,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:48:07,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:48:07,507 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:48:07,507 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:48:07,508 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:48:07,508 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:48:07,509 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:48:07,510 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:48:07,511 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 [2020-08-22 03:48:07,547 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:48:07,548 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:48:07,550 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:48:07,550 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:48:07,550 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:48:07,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:48:07,551 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:48:07,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:48:07,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:48:07,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:48:07,552 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:48:07,553 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:48:07,553 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:48:07,553 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:48:07,553 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:48:07,554 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:48:07,554 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:48:07,554 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:48:07,554 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:48:07,554 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:48:07,555 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:48:07,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:48:07,555 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:48:07,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:48:07,555 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:48:07,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:48:07,556 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:48:07,556 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:48:07,556 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:48:07,556 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-08-22 03:48:07,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:48:07,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:48:07,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:48:07,886 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:48:07,887 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:48:07,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-08-22 03:48:07,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed48fbc14/5e84e84e8a1c4ea6a22c6e8c429a4cc8/FLAGb41359408 [2020-08-22 03:48:08,402 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:48:08,403 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1251b.c [2020-08-22 03:48:08,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed48fbc14/5e84e84e8a1c4ea6a22c6e8c429a4cc8/FLAGb41359408 [2020-08-22 03:48:08,779 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ed48fbc14/5e84e84e8a1c4ea6a22c6e8c429a4cc8 [2020-08-22 03:48:08,790 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:48:08,792 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:48:08,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:48:08,794 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:48:08,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:48:08,799 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:48:08" (1/1) ... [2020-08-22 03:48:08,802 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e93eba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:08, skipping insertion in model container [2020-08-22 03:48:08,803 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:48:08" (1/1) ... [2020-08-22 03:48:08,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:48:08,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:48:09,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:48:09,166 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:48:09,220 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:48:09,342 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:48:09,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09 WrapperNode [2020-08-22 03:48:09,344 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:48:09,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:48:09,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:48:09,345 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:48:09,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (1/1) ... [2020-08-22 03:48:09,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (1/1) ... [2020-08-22 03:48:09,375 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (1/1) ... [2020-08-22 03:48:09,375 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (1/1) ... [2020-08-22 03:48:09,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (1/1) ... [2020-08-22 03:48:09,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (1/1) ... [2020-08-22 03:48:09,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (1/1) ... [2020-08-22 03:48:09,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:48:09,396 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:48:09,396 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:48:09,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:48:09,397 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (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 [2020-08-22 03:48:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:48:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:48:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 03:48:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_double [2020-08-22 03:48:09,466 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_double [2020-08-22 03:48:09,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:48:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:48:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-08-22 03:48:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 03:48:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_double [2020-08-22 03:48:09,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:48:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 03:48:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:48:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:48:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_double [2020-08-22 03:48:09,468 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:48:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:48:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:48:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 03:48:09,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:48:09,851 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:48:09,852 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 03:48:09,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:48:09 BoogieIcfgContainer [2020-08-22 03:48:09,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:48:09,859 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:48:09,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:48:09,866 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:48:09,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:48:08" (1/3) ... [2020-08-22 03:48:09,867 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505161e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:48:09, skipping insertion in model container [2020-08-22 03:48:09,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:48:09" (2/3) ... [2020-08-22 03:48:09,868 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@505161e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:48:09, skipping insertion in model container [2020-08-22 03:48:09,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:48:09" (3/3) ... [2020-08-22 03:48:09,871 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1251b.c [2020-08-22 03:48:09,881 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:48:09,888 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:48:09,900 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:48:09,920 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:48:09,921 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:48:09,921 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:48:09,921 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:48:09,921 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:48:09,921 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:48:09,922 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:48:09,922 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:48:09,939 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-08-22 03:48:09,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 03:48:09,946 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:09,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:48:09,947 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:09,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:09,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1800374877, now seen corresponding path program 1 times [2020-08-22 03:48:09,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:09,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121970104] [2020-08-22 03:48:09,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:48:10,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:48:10,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:48:10,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:48:10,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:48:10,227 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121970104] [2020-08-22 03:48:10,229 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:48:10,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 03:48:10,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298522256] [2020-08-22 03:48:10,236 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 03:48:10,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:48:10,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 03:48:10,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 03:48:10,253 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 4 states. [2020-08-22 03:48:10,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:48:10,465 INFO L93 Difference]: Finished difference Result 72 states and 94 transitions. [2020-08-22 03:48:10,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 03:48:10,468 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-08-22 03:48:10,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:48:10,479 INFO L225 Difference]: With dead ends: 72 [2020-08-22 03:48:10,479 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 03:48:10,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:48:10,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 03:48:10,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-22 03:48:10,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-22 03:48:10,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 44 transitions. [2020-08-22 03:48:10,535 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 44 transitions. Word has length 27 [2020-08-22 03:48:10,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:48:10,535 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 44 transitions. [2020-08-22 03:48:10,536 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 03:48:10,536 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 44 transitions. [2020-08-22 03:48:10,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 03:48:10,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:10,538 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] [2020-08-22 03:48:10,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:48:10,539 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:10,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:10,540 INFO L82 PathProgramCache]: Analyzing trace with hash 283227385, now seen corresponding path program 1 times [2020-08-22 03:48:10,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:10,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519382776] [2020-08-22 03:48:10,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:10,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:48:10,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:48:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:48:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:48:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:10,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:48:10,823 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519382776] [2020-08-22 03:48:10,823 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:48:10,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:48:10,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571864962] [2020-08-22 03:48:10,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:48:10,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:48:10,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:48:10,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:48:10,827 INFO L87 Difference]: Start difference. First operand 37 states and 44 transitions. Second operand 6 states. [2020-08-22 03:48:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:48:11,110 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-08-22 03:48:11,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:48:11,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-08-22 03:48:11,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:48:11,122 INFO L225 Difference]: With dead ends: 47 [2020-08-22 03:48:11,122 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 03:48:11,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:48:11,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 03:48:11,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-22 03:48:11,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 03:48:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-08-22 03:48:11,136 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 28 [2020-08-22 03:48:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:48:11,136 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-08-22 03:48:11,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:48:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-08-22 03:48:11,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 03:48:11,138 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:11,138 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] [2020-08-22 03:48:11,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:48:11,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:11,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:11,139 INFO L82 PathProgramCache]: Analyzing trace with hash 827998108, now seen corresponding path program 1 times [2020-08-22 03:48:11,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:11,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905433670] [2020-08-22 03:48:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:11,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:11,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:48:11,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:11,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 03:48:11,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 03:48:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:11,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 03:48:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:48:11,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:48:11,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905433670] [2020-08-22 03:48:11,276 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:48:11,276 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 03:48:11,276 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043740899] [2020-08-22 03:48:11,277 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 03:48:11,277 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:48:11,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 03:48:11,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:48:11,278 INFO L87 Difference]: Start difference. First operand 41 states and 49 transitions. Second operand 6 states. [2020-08-22 03:48:11,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:48:11,480 INFO L93 Difference]: Finished difference Result 51 states and 60 transitions. [2020-08-22 03:48:11,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:48:11,481 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-08-22 03:48:11,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:48:11,482 INFO L225 Difference]: With dead ends: 51 [2020-08-22 03:48:11,482 INFO L226 Difference]: Without dead ends: 45 [2020-08-22 03:48:11,483 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 03:48:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-22 03:48:11,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 41. [2020-08-22 03:48:11,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 03:48:11,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 49 transitions. [2020-08-22 03:48:11,492 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 49 transitions. Word has length 31 [2020-08-22 03:48:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:48:11,493 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 49 transitions. [2020-08-22 03:48:11,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 03:48:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 49 transitions. [2020-08-22 03:48:11,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 03:48:11,495 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:48:11,495 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] [2020-08-22 03:48:11,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:48:11,495 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:48:11,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:48:11,496 INFO L82 PathProgramCache]: Analyzing trace with hash 631484603, now seen corresponding path program 1 times [2020-08-22 03:48:11,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:48:11,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1402353009] [2020-08-22 03:48:11,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:48:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 03:48:11,519 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 03:48:11,519 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:48:11,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 03:48:11,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:48:11 BoogieIcfgContainer [2020-08-22 03:48:11,544 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:48:11,547 INFO L168 Benchmark]: Toolchain (without parser) took 2754.69 ms. Allocated memory was 146.8 MB in the beginning and 236.5 MB in the end (delta: 89.7 MB). Free memory was 102.6 MB in the beginning and 144.8 MB in the end (delta: -42.1 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:11,548 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:48:11,549 INFO L168 Benchmark]: CACSL2BoogieTranslator took 549.80 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.4 MB in the beginning and 180.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:11,550 INFO L168 Benchmark]: Boogie Preprocessor took 50.99 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 178.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:11,551 INFO L168 Benchmark]: RCFGBuilder took 461.60 ms. Allocated memory is still 202.4 MB. Free memory was 178.2 MB in the beginning and 158.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:11,552 INFO L168 Benchmark]: TraceAbstraction took 1685.01 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 158.2 MB in the beginning and 144.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:48:11,556 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 549.80 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.4 MB in the beginning and 180.6 MB in the end (delta: -78.1 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.99 ms. Allocated memory is still 202.4 MB. Free memory was 180.6 MB in the beginning and 178.2 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 461.60 ms. Allocated memory is still 202.4 MB. Free memory was 178.2 MB in the beginning and 158.9 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1685.01 ms. Allocated memory was 202.4 MB in the beginning and 236.5 MB in the end (delta: 34.1 MB). Free memory was 158.2 MB in the beginning and 144.8 MB in the end (delta: 13.4 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 78]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 77, overapproximation of someBinaryArithmeticDOUBLEoperation at line 65. Possible FailurePath: [L64] double x = __VERIFIER_nondet_double(); [L65] double y = 0.0 / 0.0; [L72] CALL, EXPR isnan_double(x) [L16] return x != x; [L72] RET, EXPR isnan_double(x) [L72] COND TRUE !isnan_double(x) [L74] CALL, EXPR fmax_double(x, y) [L55] CALL, EXPR __fpclassify_double(x) [L27] __uint32_t msw, lsw; [L30] ieee_double_shape_type ew_u; [L31] ew_u.value = (x) [L32] EXPR ew_u.parts.msw [L32] (msw) = ew_u.parts.msw [L33] EXPR ew_u.parts.lsw [L33] (lsw) = ew_u.parts.lsw [L36-L37] COND FALSE !((msw == 0x00000000 && lsw == 0x00000000) || (msw == 0x80000000 && lsw == 0x00000000)) [L39-L40] COND FALSE !((msw >= 0x00100000 && msw <= 0x7fefffff) || (msw >= 0x80100000 && msw <= 0xffefffff)) [L42-L43] COND FALSE !(( msw <= 0x000fffff) || (msw >= 0x80000000 && msw <= 0x800fffff)) [L46-L47] COND FALSE !((msw == 0x7ff00000 && lsw == 0x00000000) || (msw == 0xfff00000 && lsw == 0x00000000)) [L50] return 0; [L55] RET, EXPR __fpclassify_double(x) [L55] COND TRUE __fpclassify_double(x) == 0 [L56] return y; [L74] RET, EXPR fmax_double(x, y) [L74] double res = fmax_double(x, y); [L77] COND TRUE res != x [L78] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 116 SDtfs, 124 SDslu, 43 SDs, 0 SdLazy, 254 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 117 NumberOfCodeBlocks, 117 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 5500 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...