/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_1072a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:11:19,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:11:19,316 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:11:19,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:11:19,358 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:11:19,366 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:11:19,369 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:11:19,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:11:19,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:11:19,379 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:11:19,380 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:11:19,382 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:11:19,382 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:11:19,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:11:19,387 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:11:19,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:11:19,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:11:19,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:11:19,393 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:11:19,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:11:19,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:11:19,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:11:19,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:11:19,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:11:19,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 16:11:19,432 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:11:19,432 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:11:19,433 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:11:19,434 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 16:11:19,446 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:11:19,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:11:19,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:11:19,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:11:19,448 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:11:19,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:11:19,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:11:19,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:11:19,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:11:19,449 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:11:19,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:11:19,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:11:19,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:11:19,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:11:19,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:11:19,450 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:11:19,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:11:19,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:11:19,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:11:19,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:11:19,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:11:19,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:11:19,451 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:11:19,868 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:11:19,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:11:19,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:11:19,897 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:11:19,898 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:11:19,899 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2020-09-04 16:11:19,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584866192/b54efe3ce6bf40d6814c1d84c02b00ec/FLAG53d413ef6 [2020-09-04 16:11:20,495 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:11:20,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/float-newlib/float_req_bl_1072a.c [2020-09-04 16:11:20,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584866192/b54efe3ce6bf40d6814c1d84c02b00ec/FLAG53d413ef6 [2020-09-04 16:11:20,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/584866192/b54efe3ce6bf40d6814c1d84c02b00ec [2020-09-04 16:11:20,838 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:11:20,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:11:20,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:20,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:11:20,846 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:11:20,847 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:20" (1/1) ... [2020-09-04 16:11:20,851 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:20, skipping insertion in model container [2020-09-04 16:11:20,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:11:20" (1/1) ... [2020-09-04 16:11:20,861 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:11:20,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:11:21,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:21,114 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:11:21,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:11:21,174 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:11:21,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21 WrapperNode [2020-09-04 16:11:21,175 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:11:21,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:11:21,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:11:21,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:11:21,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (1/1) ... [2020-09-04 16:11:21,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (1/1) ... [2020-09-04 16:11:21,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (1/1) ... [2020-09-04 16:11:21,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (1/1) ... [2020-09-04 16:11:21,300 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (1/1) ... [2020-09-04 16:11:21,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (1/1) ... [2020-09-04 16:11:21,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (1/1) ... [2020-09-04 16:11:21,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:11:21,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:11:21,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:11:21,315 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:11:21,316 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (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 16:11:21,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:11:21,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:11:21,381 INFO L138 BoogieDeclarations]: Found implementation of procedure trunc_float [2020-09-04 16:11:21,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-09-04 16:11:21,382 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:11:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:11:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure trunc_float [2020-09-04 16:11:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:11:21,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-09-04 16:11:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:11:21,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:11:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:11:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-09-04 16:11:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-09-04 16:11:21,384 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:11:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:11:21,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:11:21,771 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:11:21,772 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-09-04 16:11:21,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:21 BoogieIcfgContainer [2020-09-04 16:11:21,778 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:11:21,780 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:11:21,780 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:11:21,785 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:11:21,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:11:20" (1/3) ... [2020-09-04 16:11:21,786 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223330c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:21, skipping insertion in model container [2020-09-04 16:11:21,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:11:21" (2/3) ... [2020-09-04 16:11:21,787 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@223330c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:11:21, skipping insertion in model container [2020-09-04 16:11:21,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:11:21" (3/3) ... [2020-09-04 16:11:21,789 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072a.c [2020-09-04 16:11:21,801 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:11:21,811 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:11:21,833 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:11:21,857 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:11:21,858 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:11:21,858 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:11:21,858 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:11:21,859 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:11:21,859 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:11:21,859 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:11:21,859 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:11:21,880 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-09-04 16:11:21,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 16:11:21,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:21,896 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] [2020-09-04 16:11:21,896 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:21,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:21,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1694901136, now seen corresponding path program 1 times [2020-09-04 16:11:21,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:21,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763818463] [2020-09-04 16:11:21,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:21,979 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:22,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:11:22,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:22,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-04 16:11:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:22,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-04 16:11:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:11:22,191 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 16:11:22,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763818463] [2020-09-04 16:11:22,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:11:22,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 16:11:22,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438247430] [2020-09-04 16:11:22,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 16:11:22,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:11:22,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 16:11:22,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 16:11:22,225 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 4 states. [2020-09-04 16:11:22,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:11:22,533 INFO L93 Difference]: Finished difference Result 152 states and 175 transitions. [2020-09-04 16:11:22,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 16:11:22,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-09-04 16:11:22,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:11:22,547 INFO L225 Difference]: With dead ends: 152 [2020-09-04 16:11:22,548 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 16:11:22,553 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 16:11:22,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 16:11:22,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-04 16:11:22,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 16:11:22,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 78 transitions. [2020-09-04 16:11:22,613 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 78 transitions. Word has length 35 [2020-09-04 16:11:22,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:11:22,614 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 78 transitions. [2020-09-04 16:11:22,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 16:11:22,614 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 78 transitions. [2020-09-04 16:11:22,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-04 16:11:22,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:11:22,617 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] [2020-09-04 16:11:22,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:11:22,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:11:22,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:11:22,618 INFO L82 PathProgramCache]: Analyzing trace with hash -331067037, now seen corresponding path program 1 times [2020-09-04 16:11:22,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:11:22,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135437427] [2020-09-04 16:11:22,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:11:22,622 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:11:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:22,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:22,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:11:22,812 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:11:22,873 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:11:22,873 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:11:22,874 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:11:22,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:11:22 BoogieIcfgContainer [2020-09-04 16:11:22,899 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:11:22,903 INFO L168 Benchmark]: Toolchain (without parser) took 2060.97 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 104.0 MB in the beginning and 101.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 66.9 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:22,904 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:11:22,905 INFO L168 Benchmark]: CACSL2BoogieTranslator took 333.44 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 92.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:22,906 INFO L168 Benchmark]: Boogie Preprocessor took 138.48 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 181.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:22,907 INFO L168 Benchmark]: RCFGBuilder took 464.11 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 158.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:22,907 INFO L168 Benchmark]: TraceAbstraction took 1118.93 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 101.0 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:11:22,911 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 333.44 ms. Allocated memory is still 140.5 MB. Free memory was 103.7 MB in the beginning and 92.6 MB in the end (delta: 11.2 MB). Peak memory consumption was 11.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 138.48 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 92.6 MB in the beginning and 181.8 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 464.11 ms. Allocated memory is still 204.5 MB. Free memory was 181.8 MB in the beginning and 158.5 MB in the end (delta: 23.3 MB). Peak memory consumption was 23.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1118.93 ms. Allocated memory is still 204.5 MB. Free memory was 157.8 MB in the beginning and 101.0 MB in the end (delta: 56.8 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 67]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 62, overapproximation of bitwiseAnd at line 51. Possible FailurePath: [L62] float x = 1.0f / 0.0f; [L63] CALL, EXPR trunc_float(x) [L13] __int32_t signbit, w, exponent_less_127; [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (w) = gf_u.word [L19] signbit = w & 0x80000000 [L20] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L21] COND FALSE !(exponent_less_127 < 23) [L37] COND FALSE !(exponent_less_127 == 255) [L40] return x; [L63] RET, EXPR trunc_float(x) [L63] float res = trunc_float(x); [L66] CALL, EXPR isinf_float(res) [L45] __int32_t ix; [L47] ieee_float_shape_type gf_u; [L48] gf_u.value = (x) [L49] EXPR gf_u.word [L49] (ix) = gf_u.word [L51] ix &= 0x7fffffff [L52] return ((ix) == 0x7f800000L); [L66] RET, EXPR isinf_float(res) [L66] COND TRUE !isinf_float(res) [L67] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 15 SDslu, 54 SDs, 0 SdLazy, 94 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=83occurred 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...