/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_1032a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:49:07,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:49:07,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:49:07,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 21:49:07,593 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 21:49:07,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 21:49:07,606 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 21:49:07,610 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 21:49:07,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 21:49:07,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 21:49:07,617 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 21:49:07,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 21:49:07,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:49:07,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:49:07,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:49:07,621 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:49:07,622 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:49:07,623 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:49:07,624 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:49:07,626 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:49:07,628 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:49:07,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:49:07,630 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:49:07,630 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:49:07,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:49:07,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:49:07,641 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:49:07,642 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:49:07,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 21:49:07,653 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:49:07,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:49:07,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:49:07,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:49:07,654 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:49:07,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:49:07,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:49:07,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:49:07,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:49:07,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:49:07,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:49:07,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:49:07,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:49:07,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:49:07,657 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:49:07,657 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:49:07,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:49:07,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:49:07,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:49:07,658 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:49:07,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:49:07,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:49:07,658 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 [2020-08-22 21:49:07,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:49:07,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:49:07,993 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:49:07,995 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:49:07,995 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:49:07,996 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-08-22 21:49:08,056 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2be9e4fa/de40e3d2fcb44df09f985b67b332472b/FLAGafa3e60da [2020-08-22 21:49:08,526 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:49:08,527 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/double_req_bl_1032a.c [2020-08-22 21:49:08,535 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2be9e4fa/de40e3d2fcb44df09f985b67b332472b/FLAGafa3e60da [2020-08-22 21:49:08,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2be9e4fa/de40e3d2fcb44df09f985b67b332472b [2020-08-22 21:49:08,901 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:49:08,902 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:49:08,903 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:08,904 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:49:08,908 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:49:08,909 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:08" (1/1) ... [2020-08-22 21:49:08,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e390142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:08, skipping insertion in model container [2020-08-22 21:49:08,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:49:08" (1/1) ... [2020-08-22 21:49:08,922 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:49:08,945 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:49:09,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:09,148 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:49:09,181 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:49:09,204 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:49:09,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09 WrapperNode [2020-08-22 21:49:09,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:49:09,206 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:49:09,206 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:49:09,206 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:49:09,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (1/1) ... [2020-08-22 21:49:09,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (1/1) ... [2020-08-22 21:49:09,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (1/1) ... [2020-08-22 21:49:09,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (1/1) ... [2020-08-22 21:49:09,328 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (1/1) ... [2020-08-22 21:49:09,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (1/1) ... [2020-08-22 21:49:09,344 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (1/1) ... [2020-08-22 21:49:09,349 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:49:09,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:49:09,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:49:09,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:49:09,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (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 [2020-08-22 21:49:09,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:49:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:49:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure isnan_double [2020-08-22 21:49:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure round_double [2020-08-22 21:49:09,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_double [2020-08-22 21:49:09,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:49:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:49:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure isnan_double [2020-08-22 21:49:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure round_double [2020-08-22 21:49:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:49:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:49:09,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:49:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:49:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:49:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:49:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_double [2020-08-22 21:49:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:49:09,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:49:09,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:49:09,824 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:49:09,824 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 21:49:09,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:09 BoogieIcfgContainer [2020-08-22 21:49:09,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:49:09,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:49:09,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:49:09,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:49:09,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:49:08" (1/3) ... [2020-08-22 21:49:09,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5fe3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:09, skipping insertion in model container [2020-08-22 21:49:09,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:49:09" (2/3) ... [2020-08-22 21:49:09,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5fe3cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:49:09, skipping insertion in model container [2020-08-22 21:49:09,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:49:09" (3/3) ... [2020-08-22 21:49:09,838 INFO L109 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032a.c [2020-08-22 21:49:09,848 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:49:09,856 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:49:09,868 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:49:09,888 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:49:09,889 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:49:09,889 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:49:09,889 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:49:09,889 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:49:09,889 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:49:09,889 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:49:09,890 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:49:09,909 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states. [2020-08-22 21:49:09,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 21:49:09,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:09,922 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] [2020-08-22 21:49:09,922 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:09,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:09,929 INFO L82 PathProgramCache]: Analyzing trace with hash -2016969319, now seen corresponding path program 1 times [2020-08-22 21:49:09,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:09,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2101431226] [2020-08-22 21:49:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:10,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:10,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:49:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:49:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:49:10,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 21:49:10,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2101431226] [2020-08-22 21:49:10,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:49:10,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:49:10,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387124301] [2020-08-22 21:49:10,194 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:49:10,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:49:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:49:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:49:10,212 INFO L87 Difference]: Start difference. First operand 104 states. Second operand 4 states. [2020-08-22 21:49:10,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:49:10,520 INFO L93 Difference]: Finished difference Result 194 states and 225 transitions. [2020-08-22 21:49:10,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:49:10,522 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-08-22 21:49:10,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:49:10,534 INFO L225 Difference]: With dead ends: 194 [2020-08-22 21:49:10,535 INFO L226 Difference]: Without dead ends: 96 [2020-08-22 21:49:10,540 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 [2020-08-22 21:49:10,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-08-22 21:49:10,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-08-22 21:49:10,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-08-22 21:49:10,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-08-22 21:49:10,590 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 29 [2020-08-22 21:49:10,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:49:10,591 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-08-22 21:49:10,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:49:10,591 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-08-22 21:49:10,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-08-22 21:49:10,593 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:49:10,594 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] [2020-08-22 21:49:10,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:49:10,594 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:49:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:49:10,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1112139357, now seen corresponding path program 1 times [2020-08-22 21:49:10,595 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:49:10,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574483464] [2020-08-22 21:49:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:49:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:10,650 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:49:10,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:49:10,775 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:49:10,776 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:49:10,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:49:10,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:49:10 BoogieIcfgContainer [2020-08-22 21:49:10,816 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:49:10,819 INFO L168 Benchmark]: Toolchain (without parser) took 1915.72 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 93.1 MB in the end (delta: 10.4 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:10,825 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-22 21:49:10,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.5 MB in the beginning and 91.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:10,827 INFO L168 Benchmark]: Boogie Preprocessor took 144.19 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.7 MB in the beginning and 179.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:10,829 INFO L168 Benchmark]: RCFGBuilder took 480.07 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 153.0 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:10,829 INFO L168 Benchmark]: TraceAbstraction took 984.81 ms. Allocated memory is still 203.4 MB. Free memory was 152.1 MB in the beginning and 93.1 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. [2020-08-22 21:49:10,836 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 122.5 MB in the beginning and 122.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.78 ms. Allocated memory is still 140.0 MB. Free memory was 103.5 MB in the beginning and 91.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.19 ms. Allocated memory was 140.0 MB in the beginning and 203.4 MB in the end (delta: 63.4 MB). Free memory was 91.7 MB in the beginning and 179.7 MB in the end (delta: -88.0 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 480.07 ms. Allocated memory is still 203.4 MB. Free memory was 179.7 MB in the beginning and 153.0 MB in the end (delta: 26.6 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 984.81 ms. Allocated memory is still 203.4 MB. Free memory was 152.1 MB in the beginning and 93.1 MB in the end (delta: 59.0 MB). Peak memory consumption was 59.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 91]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 90, overapproximation of bitwiseAnd at line 26, overapproximation of someBinaryArithmeticDOUBLEoperation at line 43. Possible FailurePath: [L86] double x = 0.0; VAL [x=0] [L87] CALL, EXPR round_double(x) VAL [\old(x)=0] [L18] __int32_t msw, exponent_less_1023; VAL [\old(x)=0, x=0] [L19] __uint32_t lsw; VAL [\old(x)=0, x=0] [L21] ieee_double_shape_type ew_u; VAL [\old(x)=0, ew_u={2:0}, x=0] [L22] ew_u.value = (x) VAL [\old(x)=0, ew_u={2:0}, x=0] [L23] EXPR ew_u.parts.msw VAL [\old(x)=0, ew_u={2:0}, ew_u.parts.msw=4294967295, x=0] [L23] (msw) = ew_u.parts.msw VAL [\old(x)=0, ew_u={2:0}, ew_u.parts.msw=4294967295, msw=-1, x=0] [L24] EXPR ew_u.parts.lsw VAL [\old(x)=0, ew_u={2:0}, ew_u.parts.lsw=4294967303, msw=-1, x=0] [L24] (lsw) = ew_u.parts.lsw VAL [\old(x)=0, ew_u={2:0}, ew_u.parts.lsw=4294967303, lsw=7, msw=-1, x=0] [L26] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 VAL [\old(x)=0, exponent_less_1023=1024, lsw=7, msw=-1, x=0] [L27] COND FALSE !(exponent_less_1023 < 20) VAL [\old(x)=0, exponent_less_1023=1024, lsw=7, msw=-1, x=0] [L41] COND TRUE exponent_less_1023 > 51 VAL [\old(x)=0, exponent_less_1023=1024, lsw=7, msw=-1, x=0] [L42] COND TRUE exponent_less_1023 == 1024 VAL [\old(x)=0, exponent_less_1023=1024, lsw=7, msw=-1, x=0] [L43] return x + x; VAL [\old(x)=0, exponent_less_1023=1024, lsw=7, msw=-1, x=0] [L87] RET, EXPR round_double(x) VAL [round_double(x)=4294967299, x=0] [L87] double res = round_double(x); VAL [res=4294967299, round_double(x)=4294967299, x=0] [L90] EXPR res == 0.0 && __signbit_double(res) == 0 VAL [res=4294967299, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L90] COND TRUE !(res == 0.0 && __signbit_double(res) == 0) VAL [res=4294967299, res == 0.0 && __signbit_double(res) == 0=0, x=0] [L91] __VERIFIER_error() VAL [res=4294967299, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 108 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 15 SDslu, 82 SDs, 0 SdLazy, 120 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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=104occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 72 NumberOfCodeBlocks, 72 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 1372 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...