/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:03:08,790 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:03:08,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:03:08,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:03:08,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:03:08,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:03:08,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:03:08,808 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:03:08,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:03:08,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:03:08,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:03:08,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:03:08,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:03:08,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:03:08,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:03:08,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:03:08,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:03:08,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:03:08,819 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:03:08,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:03:08,824 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:03:08,826 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:03:08,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:03:08,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:03:08,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:03:08,834 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:03:08,834 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:03:08,835 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:03:08,835 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:03:08,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:03:08,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:03:08,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:03:08,840 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:03:08,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:03:08,844 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:03:08,844 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:03:08,846 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:03:08,846 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:03:08,846 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:03:08,847 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:03:08,849 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:03:08,850 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:03:08,864 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:03:08,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:03:08,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:03:08,866 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:03:08,866 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:03:08,866 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:03:08,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:03:08,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:03:08,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:03:08,867 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:03:08,868 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:03:08,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:03:08,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:03:08,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:03:08,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:03:08,869 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:03:08,870 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:03:08,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:03:08,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:03:08,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:03:08,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:03:08,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:03:08,871 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-07-17 17:03:09,138 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:03:09,155 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:03:09,158 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:03:09,159 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:03:09,160 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:03:09,160 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-07-17 17:03:09,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac1c99af/b30be9f6e5544e94bb5c7d7744f0f735/FLAG756f19933 [2020-07-17 17:03:09,662 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:03:09,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1072d.c [2020-07-17 17:03:09,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac1c99af/b30be9f6e5544e94bb5c7d7744f0f735/FLAG756f19933 [2020-07-17 17:03:10,054 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac1c99af/b30be9f6e5544e94bb5c7d7744f0f735 [2020-07-17 17:03:10,063 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:03:10,065 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:03:10,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:03:10,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:03:10,070 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:03:10,071 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b318aea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10, skipping insertion in model container [2020-07-17 17:03:10,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:03:10,100 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:03:10,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:03:10,284 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:03:10,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:03:10,428 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:03:10,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10 WrapperNode [2020-07-17 17:03:10,429 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:03:10,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:03:10,430 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:03:10,431 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:03:10,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,452 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... [2020-07-17 17:03:10,483 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:03:10,483 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:03:10,484 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:03:10,484 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:03:10,485 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 17:03:10,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:03:10,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:03:10,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-07-17 17:03:10,545 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_double [2020-07-17 17:03:10,545 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-07-17 17:03:10,545 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:03:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:03:10,545 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-07-17 17:03:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_double [2020-07-17 17:03:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:03:10,546 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 17:03:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:03:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:03:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:03:10,547 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 17:03:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-07-17 17:03:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:03:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:03:10,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:03:10,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:03:10,951 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-07-17 17:03:10,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:03:10 BoogieIcfgContainer [2020-07-17 17:03:10,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:03:10,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:03:10,958 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:03:10,961 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:03:10,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:03:10" (1/3) ... [2020-07-17 17:03:10,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ba4f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:03:10, skipping insertion in model container [2020-07-17 17:03:10,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:03:10" (2/3) ... [2020-07-17 17:03:10,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39ba4f58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:03:10, skipping insertion in model container [2020-07-17 17:03:10,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:03:10" (3/3) ... [2020-07-17 17:03:10,965 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1072d.c [2020-07-17 17:03:10,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:03:10,986 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:03:11,000 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:03:11,020 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:03:11,020 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:03:11,021 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:03:11,021 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:03:11,021 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:03:11,021 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:03:11,021 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:03:11,021 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:03:11,038 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states. [2020-07-17 17:03:11,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 17:03:11,050 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:03:11,051 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] [2020-07-17 17:03:11,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:03:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:03:11,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1396348261, now seen corresponding path program 1 times [2020-07-17 17:03:11,062 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:03:11,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82432785] [2020-07-17 17:03:11,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:03:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:11,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:03:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:03:11,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82432785] [2020-07-17 17:03:11,295 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:03:11,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:03:11,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024269744] [2020-07-17 17:03:11,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:03:11,302 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:03:11,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:03:11,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:03:11,318 INFO L87 Difference]: Start difference. First operand 114 states. Second operand 4 states. [2020-07-17 17:03:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:03:11,628 INFO L93 Difference]: Finished difference Result 213 states and 242 transitions. [2020-07-17 17:03:11,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:03:11,631 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-07-17 17:03:11,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:03:11,642 INFO L225 Difference]: With dead ends: 213 [2020-07-17 17:03:11,643 INFO L226 Difference]: Without dead ends: 107 [2020-07-17 17:03:11,647 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 [2020-07-17 17:03:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-17 17:03:11,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2020-07-17 17:03:11,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-07-17 17:03:11,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 110 transitions. [2020-07-17 17:03:11,702 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 110 transitions. Word has length 40 [2020-07-17 17:03:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:03:11,703 INFO L479 AbstractCegarLoop]: Abstraction has 107 states and 110 transitions. [2020-07-17 17:03:11,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:03:11,715 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 110 transitions. [2020-07-17 17:03:11,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-07-17 17:03:11,717 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:03:11,718 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] [2020-07-17 17:03:11,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:03:11,719 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:03:11,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:03:11,719 INFO L82 PathProgramCache]: Analyzing trace with hash -247930506, now seen corresponding path program 1 times [2020-07-17 17:03:11,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:03:11,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411476038] [2020-07-17 17:03:11,720 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:03:11,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:03:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:03:12,150 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:03:12,151 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:03:12,156 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:03:12,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:03:12 BoogieIcfgContainer [2020-07-17 17:03:12,199 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:03:12,202 INFO L168 Benchmark]: Toolchain (without parser) took 2136.01 ms. Allocated memory was 146.3 MB in the beginning and 234.4 MB in the end (delta: 88.1 MB). Free memory was 104.2 MB in the beginning and 183.6 MB in the end (delta: -79.4 MB). Peak memory consumption was 8.7 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:12,203 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 17:03:12,204 INFO L168 Benchmark]: CACSL2BoogieTranslator took 362.76 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.7 MB in the beginning and 182.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:12,205 INFO L168 Benchmark]: Boogie Preprocessor took 53.71 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 178.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:12,206 INFO L168 Benchmark]: RCFGBuilder took 473.62 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 149.0 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. [2020-07-17 17:03:12,207 INFO L168 Benchmark]: TraceAbstraction took 1240.62 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 148.0 MB in the beginning and 183.6 MB in the end (delta: -35.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 17:03:12,211 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 146.3 MB. Free memory is still 122.4 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 362.76 ms. Allocated memory was 146.3 MB in the beginning and 203.4 MB in the end (delta: 57.1 MB). Free memory was 103.7 MB in the beginning and 182.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 53.71 ms. Allocated memory is still 203.4 MB. Free memory was 182.0 MB in the beginning and 178.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.62 ms. Allocated memory is still 203.4 MB. Free memory was 178.8 MB in the beginning and 149.0 MB in the end (delta: 29.8 MB). Peak memory consumption was 29.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1240.62 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 148.0 MB in the beginning and 183.6 MB in the end (delta: -35.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 89]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 74, overapproximation of someBinaryArithmeticDOUBLEoperation at line 49, overapproximation of bitwiseAnd at line 71. Possible FailurePath: [L84] double x = -1.0 / 0.0; [L85] CALL, EXPR trunc_double(x) VAL [\old(x)=12884901898] [L18] int signbit; VAL [\old(x)=12884901898, x=12884901898] [L19] int msw; VAL [\old(x)=12884901898, x=12884901898] [L20] unsigned int lsw; VAL [\old(x)=12884901898, x=12884901898] [L21] int exponent_less_1023; VAL [\old(x)=12884901898, x=12884901898] [L23] ieee_double_shape_type ew_u; VAL [\old(x)=12884901898, ew_u={3:0}, x=12884901898] [L24] ew_u.value = (x) VAL [\old(x)=12884901898, ew_u={3:0}, x=12884901898] [L25] EXPR ew_u.parts.msw VAL [\old(x)=12884901898, ew_u={3:0}, ew_u.parts.msw=8589934591, x=12884901898] [L25] (msw) = ew_u.parts.msw VAL [\old(x)=12884901898, ew_u={3:0}, ew_u.parts.msw=8589934591, msw=-1, x=12884901898] [L26] EXPR ew_u.parts.lsw VAL [\old(x)=12884901898, ew_u={3:0}, ew_u.parts.lsw=12884901892, msw=-1, x=12884901898] [L26] (lsw) = ew_u.parts.lsw VAL [(lsw) = ew_u.parts.lsw=12884901894, \old(x)=12884901898, ew_u={3:0}, ew_u.parts.lsw=12884901892, lsw=4, msw=-1, x=12884901898] [L28] signbit = msw & 0x80000000 VAL [\old(x)=12884901898, lsw=4, msw=-1, signbit=5, x=12884901898] [L29] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=12884901898, exponent_less_1023=1024, lsw=4, msw=-1, signbit=5, x=12884901898] [L30] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=12884901898, exponent_less_1023=1024, lsw=4, msw=-1, signbit=5, x=12884901898] [L47] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=12884901898, exponent_less_1023=1024, lsw=4, msw=-1, signbit=5, x=12884901898] [L48] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=12884901898, exponent_less_1023=1024, lsw=4, msw=-1, signbit=5, x=12884901898] [L49] return x + x; VAL [\old(x)=12884901898, exponent_less_1023=1024, lsw=4, msw=-1, signbit=5, x=12884901898] [L85] RET, EXPR trunc_double(x) VAL [trunc_double(x)=12884901890, x=12884901898] [L85] double res = trunc_double(x); VAL [res=12884901890, trunc_double(x)=12884901890, x=12884901898] [L88] CALL, EXPR isinf_double(res) VAL [\old(x)=12884901890] [L64] __int32_t hx, lx; VAL [\old(x)=12884901890, x=12884901890] [L66] ieee_double_shape_type ew_u; VAL [\old(x)=12884901890, ew_u={2:0}, x=12884901890] [L67] ew_u.value = (x) VAL [\old(x)=12884901890, ew_u={2:0}, x=12884901890] [L68] EXPR ew_u.parts.msw VAL [\old(x)=12884901890, ew_u={2:0}, ew_u.parts.msw=12884901887, x=12884901890] [L68] (hx) = ew_u.parts.msw VAL [\old(x)=12884901890, ew_u={2:0}, ew_u.parts.msw=12884901887, hx=-1, x=12884901890] [L69] EXPR ew_u.parts.lsw VAL [\old(x)=12884901890, ew_u={2:0}, ew_u.parts.lsw=4294967296, hx=-1, x=12884901890] [L69] (lx) = ew_u.parts.lsw VAL [\old(x)=12884901890, ew_u={2:0}, ew_u.parts.lsw=4294967296, hx=-1, lx=0, x=12884901890] [L71] hx &= 0x7fffffff VAL [\old(x)=12884901890, lx=0, x=12884901890] [L72] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=12884901890, hx=-3, lx=0, x=12884901890] [L73] hx = 0x7ff00000 - hx VAL [\old(x)=12884901890, hx=2146435075, lx=0, x=12884901890] [L74] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=12884901890, \result=0, hx=2146435075, lx=0, x=12884901890] [L88] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=12884901890, x=12884901898] [L88] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=12884901890, x=12884901898] [L89] __VERIFIER_error() VAL [res=12884901890, x=12884901898] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 118 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 19 SDslu, 69 SDs, 0 SdLazy, 139 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=114occurred 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, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 108 NumberOfCodeBlocks, 108 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 2808 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...