/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/float_req_bl_1012a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 21:50:11,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 21:50:11,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 21:50:11,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 21:50:11,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 21:50:11,840 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 21:50:11,841 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 21:50:11,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 21:50:11,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 21:50:11,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 21:50:11,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 21:50:11,848 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 21:50:11,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 21:50:11,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 21:50:11,851 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 21:50:11,852 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 21:50:11,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 21:50:11,864 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 21:50:11,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 21:50:11,869 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 21:50:11,869 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 21:50:11,891 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 21:50:11,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 21:50:11,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 21:50:11,897 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 21:50:11,897 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 21:50:11,897 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 21:50:11,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 21:50:11,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 21:50:11,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 21:50:11,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 21:50:11,898 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 21:50:11,898 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 21:50:11,898 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 21:50:11,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 21:50:11,899 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 21:50:11,900 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 21:50:11,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 21:50:11,900 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 21:50:11,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 21:50:11,900 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 21:50:11,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 21:50:11,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 21:50:11,901 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 21:50:12,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 21:50:12,170 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 21:50:12,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 21:50:12,175 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 21:50:12,175 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 21:50:12,176 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-08-22 21:50:12,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac736464/4d6ffeafd3fd4eb0b30245dfba978691/FLAG79ca59913 [2020-08-22 21:50:12,698 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 21:50:12,699 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1012a.c [2020-08-22 21:50:12,706 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac736464/4d6ffeafd3fd4eb0b30245dfba978691/FLAG79ca59913 [2020-08-22 21:50:13,122 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fac736464/4d6ffeafd3fd4eb0b30245dfba978691 [2020-08-22 21:50:13,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 21:50:13,132 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 21:50:13,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:13,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 21:50:13,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 21:50:13,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cab3797 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13, skipping insertion in model container [2020-08-22 21:50:13,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 21:50:13,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 21:50:13,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:13,348 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 21:50:13,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 21:50:13,391 INFO L208 MainTranslator]: Completed translation [2020-08-22 21:50:13,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13 WrapperNode [2020-08-22 21:50:13,391 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 21:50:13,392 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 21:50:13,392 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 21:50:13,392 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 21:50:13,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,492 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,493 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,502 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (1/1) ... [2020-08-22 21:50:13,511 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 21:50:13,512 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 21:50:13,512 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 21:50:13,512 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 21:50:13,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (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 21:50:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 21:50:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 21:50:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-08-22 21:50:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure isinf_float [2020-08-22 21:50:13,581 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 21:50:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 21:50:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-08-22 21:50:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 21:50:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 21:50:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 21:50:13,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 21:50:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 21:50:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 21:50:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure isinf_float [2020-08-22 21:50:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 21:50:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 21:50:13,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 21:50:13,878 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 21:50:13,879 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 21:50:13,884 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:13 BoogieIcfgContainer [2020-08-22 21:50:13,884 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 21:50:13,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 21:50:13,897 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 21:50:13,900 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 21:50:13,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 09:50:13" (1/3) ... [2020-08-22 21:50:13,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b153a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:13, skipping insertion in model container [2020-08-22 21:50:13,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 09:50:13" (2/3) ... [2020-08-22 21:50:13,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14b153a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 09:50:13, skipping insertion in model container [2020-08-22 21:50:13,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 09:50:13" (3/3) ... [2020-08-22 21:50:13,912 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1012a.c [2020-08-22 21:50:13,941 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 21:50:13,953 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 21:50:13,964 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 21:50:13,983 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 21:50:13,984 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 21:50:13,984 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 21:50:13,984 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 21:50:13,984 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 21:50:13,984 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 21:50:13,985 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 21:50:13,985 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 21:50:14,002 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-08-22 21:50:14,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 21:50:14,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:14,014 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] [2020-08-22 21:50:14,014 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:14,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:14,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1851120069, now seen corresponding path program 1 times [2020-08-22 21:50:14,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:14,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820606844] [2020-08-22 21:50:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:14,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:14,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 21:50:14,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:14,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-22 21:50:14,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:14,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-08-22 21:50:14,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 21:50:14,253 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 21:50:14,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820606844] [2020-08-22 21:50:14,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 21:50:14,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 21:50:14,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890025097] [2020-08-22 21:50:14,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 21:50:14,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 21:50:14,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 21:50:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 21:50:14,282 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 4 states. [2020-08-22 21:50:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 21:50:14,492 INFO L93 Difference]: Finished difference Result 118 states and 131 transitions. [2020-08-22 21:50:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 21:50:14,495 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-08-22 21:50:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 21:50:14,505 INFO L225 Difference]: With dead ends: 118 [2020-08-22 21:50:14,505 INFO L226 Difference]: Without dead ends: 58 [2020-08-22 21:50:14,510 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 21:50:14,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-08-22 21:50:14,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-08-22 21:50:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-08-22 21:50:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 57 transitions. [2020-08-22 21:50:14,559 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 57 transitions. Word has length 30 [2020-08-22 21:50:14,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 21:50:14,559 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 57 transitions. [2020-08-22 21:50:14,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 21:50:14,560 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 57 transitions. [2020-08-22 21:50:14,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-08-22 21:50:14,562 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 21:50:14,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 21:50:14,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 21:50:14,563 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 21:50:14,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 21:50:14,564 INFO L82 PathProgramCache]: Analyzing trace with hash 1434482942, now seen corresponding path program 1 times [2020-08-22 21:50:14,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 21:50:14,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [247411795] [2020-08-22 21:50:14,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 21:50:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:14,682 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:14,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 21:50:14,768 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 21:50:14,817 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 21:50:14,817 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 21:50:14,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 21:50:14,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 09:50:14 BoogieIcfgContainer [2020-08-22 21:50:14,857 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 21:50:14,860 INFO L168 Benchmark]: Toolchain (without parser) took 1726.33 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 103.6 MB in the beginning and 108.0 MB in the end (delta: -4.4 MB). Peak memory consumption was 59.1 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:14,861 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 21:50:14,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.94 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:14,863 INFO L168 Benchmark]: Boogie Preprocessor took 119.90 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 180.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:14,864 INFO L168 Benchmark]: RCFGBuilder took 372.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 159.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:14,865 INFO L168 Benchmark]: TraceAbstraction took 959.91 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 108.0 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. [2020-08-22 21:50:14,870 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.94 ms. Allocated memory is still 139.5 MB. Free memory was 103.4 MB in the beginning and 93.0 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.90 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 180.0 MB in the end (delta: -87.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 372.40 ms. Allocated memory is still 202.9 MB. Free memory was 180.0 MB in the beginning and 159.9 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 959.91 ms. Allocated memory is still 202.9 MB. Free memory was 159.2 MB in the beginning and 108.0 MB in the end (delta: 51.2 MB). Peak memory consumption was 51.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 51]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 46, overapproximation of bitwiseAnd at line 34. Possible FailurePath: [L46] float x = 1.0f / 0.0f; [L47] CALL, EXPR fabs_float(x) VAL [\old(x)=4294967304] [L12] __uint32_t ix; VAL [\old(x)=4294967304, x=4294967304] [L14] ieee_float_shape_type gf_u; VAL [\old(x)=4294967304, gf_u={3:0}, x=4294967304] [L15] gf_u.value = (x) VAL [\old(x)=4294967304, gf_u={3:0}, x=4294967304] [L16] EXPR gf_u.word VAL [\old(x)=4294967304, gf_u={3:0}, gf_u.word=4294967296, x=4294967304] [L16] (ix) = gf_u.word VAL [(ix) = gf_u.word=4294967302, \old(x)=4294967304, gf_u={3:0}, gf_u.word=4294967296, ix=0, x=4294967304] [L19] ieee_float_shape_type sf_u; VAL [\old(x)=4294967304, ix=0, sf_u={5:0}, x=4294967304] [L20] sf_u.word = (ix & 0x7fffffff) VAL [\old(x)=4294967304, ix=0, sf_u={5:0}, x=4294967304] [L21] EXPR sf_u.value VAL [\old(x)=4294967304, ix=0, sf_u={5:0}, sf_u.value=4294967305, x=4294967304] [L21] (x) = sf_u.value VAL [(x) = sf_u.value=4294967301, \old(x)=4294967304, ix=0, sf_u={5:0}, sf_u.value=4294967305, x=4294967305] [L23] return x; VAL [\old(x)=4294967304, \result=4294967305, ix=0, x=4294967305] [L47] RET, EXPR fabs_float(x) VAL [fabs_float(x)=4294967305, x=4294967304] [L47] float res = fabs_float(x); VAL [fabs_float(x)=4294967305, res=4294967305, x=4294967304] [L50] CALL, EXPR isinf_float(res) VAL [\old(x)=4294967305] [L28] __int32_t ix; VAL [\old(x)=4294967305, x=4294967305] [L30] ieee_float_shape_type gf_u; VAL [\old(x)=4294967305, gf_u={2:0}, x=4294967305] [L31] gf_u.value = (x) VAL [\old(x)=4294967305, gf_u={2:0}, x=4294967305] [L32] EXPR gf_u.word VAL [\old(x)=4294967305, gf_u={2:0}, gf_u.word=4294967295, x=4294967305] [L32] (ix) = gf_u.word VAL [(ix) = gf_u.word=4294967298, \old(x)=4294967305, gf_u={2:0}, gf_u.word=4294967295, ix=-1, x=4294967305] [L34] ix &= 0x7fffffff VAL [\old(x)=4294967305, x=4294967305] [L35] return ((ix) == 0x7f800000L); VAL [\old(x)=4294967305, \result=0, ix=0, x=4294967305] [L50] RET, EXPR isinf_float(res) VAL [isinf_float(res)=0, res=4294967305, x=4294967304] [L50] COND TRUE !isinf_float(res) VAL [isinf_float(res)=0, res=4294967305, x=4294967304] [L51] __VERIFIER_error() VAL [res=4294967305, x=4294967304] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 65 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 60 SDtfs, 11 SDslu, 40 SDs, 0 SdLazy, 70 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=65occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 87 NumberOfCodeBlocks, 87 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1798 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...