/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_1252a.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 16:17:51,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 16:17:51,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 16:17:51,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 16:17:51,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 16:17:51,722 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 16:17:51,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 16:17:51,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 16:17:51,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 16:17:51,728 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 16:17:51,729 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 16:17:51,730 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 16:17:51,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 16:17:51,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 16:17:51,733 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 16:17:51,734 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 16:17:51,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 16:17:51,735 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 16:17:51,737 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 16:17:51,739 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 16:17:51,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 16:17:51,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 16:17:51,743 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 16:17:51,743 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 16:17:51,746 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 16:17:51,754 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 16:17:51,755 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 16:17:51,756 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 16:17:51,756 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 [2020-08-22 16:17:51,800 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 16:17:51,800 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 16:17:51,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 16:17:51,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 16:17:51,805 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 16:17:51,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 16:17:51,806 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 16:17:51,806 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 16:17:51,806 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 16:17:51,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 16:17:51,806 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 16:17:51,810 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 16:17:51,810 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 16:17:51,810 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 16:17:51,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 16:17:51,811 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 16:17:51,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 16:17:51,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 16:17:51,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 16:17:51,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 16:17:51,812 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 16:17:51,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 16:17:51,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 16:17:51,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 16:17:51,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 16:17:51,813 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 16:17:51,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 16:17:51,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 16:17:51,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 16:17:51,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-08-22 16:17:52,168 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 16:17:52,181 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 16:17:52,185 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 16:17:52,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 16:17:52,187 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 16:17:52,188 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-08-22 16:17:52,268 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e85ba5c/4a98ad21a1694deca96a6aa8ddef859c/FLAG6f85f0627 [2020-08-22 16:17:52,769 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 16:17:52,770 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-newlib/float_req_bl_1252a.c [2020-08-22 16:17:52,781 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e85ba5c/4a98ad21a1694deca96a6aa8ddef859c/FLAG6f85f0627 [2020-08-22 16:17:53,120 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10e85ba5c/4a98ad21a1694deca96a6aa8ddef859c [2020-08-22 16:17:53,131 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 16:17:53,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 16:17:53,135 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:53,135 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 16:17:53,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 16:17:53,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,142 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215fcb9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53, skipping insertion in model container [2020-08-22 16:17:53,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 16:17:53,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 16:17:53,351 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:53,354 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 16:17:53,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 16:17:53,491 INFO L208 MainTranslator]: Completed translation [2020-08-22 16:17:53,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53 WrapperNode [2020-08-22 16:17:53,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 16:17:53,493 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 16:17:53,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 16:17:53,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 16:17:53,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,527 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (1/1) ... [2020-08-22 16:17:53,550 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 16:17:53,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 16:17:53,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 16:17:53,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 16:17:53,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (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 16:17:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 16:17:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 16:17:53,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __fpclassify_float [2020-08-22 16:17:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure fmax_float [2020-08-22 16:17:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure __signbit_float [2020-08-22 16:17:53,619 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 16:17:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 16:17:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure __fpclassify_float [2020-08-22 16:17:53,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 16:17:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-08-22 16:17:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 16:17:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 16:17:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure fmax_float [2020-08-22 16:17:53,620 INFO L130 BoogieDeclarations]: Found specification of procedure __signbit_float [2020-08-22 16:17:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 16:17:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 16:17:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 16:17:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-08-22 16:17:53,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 16:17:53,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 16:17:53,949 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 16:17:53,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:53 BoogieIcfgContainer [2020-08-22 16:17:53,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 16:17:53,957 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 16:17:53,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 16:17:53,960 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 16:17:53,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 04:17:53" (1/3) ... [2020-08-22 16:17:53,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3492982d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:53, skipping insertion in model container [2020-08-22 16:17:53,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 04:17:53" (2/3) ... [2020-08-22 16:17:53,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3492982d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 04:17:53, skipping insertion in model container [2020-08-22 16:17:53,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 04:17:53" (3/3) ... [2020-08-22 16:17:53,964 INFO L109 eAbstractionObserver]: Analyzing ICFG float_req_bl_1252a.c [2020-08-22 16:17:53,979 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-08-22 16:17:53,987 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 16:17:54,003 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 16:17:54,047 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 16:17:54,047 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 16:17:54,048 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-08-22 16:17:54,048 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 16:17:54,048 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 16:17:54,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 16:17:54,048 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 16:17:54,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 16:17:54,072 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-08-22 16:17:54,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 16:17:54,079 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:54,080 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] [2020-08-22 16:17:54,081 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:54,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:54,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1078913502, now seen corresponding path program 1 times [2020-08-22 16:17:54,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:54,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677118078] [2020-08-22 16:17:54,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:54,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:17:54,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,336 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 16:17:54,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677118078] [2020-08-22 16:17:54,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:54,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 16:17:54,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656893410] [2020-08-22 16:17:54,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 16:17:54,347 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:54,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 16:17:54,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 16:17:54,362 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-08-22 16:17:54,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:54,633 INFO L93 Difference]: Finished difference Result 79 states and 107 transitions. [2020-08-22 16:17:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 16:17:54,635 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-08-22 16:17:54,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:54,647 INFO L225 Difference]: With dead ends: 79 [2020-08-22 16:17:54,648 INFO L226 Difference]: Without dead ends: 40 [2020-08-22 16:17:54,652 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 16:17:54,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-22 16:17:54,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-08-22 16:17:54,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-08-22 16:17:54,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-08-22 16:17:54,706 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 22 [2020-08-22 16:17:54,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:54,706 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-08-22 16:17:54,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 16:17:54,707 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-08-22 16:17:54,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 16:17:54,712 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:54,712 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] [2020-08-22 16:17:54,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 16:17:54,713 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:54,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:54,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1357269066, now seen corresponding path program 1 times [2020-08-22 16:17:54,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:54,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970527542] [2020-08-22 16:17:54,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:17:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:54,942 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 16:17:54,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970527542] [2020-08-22 16:17:54,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:54,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:17:54,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841124921] [2020-08-22 16:17:54,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:17:54,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:54,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:17:54,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:17:54,947 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 6 states. [2020-08-22 16:17:55,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:55,207 INFO L93 Difference]: Finished difference Result 59 states and 69 transitions. [2020-08-22 16:17:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:17:55,214 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-08-22 16:17:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:55,218 INFO L225 Difference]: With dead ends: 59 [2020-08-22 16:17:55,218 INFO L226 Difference]: Without dead ends: 44 [2020-08-22 16:17:55,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:17:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-08-22 16:17:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-08-22 16:17:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 16:17:55,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-22 16:17:55,243 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 23 [2020-08-22 16:17:55,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:55,244 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-22 16:17:55,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:17:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-22 16:17:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:17:55,246 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:55,246 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] [2020-08-22 16:17:55,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 16:17:55,248 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:55,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:55,249 INFO L82 PathProgramCache]: Analyzing trace with hash 888409989, now seen corresponding path program 1 times [2020-08-22 16:17:55,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:55,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898893537] [2020-08-22 16:17:55,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:55,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 16:17:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:55,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-08-22 16:17:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:55,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-08-22 16:17:55,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 16:17:55,457 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 16:17:55,457 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898893537] [2020-08-22 16:17:55,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 16:17:55,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 16:17:55,458 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958201960] [2020-08-22 16:17:55,459 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 16:17:55,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-08-22 16:17:55,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 16:17:55,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 16:17:55,460 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 6 states. [2020-08-22 16:17:55,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 16:17:55,670 INFO L93 Difference]: Finished difference Result 63 states and 74 transitions. [2020-08-22 16:17:55,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 16:17:55,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-22 16:17:55,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 16:17:55,672 INFO L225 Difference]: With dead ends: 63 [2020-08-22 16:17:55,672 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 16:17:55,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-22 16:17:55,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 16:17:55,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 44. [2020-08-22 16:17:55,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-08-22 16:17:55,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-08-22 16:17:55,684 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 26 [2020-08-22 16:17:55,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 16:17:55,685 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-08-22 16:17:55,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 16:17:55,685 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-08-22 16:17:55,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 16:17:55,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 16:17:55,686 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] [2020-08-22 16:17:55,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 16:17:55,687 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 16:17:55,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 16:17:55,687 INFO L82 PathProgramCache]: Analyzing trace with hash -908541370, now seen corresponding path program 1 times [2020-08-22 16:17:55,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-08-22 16:17:55,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715593059] [2020-08-22 16:17:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 16:17:55,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:55,717 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 16:17:55,755 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 16:17:55,789 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-08-22 16:17:55,790 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 16:17:55,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 16:17:55,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 04:17:55 BoogieIcfgContainer [2020-08-22 16:17:55,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 16:17:55,830 INFO L168 Benchmark]: Toolchain (without parser) took 2696.82 ms. Allocated memory was 146.8 MB in the beginning and 234.9 MB in the end (delta: 88.1 MB). Free memory was 103.1 MB in the beginning and 138.9 MB in the end (delta: -35.8 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:55,831 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 16:17:55,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 357.55 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 181.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:55,833 INFO L168 Benchmark]: Boogie Preprocessor took 57.52 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:55,834 INFO L168 Benchmark]: RCFGBuilder took 404.83 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 158.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:55,835 INFO L168 Benchmark]: TraceAbstraction took 1871.13 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 158.1 MB in the beginning and 138.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. [2020-08-22 16:17:55,839 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 357.55 ms. Allocated memory was 146.8 MB in the beginning and 202.4 MB in the end (delta: 55.6 MB). Free memory was 102.9 MB in the beginning and 181.3 MB in the end (delta: -78.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.52 ms. Allocated memory is still 202.4 MB. Free memory was 181.3 MB in the beginning and 178.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.83 ms. Allocated memory is still 202.4 MB. Free memory was 178.9 MB in the beginning and 158.7 MB in the end (delta: 20.2 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1871.13 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 158.1 MB in the beginning and 138.9 MB in the end (delta: 19.2 MB). Peak memory consumption was 51.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 79]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 78, overapproximation of someUnaryFLOAToperation at line 72. Possible FailurePath: [L72] float x = -0.0f; [L73] float y = 0.0f; VAL [y=0] [L75] CALL, EXPR fmax_float(x, y) VAL [\old(x)=4286578691, \old(y)=0] [L43] CALL, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691] [L20] __uint32_t w; VAL [\old(x)=4286578691, x=4286578691] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (w) = gf_u.word [L28] COND FALSE !(w == 0x00000000 || w == 0x80000000) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L30-L31] COND FALSE !((w >= 0x00800000 && w <= 0x7f7fffff) || (w >= 0x80800000 && w <= 0xff7fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L33-L34] COND FALSE !((w >= 0x00000001 && w <= 0x007fffff) || (w >= 0x80000001 && w <= 0x807fffff)) VAL [\old(x)=4286578691, w=4286578689, x=4286578691] [L36] COND FALSE !(w == 0x7f800000 || w == 0xff800000) [L39] return 0; VAL [\old(x)=4286578691, \result=0, w=4286578689, x=4286578691] [L43] RET, EXPR __fpclassify_float(x) VAL [\old(x)=4286578691, \old(y)=0, __fpclassify_float(x)=0, x=4286578691, y=0] [L43] COND TRUE __fpclassify_float(x) == 0 [L44] return y; VAL [\old(x)=4286578691, \old(y)=0, \result=0, x=4286578691, y=0] [L75] RET, EXPR fmax_float(x, y) VAL [fmax_float(x, y)=0, x=4286578691, y=0] [L75] float res = fmax_float(x, y); [L78] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [res=0, res == 0.0f && __signbit_float(res) == 0=0, x=4286578691, y=0] [L78] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L79] __VERIFIER_error() VAL [res=0, x=4286578691, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 117 SDslu, 43 SDs, 0 SdLazy, 296 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 97 NumberOfCodeBlocks, 97 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 4170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...