/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_0730c.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 18:31:57,838 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 18:31:57,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 18:31:57,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 18:31:57,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 18:31:57,901 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 18:31:57,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 18:31:57,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 18:31:57,906 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 18:31:57,907 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 18:31:57,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 18:31:57,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 18:31:57,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 18:31:57,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 18:31:57,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 18:31:57,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 18:31:57,932 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 18:31:57,943 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 18:31:57,959 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 18:31:57,959 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 18:31:57,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 18:31:57,961 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 18:31:57,962 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 18:31:57,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 18:31:57,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 18:31:57,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 18:31:57,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 18:31:57,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 18:31:57,964 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 18:31:57,964 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 18:31:57,964 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 18:31:57,964 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 18:31:57,965 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 18:31:57,965 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 18:31:57,965 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 18:31:57,965 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 18:31:57,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 18:31:57,967 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 18:31:57,968 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 18:31:57,969 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 18:31:57,969 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 18:31:58,234 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 18:31:58,254 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 18:31:58,259 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 18:31:58,261 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 18:31:58,264 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 18:31:58,264 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_0730c.c [2020-08-22 18:31:58,337 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/765d789e6/758b4b73a1e3401ba843820083cb3900/FLAGce6ce8f23 [2020-08-22 18:31:58,741 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 18:31:58,742 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_0730c.c [2020-08-22 18:31:58,750 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/765d789e6/758b4b73a1e3401ba843820083cb3900/FLAGce6ce8f23 [2020-08-22 18:31:59,081 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/765d789e6/758b4b73a1e3401ba843820083cb3900 [2020-08-22 18:31:59,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 18:31:59,091 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 18:31:59,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:59,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 18:31:59,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 18:31:59,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,099 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f0b9b62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59, skipping insertion in model container [2020-08-22 18:31:59,099 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 18:31:59,127 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 18:31:59,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:59,389 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 18:31:59,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 18:31:59,566 INFO L208 MainTranslator]: Completed translation [2020-08-22 18:31:59,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59 WrapperNode [2020-08-22 18:31:59,567 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 18:31:59,568 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 18:31:59,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 18:31:59,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 18:31:59,579 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,589 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,609 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (1/1) ... [2020-08-22 18:31:59,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 18:31:59,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 18:31:59,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 18:31:59,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 18:31:59,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (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 18:31:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 18:31:59,678 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 18:31:59,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __ieee754_sqrtf [2020-08-22 18:31:59,679 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 18:31:59,679 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 18:31:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 18:31:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-08-22 18:31:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure __ieee754_sqrtf [2020-08-22 18:31:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 18:31:59,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 18:31:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 18:31:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 18:31:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 18:31:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 18:31:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 18:31:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 18:31:59,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 18:31:59,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 18:32:00,083 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 18:32:00,083 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 18:32:00,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:00 BoogieIcfgContainer [2020-08-22 18:32:00,089 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 18:32:00,091 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 18:32:00,091 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 18:32:00,094 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 18:32:00,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:31:59" (1/3) ... [2020-08-22 18:32:00,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f14346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:00, skipping insertion in model container [2020-08-22 18:32:00,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:31:59" (2/3) ... [2020-08-22 18:32:00,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79f14346 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:32:00, skipping insertion in model container [2020-08-22 18:32:00,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:32:00" (3/3) ... [2020-08-22 18:32:00,098 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_0730c.c [2020-08-22 18:32:00,106 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 18:32:00,112 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 18:32:00,124 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 18:32:00,142 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 18:32:00,143 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 18:32:00,143 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 18:32:00,143 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 18:32:00,143 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 18:32:00,143 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 18:32:00,144 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 18:32:00,144 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 18:32:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states. [2020-08-22 18:32:00,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 18:32:00,174 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:00,175 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] [2020-08-22 18:32:00,176 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:00,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:00,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1619390018, now seen corresponding path program 1 times [2020-08-22 18:32:00,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:00,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194097492] [2020-08-22 18:32:00,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:00,259 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:00,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:00,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 18:32:00,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 18:32:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 18:32:00,457 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 18:32:00,460 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194097492] [2020-08-22 18:32:00,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 18:32:00,462 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 18:32:00,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630182527] [2020-08-22 18:32:00,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 18:32:00,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 18:32:00,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 18:32:00,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 18:32:00,485 INFO L87 Difference]: Start difference. First operand 121 states. Second operand 4 states. [2020-08-22 18:32:00,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 18:32:00,866 INFO L93 Difference]: Finished difference Result 220 states and 261 transitions. [2020-08-22 18:32:00,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 18:32:00,868 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-08-22 18:32:00,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 18:32:00,881 INFO L225 Difference]: With dead ends: 220 [2020-08-22 18:32:00,881 INFO L226 Difference]: Without dead ends: 113 [2020-08-22 18:32:00,886 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 18:32:00,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-08-22 18:32:00,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-08-22 18:32:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-08-22 18:32:00,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-08-22 18:32:00,956 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 35 [2020-08-22 18:32:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 18:32:00,956 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-08-22 18:32:00,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 18:32:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-08-22 18:32:00,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-08-22 18:32:00,959 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 18:32:00,959 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] [2020-08-22 18:32:00,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 18:32:00,960 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 18:32:00,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 18:32:00,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1569420762, now seen corresponding path program 1 times [2020-08-22 18:32:00,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 18:32:00,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [102935336] [2020-08-22 18:32:00,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 18:32:00,964 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 18:32:01,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:01,028 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:01,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 18:32:01,068 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 18:32:01,100 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 18:32:01,100 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 18:32:01,101 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 18:32:01,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:32:01 BoogieIcfgContainer [2020-08-22 18:32:01,118 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 18:32:01,120 INFO L168 Benchmark]: Toolchain (without parser) took 2029.30 ms. Allocated memory was 147.3 MB in the beginning and 233.8 MB in the end (delta: 86.5 MB). Free memory was 104.4 MB in the beginning and 195.0 MB in the end (delta: -90.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:32:01,121 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 147.3 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 18:32:01,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 476.15 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 104.2 MB in the beginning and 182.2 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:01,123 INFO L168 Benchmark]: Boogie Preprocessor took 44.17 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 179.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:01,124 INFO L168 Benchmark]: RCFGBuilder took 476.77 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 151.1 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. [2020-08-22 18:32:01,125 INFO L168 Benchmark]: TraceAbstraction took 1027.08 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 150.5 MB in the beginning and 195.0 MB in the end (delta: -44.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 18:32:01,129 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 147.3 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 476.15 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 104.2 MB in the beginning and 182.2 MB in the end (delta: -78.1 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.17 ms. Allocated memory is still 203.9 MB. Free memory was 182.2 MB in the beginning and 179.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 476.77 ms. Allocated memory is still 203.9 MB. Free memory was 179.9 MB in the beginning and 151.1 MB in the end (delta: 28.8 MB). Peak memory consumption was 28.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1027.08 ms. Allocated memory was 203.9 MB in the beginning and 233.8 MB in the end (delta: 29.9 MB). Free memory was 150.5 MB in the beginning and 195.0 MB in the end (delta: -44.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 106]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 105, overapproximation of bitwiseAnd at line 24, overapproximation of someUnaryFLOAToperation at line 101, overapproximation of someBinaryArithmeticFLOAToperation at line 27. Possible FailurePath: [L12] static const float one_sqrt = 1.0, tiny_sqrt = 1.0e-30; [L101] float x = -0.0f; [L102] CALL, EXPR __ieee754_sqrtf(x) [L15] float z; [L16] __uint32_t r, hx; [L17] __int32_t ix, s, q, m, t, i; [L20] ieee_float_shape_type gf_u; [L21] gf_u.value = (x) [L22] EXPR gf_u.word [L22] (ix) = gf_u.word [L24] hx = ix & 0x7fffffff [L26] COND TRUE !((hx) < 0x7f800000L) [L27] return x * x + x; [L102] RET, EXPR __ieee754_sqrtf(x) [L102] float res = __ieee754_sqrtf(x); [L105] EXPR res == -0.0f && __signbit_float(res) == 1 [L105] COND TRUE !(res == -0.0f && __signbit_float(res) == 1) [L106] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 121 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 27 SDslu, 98 SDs, 0 SdLazy, 132 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s 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=121occurred 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...