/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_1130a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:36:22,622 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:36:22,625 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:36:22,653 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:36:22,653 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:36:22,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:36:22,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:36:22,658 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:36:22,660 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:36:22,664 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:36:22,665 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:36:22,666 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:36:22,666 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:36:22,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:36:22,672 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:36:22,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:36:22,674 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:36:22,675 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:36:22,677 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:36:22,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:36:22,680 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:36:22,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:36:22,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:36:22,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:36:22,686 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 21:36:22,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:36:22,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:36:22,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:36:22,691 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:36:22,692 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:36:22,693 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:36:22,694 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:36:22,694 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:36:22,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:36:22,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:36:22,696 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:36:22,697 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 21:36:22,708 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:36:22,708 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:36:22,710 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:36:22,710 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:36:22,710 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:36:22,710 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:36:22,710 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:36:22,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:36:22,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:36:22,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:36:22,711 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:36:22,711 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:36:22,712 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:36:22,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:36:22,712 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:36:22,712 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:36:22,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:36:22,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:36:22,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:36:22,713 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:36:22,713 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:36:22,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:36:22,714 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 [2020-09-04 21:36:23,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:36:23,191 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:36:23,195 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:36:23,197 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:36:23,197 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:36:23,198 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-04 21:36:23,291 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de2b2c6c3/296289124c9544a7929289f25f40d91c/FLAGaf371ba01 [2020-09-04 21:36:23,830 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:36:23,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1130a.c [2020-09-04 21:36:23,845 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de2b2c6c3/296289124c9544a7929289f25f40d91c/FLAGaf371ba01 [2020-09-04 21:36:24,148 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/de2b2c6c3/296289124c9544a7929289f25f40d91c [2020-09-04 21:36:24,164 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:36:24,167 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:36:24,171 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:24,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:36:24,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:36:24,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25989b4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24, skipping insertion in model container [2020-09-04 21:36:24,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:36:24,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:36:24,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:24,519 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:36:24,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:24,689 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:36:24,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24 WrapperNode [2020-09-04 21:36:24,690 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:24,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:36:24,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:36:24,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:36:24,705 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,752 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (1/1) ... [2020-09-04 21:36:24,760 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:36:24,760 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:36:24,761 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:36:24,761 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:36:24,762 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (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 [2020-09-04 21:36:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:36:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:36:24,837 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 21:36:24,838 INFO L138 BoogieDeclarations]: Found implementation of procedure fmod_double [2020-09-04 21:36:24,838 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-04 21:36:24,838 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:36:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:36:24,838 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-09-04 21:36:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 21:36:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure fmod_double [2020-09-04 21:36:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:36:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:36:24,839 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:36:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:36:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:36:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:36:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-04 21:36:24,840 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:36:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:36:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-09-04 21:36:24,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:36:25,515 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:36:25,515 INFO L295 CfgBuilder]: Removed 16 assume(true) statements. [2020-09-04 21:36:25,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:25 BoogieIcfgContainer [2020-09-04 21:36:25,526 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:36:25,527 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:36:25,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:36:25,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:36:25,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:36:24" (1/3) ... [2020-09-04 21:36:25,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5ab9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:25, skipping insertion in model container [2020-09-04 21:36:25,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:24" (2/3) ... [2020-09-04 21:36:25,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e5ab9de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:25, skipping insertion in model container [2020-09-04 21:36:25,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:25" (3/3) ... [2020-09-04 21:36:25,536 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1130a.c [2020-09-04 21:36:25,547 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:36:25,557 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:36:25,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:36:25,600 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:36:25,600 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:36:25,601 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:36:25,601 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:36:25,601 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:36:25,601 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:36:25,601 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:36:25,601 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:36:25,624 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states. [2020-09-04 21:36:25,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-04 21:36:25,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:25,642 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] [2020-09-04 21:36:25,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:25,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:25,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1608489446, now seen corresponding path program 1 times [2020-09-04 21:36:25,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:25,658 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63072102] [2020-09-04 21:36:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:25,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:36:25,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:25,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 21:36:25,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 21:36:25,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63072102] [2020-09-04 21:36:25,953 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:36:25,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:36:25,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58429942] [2020-09-04 21:36:25,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:36:25,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:36:25,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:36:25,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:36:25,983 INFO L87 Difference]: Start difference. First operand 221 states. Second operand 4 states. [2020-09-04 21:36:26,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:36:26,539 INFO L93 Difference]: Finished difference Result 415 states and 505 transitions. [2020-09-04 21:36:26,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:36:26,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 46 [2020-09-04 21:36:26,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:36:26,558 INFO L225 Difference]: With dead ends: 415 [2020-09-04 21:36:26,558 INFO L226 Difference]: Without dead ends: 213 [2020-09-04 21:36:26,564 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 21:36:26,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-09-04 21:36:26,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 213. [2020-09-04 21:36:26,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-04 21:36:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 240 transitions. [2020-09-04 21:36:26,637 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 240 transitions. Word has length 46 [2020-09-04 21:36:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:36:26,638 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 240 transitions. [2020-09-04 21:36:26,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:36:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 240 transitions. [2020-09-04 21:36:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-09-04 21:36:26,641 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:26,642 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, 1, 1, 1, 1, 1] [2020-09-04 21:36:26,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:36:26,642 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:26,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:26,643 INFO L82 PathProgramCache]: Analyzing trace with hash 1262573606, now seen corresponding path program 1 times [2020-09-04 21:36:26,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:26,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190168268] [2020-09-04 21:36:26,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:26,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:26,836 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:26,881 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:36:26,881 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:36:26,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:36:26,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:36:26 BoogieIcfgContainer [2020-09-04 21:36:26,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:36:26,945 INFO L168 Benchmark]: Toolchain (without parser) took 2776.84 ms. Allocated memory was 139.5 MB in the beginning and 236.5 MB in the end (delta: 97.0 MB). Free memory was 103.4 MB in the beginning and 135.6 MB in the end (delta: -32.2 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:26,946 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 21:36:26,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 519.34 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 178.1 MB in the end (delta: -75.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:26,948 INFO L168 Benchmark]: Boogie Preprocessor took 69.45 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:26,949 INFO L168 Benchmark]: RCFGBuilder took 765.60 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 127.1 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:26,950 INFO L168 Benchmark]: TraceAbstraction took 1413.96 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 126.5 MB in the beginning and 135.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:26,954 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 519.34 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.0 MB in the beginning and 178.1 MB in the end (delta: -75.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.45 ms. Allocated memory is still 202.9 MB. Free memory was 178.1 MB in the beginning and 175.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 765.60 ms. Allocated memory is still 202.9 MB. Free memory was 175.4 MB in the beginning and 127.1 MB in the end (delta: 48.3 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1413.96 ms. Allocated memory was 202.9 MB in the beginning and 236.5 MB in the end (delta: 33.6 MB). Free memory was 126.5 MB in the beginning and 135.6 MB in the end (delta: -9.1 MB). Peak memory consumption was 24.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 191]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 44, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of bitwiseAnd at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 45, overapproximation of someBinaryDOUBLEComparisonOperation at line 190, overapproximation of bitwiseXor at line 40. Possible FailurePath: [L18-L21] static const double one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [\old(one_fmod)=4294967311, \old(Zero_fmod)=4294967297, \old(Zero_fmod)=4294967304, one_fmod=1, Zero_fmod={3:0}] [L182] double x = 0.0; VAL [one_fmod=1, x=0, Zero_fmod={3:0}] [L183] double y = __VERIFIER_nondet_double(); VAL [__VERIFIER_nondet_double()=4294967309, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L185] COND TRUE y < 0.0 || y > 0.0 VAL [one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L187] CALL, EXPR fmod_double(x, y) VAL [\old(x)=0, \old(y)=4294967309, one_fmod=1, Zero_fmod={3:0}] [L24] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [\old(x)=0, \old(y)=4294967309, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L25] __uint32_t lx, ly, lz; VAL [\old(x)=0, \old(y)=4294967309, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L28] ieee_double_shape_type ew_u; VAL [\old(x)=0, \old(y)=4294967309, ew_u={5:0}, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L29] ew_u.value = (x) VAL [\old(x)=0, \old(y)=4294967309, ew_u={5:0}, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L30] EXPR ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967309, ew_u={5:0}, ew_u.parts.msw=4294967294, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L30] (hx) = ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967309, ew_u={5:0}, ew_u.parts.msw=4294967294, hx=-2, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L31] EXPR ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967309, ew_u={5:0}, ew_u.parts.lsw=4294967306, hx=-2, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L31] (lx) = ew_u.parts.lsw VAL [(lx) = ew_u.parts.lsw=4294967300, \old(x)=0, \old(y)=4294967309, ew_u={5:0}, ew_u.parts.lsw=4294967306, hx=-2, lx=4294967306, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L34] ieee_double_shape_type ew_u; VAL [\old(x)=0, \old(y)=4294967309, ew_u={2:0}, hx=-2, lx=4294967306, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L35] ew_u.value = (y) VAL [\old(x)=0, \old(y)=4294967309, ew_u={2:0}, hx=-2, lx=4294967306, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L36] EXPR ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967309, ew_u={2:0}, ew_u.parts.msw=0, hx=-2, lx=4294967306, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L36] (hy) = ew_u.parts.msw VAL [\old(x)=0, \old(y)=4294967309, ew_u={2:0}, ew_u.parts.msw=0, hx=-2, hy=0, lx=4294967306, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L37] EXPR ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967309, ew_u={2:0}, ew_u.parts.lsw=4294967302, hx=-2, hy=0, lx=4294967306, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L37] (ly) = ew_u.parts.lsw VAL [\old(x)=0, \old(y)=4294967309, ew_u={2:0}, ew_u.parts.lsw=4294967302, hx=-2, hy=0, lx=4294967306, ly=4294967302, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L39] sx = hx & 0x80000000 VAL [\old(x)=0, \old(y)=4294967309, hx=-2, hy=0, lx=4294967306, ly=4294967302, one_fmod=1, sx=-1, x=0, y=4294967309, Zero_fmod={3:0}] [L40] hx ^= sx VAL [\old(x)=0, \old(y)=4294967309, hy=0, lx=4294967306, ly=4294967302, one_fmod=1, sx=-1, x=0, y=4294967309, Zero_fmod={3:0}] [L41] hy &= 0x7fffffff VAL [\old(x)=0, \old(y)=4294967309, lx=4294967306, ly=4294967302, one_fmod=1, sx=-1, x=0, y=4294967309, Zero_fmod={3:0}] [L43-L44] COND TRUE (hy | ly) == 0 || (hx >= 0x7ff00000) || ((hy | ((ly | -ly) >> 31)) > 0x7ff00000) VAL [\old(x)=0, \old(y)=4294967309, hx=2146435072, lx=4294967306, ly=4294967302, one_fmod=1, sx=-1, x=0, y=4294967309, Zero_fmod={3:0}] [L45] return (x * y) / (x * y); VAL [\old(x)=0, \old(y)=4294967309, hx=2146435072, lx=4294967306, ly=4294967302, one_fmod=1, sx=-1, x=0, y=4294967309, Zero_fmod={3:0}] [L187] RET, EXPR fmod_double(x, y) VAL [fmod_double(x, y)=4294967310, one_fmod=1, x=0, y=4294967309, Zero_fmod={3:0}] [L187] double res = fmod_double(x, y); VAL [fmod_double(x, y)=4294967310, one_fmod=1, res=4294967310, x=0, y=4294967309, Zero_fmod={3:0}] [L190] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [one_fmod=1, res=4294967310, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967309, Zero_fmod={3:0}] [L190] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) VAL [one_fmod=1, res=4294967310, res == 0.0 && __signbit_double(res) == 0=0, x=0, y=4294967309, Zero_fmod={3:0}] [L191] __VERIFIER_error() VAL [one_fmod=1, res=4294967310, x=0, y=4294967309, Zero_fmod={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 225 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 245 SDtfs, 45 SDslu, 184 SDs, 0 SdLazy, 266 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=221occurred 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, 120 NumberOfCodeBlocks, 120 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 3510 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...