/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_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 21:36:03,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 21:36:03,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 21:36:03,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 21:36:03,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 21:36:03,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 21:36:03,110 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 21:36:03,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 21:36:03,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 21:36:03,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 21:36:03,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 21:36:03,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 21:36:03,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 21:36:03,126 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 21:36:03,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 21:36:03,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 21:36:03,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 21:36:03,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 21:36:03,135 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 21:36:03,142 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 21:36:03,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 21:36:03,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 21:36:03,147 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 21:36:03,148 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 21:36:03,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 21:36:03,153 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 21:36:03,153 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 21:36:03,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 21:36:03,156 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 21:36:03,158 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 21:36:03,158 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 21:36:03,159 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 21:36:03,160 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 21:36:03,160 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 21:36:03,162 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 21:36:03,162 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 21:36:03,164 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 21:36:03,164 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 21:36:03,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 21:36:03,166 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 21:36:03,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 21:36:03,168 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 21:36:03,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 21:36:03,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 21:36:03,187 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 21:36:03,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 21:36:03,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 21:36:03,188 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 21:36:03,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 21:36:03,189 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 21:36:03,189 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 21:36:03,189 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 21:36:03,189 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 21:36:03,190 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 21:36:03,190 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 21:36:03,190 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 21:36:03,190 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 21:36:03,191 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 21:36:03,191 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 21:36:03,191 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 21:36:03,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 21:36:03,191 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 21:36:03,192 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 21:36:03,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 21:36:03,192 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 21:36:03,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 21:36:03,639 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 21:36:03,645 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 21:36:03,647 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 21:36:03,648 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 21:36:03,649 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-09-04 21:36:03,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/061278d0e/a4e514d7491942eba298885d4cab9573/FLAGbaffc4798 [2020-09-04 21:36:04,288 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 21:36:04,289 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/double_req_bl_1012a.c [2020-09-04 21:36:04,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/061278d0e/a4e514d7491942eba298885d4cab9573/FLAGbaffc4798 [2020-09-04 21:36:04,623 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/061278d0e/a4e514d7491942eba298885d4cab9573 [2020-09-04 21:36:04,635 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 21:36:04,637 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 21:36:04,638 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:04,638 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 21:36:04,642 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 21:36:04,643 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:04,646 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@216a6867 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04, skipping insertion in model container [2020-09-04 21:36:04,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:04,655 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 21:36:04,678 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 21:36:04,914 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:04,918 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 21:36:04,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 21:36:04,979 INFO L208 MainTranslator]: Completed translation [2020-09-04 21:36:04,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04 WrapperNode [2020-09-04 21:36:04,979 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 21:36:04,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 21:36:04,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 21:36:04,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 21:36:05,079 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:05,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:05,090 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:05,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:05,103 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:05,112 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:05,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (1/1) ... [2020-09-04 21:36:05,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 21:36:05,118 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 21:36:05,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 21:36:05,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 21:36:05,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (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 21:36:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 21:36:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 21:36:05,192 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-09-04 21:36:05,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-09-04 21:36:05,193 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_double [2020-09-04 21:36:05,193 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_double [2020-09-04 21:36:05,193 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 21:36:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 21:36:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-09-04 21:36:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-09-04 21:36:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 21:36:05,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 21:36:05,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 21:36:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 21:36:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_double [2020-09-04 21:36:05,196 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_double [2020-09-04 21:36:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 21:36:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 21:36:05,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 21:36:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 21:36:05,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 21:36:05,646 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 21:36:05,646 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-04 21:36:05,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:05 BoogieIcfgContainer [2020-09-04 21:36:05,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 21:36:05,656 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 21:36:05,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 21:36:05,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 21:36:05,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 09:36:04" (1/3) ... [2020-09-04 21:36:05,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50138d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:05, skipping insertion in model container [2020-09-04 21:36:05,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 09:36:04" (2/3) ... [2020-09-04 21:36:05,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50138d69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 09:36:05, skipping insertion in model container [2020-09-04 21:36:05,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 09:36:05" (3/3) ... [2020-09-04 21:36:05,667 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1012a.c [2020-09-04 21:36:05,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 21:36:05,688 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 21:36:05,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 21:36:05,730 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 21:36:05,730 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 21:36:05,731 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 21:36:05,731 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 21:36:05,731 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 21:36:05,731 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 21:36:05,731 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 21:36:05,731 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 21:36:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states. [2020-09-04 21:36:05,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 21:36:05,759 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:05,760 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] [2020-09-04 21:36:05,761 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:05,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:05,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1675366147, now seen corresponding path program 1 times [2020-09-04 21:36:05,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:05,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107289099] [2020-09-04 21:36:05,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:05,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:05,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 21:36:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:05,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 21:36:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:05,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-09-04 21:36:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 21:36:06,019 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 21:36:06,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107289099] [2020-09-04 21:36:06,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 21:36:06,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 21:36:06,024 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352268016] [2020-09-04 21:36:06,030 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 21:36:06,030 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 21:36:06,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 21:36:06,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 21:36:06,051 INFO L87 Difference]: Start difference. First operand 75 states. Second operand 4 states. [2020-09-04 21:36:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 21:36:06,304 INFO L93 Difference]: Finished difference Result 138 states and 151 transitions. [2020-09-04 21:36:06,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 21:36:06,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-09-04 21:36:06,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 21:36:06,318 INFO L225 Difference]: With dead ends: 138 [2020-09-04 21:36:06,318 INFO L226 Difference]: Without dead ends: 68 [2020-09-04 21:36:06,323 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 [2020-09-04 21:36:06,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-04 21:36:06,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-04 21:36:06,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-04 21:36:06,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 67 transitions. [2020-09-04 21:36:06,382 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 67 transitions. Word has length 33 [2020-09-04 21:36:06,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 21:36:06,383 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 67 transitions. [2020-09-04 21:36:06,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 21:36:06,383 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 67 transitions. [2020-09-04 21:36:06,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-04 21:36:06,385 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 21:36:06,386 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] [2020-09-04 21:36:06,386 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 21:36:06,387 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 21:36:06,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 21:36:06,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1980992917, now seen corresponding path program 1 times [2020-09-04 21:36:06,388 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 21:36:06,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [546728697] [2020-09-04 21:36:06,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 21:36:06,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:06,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 21:36:06,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 21:36:06,717 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 21:36:06,717 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 21:36:06,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 21:36:06,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 09:36:06 BoogieIcfgContainer [2020-09-04 21:36:06,766 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 21:36:06,770 INFO L168 Benchmark]: Toolchain (without parser) took 2132.41 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 102.8 MB in the beginning and 97.2 MB in the end (delta: 5.6 MB). Peak memory consumption was 69.5 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:06,772 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. [2020-09-04 21:36:06,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.15 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:06,774 INFO L168 Benchmark]: Boogie Preprocessor took 137.19 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 91.7 MB in the beginning and 180.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:06,775 INFO L168 Benchmark]: RCFGBuilder took 537.37 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 155.5 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:06,776 INFO L168 Benchmark]: TraceAbstraction took 1110.26 ms. Allocated memory is still 203.9 MB. Free memory was 155.5 MB in the beginning and 97.2 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. [2020-09-04 21:36:06,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 121.3 MB in the beginning and 120.9 MB in the end (delta: 419.6 kB). Peak memory consumption was 419.6 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.15 ms. Allocated memory is still 140.0 MB. Free memory was 102.3 MB in the beginning and 91.7 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 137.19 ms. Allocated memory was 140.0 MB in the beginning and 203.9 MB in the end (delta: 64.0 MB). Free memory was 91.7 MB in the beginning and 180.4 MB in the end (delta: -88.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 537.37 ms. Allocated memory is still 203.9 MB. Free memory was 180.4 MB in the beginning and 155.5 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1110.26 ms. Allocated memory is still 203.9 MB. Free memory was 155.5 MB in the beginning and 97.2 MB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 73]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseOr at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 68, overapproximation of bitwiseAnd at line 38. Possible FailurePath: [L68] double x = 1.0 / 0.0; [L69] CALL, EXPR fabs_double(x) VAL [\old(x)=8589934604] [L45] __uint32_t high; VAL [\old(x)=8589934604, x=8589934604] [L47] ieee_double_shape_type gh_u; VAL [\old(x)=8589934604, gh_u={3:0}, x=8589934604] [L48] gh_u.value = (x) VAL [\old(x)=8589934604, gh_u={3:0}, x=8589934604] [L49] EXPR gh_u.parts.msw VAL [\old(x)=8589934604, gh_u={3:0}, gh_u.parts.msw=8589934605, x=8589934604] [L49] (high) = gh_u.parts.msw VAL [(high) = gh_u.parts.msw=8589934593, \old(x)=8589934604, gh_u={3:0}, gh_u.parts.msw=8589934605, high=13, x=8589934604] [L52] ieee_double_shape_type sh_u; VAL [\old(x)=8589934604, high=13, sh_u={5:0}, x=8589934604] [L53] sh_u.value = (x) VAL [\old(x)=8589934604, high=13, sh_u={5:0}, x=8589934604] [L54] sh_u.parts.msw = (high & 0x7fffffff) VAL [\old(x)=8589934604, high=13, sh_u={5:0}, x=8589934604] [L55] EXPR sh_u.value VAL [\old(x)=8589934604, high=13, sh_u={5:0}, sh_u.value=8589934604, x=8589934604] [L55] (x) = sh_u.value VAL [(x) = sh_u.value=8589934603, (x) = sh_u.value=8589934594, \old(x)=8589934604, high=13, sh_u={5:0}, sh_u.value=8589934604, x=8589934604] [L57] return x; VAL [\old(x)=8589934604, \result=8589934604, high=13, x=8589934604] [L69] RET, EXPR fabs_double(x) VAL [fabs_double(x)=8589934604, x=8589934604] [L69] double res = fabs_double(x); VAL [fabs_double(x)=8589934604, res=8589934604, x=8589934604] [L72] CALL, EXPR isinf_double(res) VAL [\old(x)=8589934604] [L31] __int32_t hx, lx; VAL [\old(x)=8589934604, x=8589934604] [L33] ieee_double_shape_type ew_u; VAL [\old(x)=8589934604, ew_u={2:0}, x=8589934604] [L34] ew_u.value = (x) VAL [\old(x)=8589934604, ew_u={2:0}, x=8589934604] [L35] EXPR ew_u.parts.msw VAL [\old(x)=8589934604, ew_u={2:0}, ew_u.parts.msw=8589934590, x=8589934604] [L35] (hx) = ew_u.parts.msw VAL [\old(x)=8589934604, ew_u={2:0}, ew_u.parts.msw=8589934590, hx=-2, x=8589934604] [L36] EXPR ew_u.parts.lsw VAL [\old(x)=8589934604, ew_u={2:0}, ew_u.parts.lsw=4294967293, hx=-2, x=8589934604] [L36] (lx) = ew_u.parts.lsw VAL [(lx) = ew_u.parts.lsw=8589934596, \old(x)=8589934604, ew_u={2:0}, ew_u.parts.lsw=4294967293, hx=-2, lx=-3, x=8589934604] [L38] hx &= 0x7fffffff VAL [\old(x)=8589934604, lx=-3, x=8589934604] [L39] hx |= (__uint32_t)(lx | (-lx)) >> 31 VAL [\old(x)=8589934604, hx=6, lx=-3, x=8589934604] [L40] hx = 0x7ff00000 - hx VAL [\old(x)=8589934604, hx=2146435066, lx=-3, x=8589934604] [L41] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); VAL [\old(x)=8589934604, \result=0, hx=2146435066, lx=-3, x=8589934604] [L72] RET, EXPR isinf_double(res) VAL [isinf_double(res)=0, res=8589934604, x=8589934604] [L72] COND TRUE !isinf_double(res) VAL [isinf_double(res)=0, res=8589934604, x=8589934604] [L73] __VERIFIER_error() VAL [res=8589934604, x=8589934604] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 94 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 70 SDtfs, 13 SDslu, 45 SDs, 0 SdLazy, 83 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=75occurred 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, 100 NumberOfCodeBlocks, 100 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2080 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...