/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-newlib/float_req_bl_1011a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 11:43:34,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 11:43:34,206 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 11:43:34,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 11:43:34,223 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 11:43:34,225 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 11:43:34,227 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 11:43:34,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 11:43:34,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 11:43:34,239 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 11:43:34,240 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 11:43:34,242 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 11:43:34,242 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 11:43:34,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 11:43:34,246 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 11:43:34,248 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 11:43:34,250 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 11:43:34,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 11:43:34,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 11:43:34,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 11:43:34,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 11:43:34,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 11:43:34,267 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 11:43:34,268 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 11:43:34,270 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 11:43:34,282 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 11:43:34,283 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 11:43:34,284 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 11:43:34,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 11:43:34,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 11:43:34,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 11:43:34,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 11:43:34,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 11:43:34,325 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 11:43:34,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 11:43:34,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 11:43:34,328 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 11:43:34,328 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 11:43:34,328 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 11:43:34,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 11:43:34,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 11:43:34,329 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 11:43:34,329 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 11:43:34,329 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 11:43:34,329 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 11:43:34,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 11:43:34,330 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 11:43:34,330 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 11:43:34,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 11:43:34,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 11:43:34,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 11:43:34,331 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 11:43:34,331 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 11:43:34,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 11:43:34,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 11:43:34,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 11:43:34,332 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 11:43:34,332 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 11:43:34,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 11:43:34,623 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 11:43:34,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 11:43:34,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 11:43:34,640 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 11:43:34,641 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 11:43:34,642 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1011a.c [2020-07-17 11:43:34,717 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff622e16c/732728cac8064e009d8fddaf56f58010/FLAGf0d157962 [2020-07-17 11:43:35,154 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 11:43:35,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1011a.c [2020-07-17 11:43:35,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff622e16c/732728cac8064e009d8fddaf56f58010/FLAGf0d157962 [2020-07-17 11:43:35,504 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff622e16c/732728cac8064e009d8fddaf56f58010 [2020-07-17 11:43:35,513 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 11:43:35,516 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 11:43:35,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:35,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 11:43:35,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 11:43:35,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@523bd800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35, skipping insertion in model container [2020-07-17 11:43:35,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,532 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 11:43:35,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 11:43:35,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:35,748 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 11:43:35,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 11:43:35,787 INFO L208 MainTranslator]: Completed translation [2020-07-17 11:43:35,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35 WrapperNode [2020-07-17 11:43:35,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 11:43:35,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 11:43:35,789 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 11:43:35,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 11:43:35,883 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,897 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (1/1) ... [2020-07-17 11:43:35,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 11:43:35,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 11:43:35,918 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 11:43:35,918 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 11:43:35,919 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (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 [2020-07-17 11:43:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 11:43:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 11:43:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs_float [2020-07-17 11:43:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-07-17 11:43:35,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 11:43:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 11:43:35,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2020-07-17 11:43:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure fabs_float [2020-07-17 11:43:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 11:43:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-17 11:43:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 11:43:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 11:43:35,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 11:43:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-17 11:43:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-07-17 11:43:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 11:43:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 11:43:35,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 11:43:36,292 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 11:43:36,292 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-17 11:43:36,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:36 BoogieIcfgContainer [2020-07-17 11:43:36,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 11:43:36,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 11:43:36,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 11:43:36,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 11:43:36,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 11:43:35" (1/3) ... [2020-07-17 11:43:36,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b38fdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:36, skipping insertion in model container [2020-07-17 11:43:36,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 11:43:35" (2/3) ... [2020-07-17 11:43:36,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b38fdda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 11:43:36, skipping insertion in model container [2020-07-17 11:43:36,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 11:43:36" (3/3) ... [2020-07-17 11:43:36,303 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1011a.c [2020-07-17 11:43:36,310 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 11:43:36,316 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 11:43:36,329 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 11:43:36,352 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 11:43:36,352 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 11:43:36,352 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 11:43:36,352 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 11:43:36,352 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 11:43:36,353 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 11:43:36,353 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 11:43:36,353 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 11:43:36,371 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-17 11:43:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 11:43:36,376 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:36,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:43:36,377 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:36,381 INFO L82 PathProgramCache]: Analyzing trace with hash -2014572178, now seen corresponding path program 1 times [2020-07-17 11:43:36,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:36,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954177771] [2020-07-17 11:43:36,390 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:36,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 11:43:36,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 11:43:36,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954177771] [2020-07-17 11:43:36,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 11:43:36,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 11:43:36,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225918121] [2020-07-17 11:43:36,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 11:43:36,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 11:43:36,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 11:43:36,616 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 11:43:36,618 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 4 states. [2020-07-17 11:43:36,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 11:43:36,804 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2020-07-17 11:43:36,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 11:43:36,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-07-17 11:43:36,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 11:43:36,815 INFO L225 Difference]: With dead ends: 56 [2020-07-17 11:43:36,816 INFO L226 Difference]: Without dead ends: 28 [2020-07-17 11:43:36,820 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 [2020-07-17 11:43:36,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-17 11:43:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-17 11:43:36,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-17 11:43:36,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-07-17 11:43:36,859 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 17 [2020-07-17 11:43:36,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 11:43:36,860 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-07-17 11:43:36,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 11:43:36,860 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-07-17 11:43:36,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 11:43:36,861 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 11:43:36,862 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 11:43:36,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 11:43:36,862 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 11:43:36,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 11:43:36,863 INFO L82 PathProgramCache]: Analyzing trace with hash 516358161, now seen corresponding path program 1 times [2020-07-17 11:43:36,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 11:43:36,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82861559] [2020-07-17 11:43:36,864 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 11:43:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:36,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 11:43:36,949 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 11:43:36,949 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 11:43:36,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 11:43:36,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 11:43:36 BoogieIcfgContainer [2020-07-17 11:43:36,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 11:43:36,982 INFO L168 Benchmark]: Toolchain (without parser) took 1466.12 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 102.9 MB in the beginning and 122.5 MB in the end (delta: -19.6 MB). Peak memory consumption was 37.6 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,983 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,984 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.68 ms. Allocated memory is still 145.8 MB. Free memory was 102.5 MB in the beginning and 92.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,985 INFO L168 Benchmark]: Boogie Preprocessor took 128.89 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 180.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,985 INFO L168 Benchmark]: RCFGBuilder took 378.74 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,986 INFO L168 Benchmark]: TraceAbstraction took 681.86 ms. Allocated memory is still 202.9 MB. Free memory was 162.3 MB in the beginning and 122.5 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-07-17 11:43:36,998 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 271.68 ms. Allocated memory is still 145.8 MB. Free memory was 102.5 MB in the beginning and 92.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.89 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 92.0 MB in the beginning and 180.2 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 378.74 ms. Allocated memory is still 202.9 MB. Free memory was 180.2 MB in the beginning and 162.9 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 681.86 ms. Allocated memory is still 202.9 MB. Free memory was 162.3 MB in the beginning and 122.5 MB in the end (delta: 39.8 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of bitwiseAnd at line 21. Possible FailurePath: [L45] float x = 0.0f; VAL [x=0] [L46] CALL, EXPR fabs_float(x) VAL [\old(x)=0] [L13] __uint32_t ix; VAL [\old(x)=0, x=0] [L15] ieee_float_shape_type gf_u; [L16] gf_u.value = (x) [L17] EXPR gf_u.word [L17] (ix) = gf_u.word [L20] ieee_float_shape_type sf_u; [L21] sf_u.word = (ix & 0x7fffffff) [L22] EXPR sf_u.value [L22] (x) = sf_u.value [L24] return x; VAL [\old(x)=0, \result=8, ix=7, x=8] [L46] RET, EXPR fabs_float(x) VAL [fabs_float(x)=8, x=0] [L46] float res = fabs_float(x); [L49] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=8, res == 0.0f && __signbit_float(res) == 0=0, x=0] [L49] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L50] __VERIFIER_error() VAL [res=8, x=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 26 SDtfs, 21 SDslu, 5 SDs, 0 SdLazy, 31 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s 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=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 592 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...