/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:32:31,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:32:31,185 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:32:31,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:32:31,294 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 18:32:31,303 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:32:31,304 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:32:31,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:32:31,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:32:31,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:32:31,306 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:32:31,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:32:31,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:32:31,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:32:31,307 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:32:31,307 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:32:31,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:32:31,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:32:31,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:32:31,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:32:31,308 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:32:31,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:32:31,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:32:31,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:32:31,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:32:31,309 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:32:31,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:32:31,309 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:32:31,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:32:31,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:32:31,620 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:32:31,621 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:32:31,622 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:32:31,622 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-08-22 18:32:31,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6e16bd2/bd5757ad5ff642a5966657c04a6aa005/FLAGea9fa4328 [2020-08-22 18:32:32,180 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:32:32,181 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1092c.c [2020-08-22 18:32:32,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6e16bd2/bd5757ad5ff642a5966657c04a6aa005/FLAGea9fa4328 [2020-08-22 18:32:32,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd6e16bd2/bd5757ad5ff642a5966657c04a6aa005 [2020-08-22 18:32:32,564 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:32:32,566 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:32:32,567 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:32,567 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:32:32,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:32:32,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,576 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88af870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32, skipping insertion in model container [2020-08-22 18:32:32,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:32:32,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:32:32,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:32,803 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:32:32,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:32:32,952 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:32:32,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32 WrapperNode [2020-08-22 18:32:32,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:32:32,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:32:32,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:32:32,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:32:32,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,972 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,983 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (1/1) ... [2020-08-22 18:32:32,994 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:32:32,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:32:32,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:32:32,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:32:32,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (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 18:32:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:32:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:32:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ceil_float [2020-08-22 18:32:33,061 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-22 18:32:33,062 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:32:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:32:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure ceil_float [2020-08-22 18:32:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:32:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:32:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:32:33,062 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:32:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:32:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:32:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-22 18:32:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:32:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:32:33,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:32:33,463 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:32:33,464 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 18:32:33,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:33 BoogieIcfgContainer [2020-08-22 18:32:33,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:32:33,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:32:33,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:32:33,473 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:32:33,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:32:32" (1/3) ... [2020-08-22 18:32:33,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b47d06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:33, skipping insertion in model container [2020-08-22 18:32:33,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:32:32" (2/3) ... [2020-08-22 18:32:33,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b47d06a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:33, skipping insertion in model container [2020-08-22 18:32:33,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:33" (3/3) ... [2020-08-22 18:32:33,476 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1092c.c [2020-08-22 18:32:33,487 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:32:33,494 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:32:33,508 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:32:33,525 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:32:33,525 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:32:33,525 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:32:33,526 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:32:33,526 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:32:33,526 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:32:33,526 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:32:33,526 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:32:33,541 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-08-22 18:32:33,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 18:32:33,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:33,553 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] [2020-08-22 18:32:33,553 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:33,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:33,558 INFO L82 PathProgramCache]: Analyzing trace with hash -111453840, now seen corresponding path program 1 times [2020-08-22 18:32:33,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:33,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523124647] [2020-08-22 18:32:33,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:33,618 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:33,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:33,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:32:33,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:33,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 18:32:33,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:33,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 18:32:33,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:33,849 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 18:32:33,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523124647] [2020-08-22 18:32:33,854 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:32:33,854 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:32:33,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135297626] [2020-08-22 18:32:33,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:32:33,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:32:33,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:32:33,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:32:33,882 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 4 states. [2020-08-22 18:32:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:32:34,146 INFO L93 Difference]: Finished difference Result 160 states and 191 transitions. [2020-08-22 18:32:34,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:32:34,148 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-08-22 18:32:34,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:32:34,161 INFO L225 Difference]: With dead ends: 160 [2020-08-22 18:32:34,162 INFO L226 Difference]: Without dead ends: 81 [2020-08-22 18:32:34,166 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 [2020-08-22 18:32:34,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-08-22 18:32:34,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-08-22 18:32:34,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-08-22 18:32:34,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 89 transitions. [2020-08-22 18:32:34,223 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 89 transitions. Word has length 37 [2020-08-22 18:32:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:32:34,224 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 89 transitions. [2020-08-22 18:32:34,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:32:34,225 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 89 transitions. [2020-08-22 18:32:34,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 18:32:34,227 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:34,227 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] [2020-08-22 18:32:34,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:32:34,228 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:34,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:34,229 INFO L82 PathProgramCache]: Analyzing trace with hash 1808692589, now seen corresponding path program 1 times [2020-08-22 18:32:34,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:34,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818772798] [2020-08-22 18:32:34,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:34,232 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:34,347 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:34,452 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:34,485 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:32:34,486 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:32:34,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:32:34,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:32:34 BoogieIcfgContainer [2020-08-22 18:32:34,520 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:32:34,523 INFO L168 Benchmark]: Toolchain (without parser) took 1956.25 ms. Allocated memory was 140.5 MB in the beginning and 233.8 MB in the end (delta: 93.3 MB). Free memory was 104.8 MB in the beginning and 203.4 MB in the end (delta: -98.7 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,524 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 386.08 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 104.6 MB in the beginning and 182.0 MB in the end (delta: -77.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,526 INFO L168 Benchmark]: Boogie Preprocessor took 41.38 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,527 INFO L168 Benchmark]: RCFGBuilder took 473.47 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 155.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,528 INFO L168 Benchmark]: TraceAbstraction took 1050.43 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 155.5 MB in the beginning and 203.4 MB in the end (delta: -48.0 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:34,532 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 140.5 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 386.08 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 104.6 MB in the beginning and 182.0 MB in the end (delta: -77.4 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.38 ms. Allocated memory is still 203.9 MB. Free memory was 182.0 MB in the beginning and 180.0 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 473.47 ms. Allocated memory is still 203.9 MB. Free memory was 180.0 MB in the beginning and 155.5 MB in the end (delta: 24.6 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1050.43 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 155.5 MB in the beginning and 203.4 MB in the end (delta: -48.0 MB). Peak memory consumption was 69.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 81]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 44, overapproximation of bitwiseAnd at line 64. Possible FailurePath: [L11] static const float huge_ceil = 1.0e30; [L76] float x = 1.0f / 0.0f; [L77] CALL, EXPR ceil_float(x) [L14] __int32_t i0, j0; [L15] __uint32_t i, ix; [L17] ieee_float_shape_type gf_u; [L18] gf_u.value = (x) [L19] EXPR gf_u.word [L19] (i0) = gf_u.word [L21] ix = (i0 & 0x7fffffff) [L22] j0 = (ix >> 23) - 0x7f [L23] COND FALSE !(j0 < 23) [L43] COND TRUE !((ix) < 0x7f800000L) [L44] return x + x; [L77] RET, EXPR ceil_float(x) [L77] float res = ceil_float(x); [L80] CALL, EXPR isinf_float(res) [L58] __int32_t ix; [L60] ieee_float_shape_type gf_u; [L61] gf_u.value = (x) [L62] EXPR gf_u.word [L62] (ix) = gf_u.word [L64] ix &= 0x7fffffff [L65] return ((ix) == 0x7f800000L); [L80] RET, EXPR isinf_float(res) [L80] COND TRUE !isinf_float(res) [L81] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 88 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: 92 SDtfs, 17 SDslu, 68 SDs, 0 SdLazy, 100 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=88occurred 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: No data available, 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...