/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 interpolation-heuristic=FIRST --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_1052b.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:55:51,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:55:51,574 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:55:51,602 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:55:51,602 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:55:51,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:55:51,605 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:55:51,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:55:51,609 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:55:51,610 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:55:51,611 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:55:51,613 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:55:51,613 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:55:51,615 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:55:51,616 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:55:51,618 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:55:51,619 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:55:51,620 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:55:51,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:55:51,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:55:51,625 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:55:51,627 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:55:51,628 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:55:51,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:55:51,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 15:55:51,632 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 15:55:51,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 15:55:51,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 15:55:51,634 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 15:55:51,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 15:55:51,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 15:55:51,637 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 15:55:51,641 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 15:55:51,641 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 15:55:51,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 15:55:51,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 15:55:51,647 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 15:55:51,647 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 15:55:51,647 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:55:51,648 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:55:51,649 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:55:51,650 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 15:55:51,679 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:55:51,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:55:51,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:55:51,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:55:51,682 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:55:51,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:55:51,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:55:51,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:55:51,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:55:51,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:55:51,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:55:51,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:55:51,683 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:55:51,684 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:55:51,684 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:55:51,684 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:55:51,684 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:55:51,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:55:51,685 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:55:51,685 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:55:51,685 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:55:51,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:55:51,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:55:51,686 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:55:51,686 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:55:51,686 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:55:51,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:55:51,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:55:51,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:55:51,687 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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;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;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-24 15:55:52,313 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:55:52,332 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:55:52,337 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:55:52,338 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:55:52,339 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:55:52,340 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1052b.c [2020-09-24 15:55:52,425 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cd8f4de6/da8ad6ab540a4a32b557d284da9b37aa/FLAGa7412f4b1 [2020-09-24 15:55:53,029 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:55:53,030 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1052b.c [2020-09-24 15:55:53,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cd8f4de6/da8ad6ab540a4a32b557d284da9b37aa/FLAGa7412f4b1 [2020-09-24 15:55:53,333 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3cd8f4de6/da8ad6ab540a4a32b557d284da9b37aa [2020-09-24 15:55:53,348 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:55:53,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:55:53,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:55:53,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:55:53,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:55:53,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@145c9163 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53, skipping insertion in model container [2020-09-24 15:55:53,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,375 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:55:53,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:55:53,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:55:53,649 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:55:53,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:55:53,724 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:55:53,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53 WrapperNode [2020-09-24 15:55:53,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:55:53,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:55:53,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:55:53,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:55:53,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (1/1) ... [2020-09-24 15:55:53,876 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:55:53,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:55:53,877 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:55:53,877 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:55:53,878 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (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 15:55:53,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:55:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:55:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure floor_double [2020-09-24 15:55:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-24 15:55:53,977 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:55:53,977 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:55:53,978 INFO L130 BoogieDeclarations]: Found specification of procedure floor_double [2020-09-24 15:55:53,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 15:55:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-24 15:55:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 15:55:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 15:55:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 15:55:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-24 15:55:53,980 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-24 15:55:53,981 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:55:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:55:53,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:55:54,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:55:54,520 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-24 15:55:54,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:55:54 BoogieIcfgContainer [2020-09-24 15:55:54,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:55:54,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:55:54,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:55:54,532 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:55:54,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:55:53" (1/3) ... [2020-09-24 15:55:54,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d938d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:55:54, skipping insertion in model container [2020-09-24 15:55:54,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:55:53" (2/3) ... [2020-09-24 15:55:54,534 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d938d37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:55:54, skipping insertion in model container [2020-09-24 15:55:54,534 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:55:54" (3/3) ... [2020-09-24 15:55:54,536 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1052b.c [2020-09-24 15:55:54,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:55:54,558 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:55:54,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:55:54,606 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:55:54,606 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:55:54,607 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:55:54,607 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:55:54,607 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:55:54,607 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:55:54,607 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:55:54,607 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:55:54,632 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states. [2020-09-24 15:55:54,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-24 15:55:54,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:55:54,644 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] [2020-09-24 15:55:54,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:55:54,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:55:54,653 INFO L82 PathProgramCache]: Analyzing trace with hash -603915510, now seen corresponding path program 1 times [2020-09-24 15:55:54,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:55:54,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548740312] [2020-09-24 15:55:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:55:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:55:54,804 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:55:54,804 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:55:54,804 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:55:54,805 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:55:54,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 15:55:54,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:55:54,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 15:55:54,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:55:54,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:55:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 15:55:54,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:55:54,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:55:54,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:55:54,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:55:54,883 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:55:54,883 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:55:54,884 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:55:54,884 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:55:54,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 15:55:54,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:55:54,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 15:55:54,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:55:54,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:55:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 15:55:54,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:55:54,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:55:54,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-24 15:55:54,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:55:54,934 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:55:54,934 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:55:54,934 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:55:54,935 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:55:54,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 15:55:54,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:55:54,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 15:55:54,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:55:54,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:55:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 15:55:54,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:55:54,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:55:54,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-24 15:55:54,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:55:54,953 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-24 15:55:54,953 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-24 15:55:54,954 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-24 15:55:54,954 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 15:55:54,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-24 15:55:54,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 15:55:54,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 15:55:54,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-24 15:55:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 15:55:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-24 15:55:54,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 15:55:54,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 15:55:54,977 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 15:55:54,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548740312] [2020-09-24 15:55:54,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:55:54,981 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:55:54,982 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084222242] [2020-09-24 15:55:54,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:55:54,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:55:55,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:55:55,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:55:55,023 INFO L87 Difference]: Start difference. First operand 119 states. Second operand 4 states. [2020-09-24 15:55:55,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:55:55,442 INFO L93 Difference]: Finished difference Result 221 states and 264 transitions. [2020-09-24 15:55:55,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:55:55,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 41 [2020-09-24 15:55:55,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:55:55,461 INFO L225 Difference]: With dead ends: 221 [2020-09-24 15:55:55,461 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 15:55:55,467 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 15:55:55,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 15:55:55,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2020-09-24 15:55:55,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-24 15:55:55,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2020-09-24 15:55:55,576 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 41 [2020-09-24 15:55:55,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:55:55,577 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2020-09-24 15:55:55,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:55:55,577 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2020-09-24 15:55:55,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 15:55:55,582 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:55:55,582 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, 1, 1, 1] [2020-09-24 15:55:55,583 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:55:55,583 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:55:55,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:55:55,584 INFO L82 PathProgramCache]: Analyzing trace with hash -640308234, now seen corresponding path program 1 times [2020-09-24 15:55:55,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:55:55,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892949741] [2020-09-24 15:55:55,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:55:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 15:55:55,745 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 15:55:55,748 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 15:55:55,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:55:55,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:55:55 BoogieIcfgContainer [2020-09-24 15:55:55,800 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:55:55,813 INFO L168 Benchmark]: Toolchain (without parser) took 2460.81 ms. Allocated memory was 144.2 MB in the beginning and 229.1 MB in the end (delta: 84.9 MB). Free memory was 100.1 MB in the beginning and 188.4 MB in the end (delta: -88.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:55:55,815 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:55:55,816 INFO L168 Benchmark]: CACSL2BoogieTranslator took 370.24 ms. Allocated memory is still 144.2 MB. Free memory was 99.5 MB in the beginning and 87.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:55,819 INFO L168 Benchmark]: Boogie Preprocessor took 150.54 ms. Allocated memory was 144.2 MB in the beginning and 199.2 MB in the end (delta: 55.1 MB). Free memory was 87.6 MB in the beginning and 176.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:55,820 INFO L168 Benchmark]: RCFGBuilder took 650.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.2 MB in the beginning and 146.3 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:55:55,821 INFO L168 Benchmark]: TraceAbstraction took 1272.13 ms. Allocated memory was 199.2 MB in the beginning and 229.1 MB in the end (delta: 29.9 MB). Free memory was 145.6 MB in the beginning and 188.4 MB in the end (delta: -42.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:55:55,828 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 144.2 MB. Free memory was 118.7 MB in the beginning and 118.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 370.24 ms. Allocated memory is still 144.2 MB. Free memory was 99.5 MB in the beginning and 87.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.54 ms. Allocated memory was 144.2 MB in the beginning and 199.2 MB in the end (delta: 55.1 MB). Free memory was 87.6 MB in the beginning and 176.2 MB in the end (delta: -88.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 650.36 ms. Allocated memory is still 199.2 MB. Free memory was 176.2 MB in the beginning and 146.3 MB in the end (delta: 29.9 MB). Peak memory consumption was 29.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1272.13 ms. Allocated memory was 199.2 MB in the beginning and 229.1 MB in the end (delta: 29.9 MB). Free memory was 145.6 MB in the beginning and 188.4 MB in the end (delta: -42.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 91, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 88. Possible FailurePath: [L14] static const double huge_floor = 1.0e300; [L101] double x = -1.0 / 0.0; [L102] CALL, EXPR floor_double(x) [L17] __int32_t i0, i1, j0; [L18] __uint32_t i, j; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (i0) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (i1) = ew_u.parts.lsw [L25] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff [L26] COND FALSE !(j0 < 20) [L47] COND TRUE j0 > 51 [L48] COND TRUE j0 == 0x400 [L49] return x + x; [L102] RET, EXPR floor_double(x) [L102] double res = floor_double(x); [L105] CALL, EXPR isinf_double(res) [L81] __int32_t hx, lx; [L83] ieee_double_shape_type ew_u; [L84] ew_u.value = (x) [L85] EXPR ew_u.parts.msw [L85] (hx) = ew_u.parts.msw [L86] EXPR ew_u.parts.lsw [L86] (lx) = ew_u.parts.lsw [L88] hx &= 0x7fffffff [L89] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L90] hx = 0x7ff00000 - hx [L91] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L105] RET, EXPR isinf_double(res) [L105] COND TRUE !isinf_double(res) [L106] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 119 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 129 SDtfs, 21 SDslu, 97 SDs, 0 SdLazy, 141 SolverSat, 6 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=119occurred 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, 0.1s InterpolantComputationTime, 110 NumberOfCodeBlocks, 110 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 3040 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...