/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-benchs/interpolation2.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 03:41:49,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 03:41:49,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 03:41:49,180 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 03:41:49,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 03:41:49,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 03:41:49,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 03:41:49,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 03:41:49,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 03:41:49,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 03:41:49,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 03:41:49,192 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 03:41:49,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 03:41:49,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 03:41:49,195 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 03:41:49,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 03:41:49,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 03:41:49,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 03:41:49,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 03:41:49,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 03:41:49,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 03:41:49,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 03:41:49,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 03:41:49,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 03:41:49,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 03:41:49,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 03:41:49,225 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 03:41:49,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 03:41:49,226 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 03:41:49,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 03:41:49,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 03:41:49,229 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 03:41:49,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 03:41:49,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 03:41:49,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 03:41:49,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 03:41:49,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 03:41:49,268 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 03:41:49,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 03:41:49,271 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 03:41:49,272 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 03:41:49,272 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 03:41:49,272 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 03:41:49,272 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 03:41:49,273 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 03:41:49,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 03:41:49,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 03:41:49,275 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 03:41:49,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 03:41:49,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 03:41:49,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 03:41:49,276 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 03:41:49,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 03:41:49,277 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 03:41:49,277 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 03:41:49,277 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 03:41:49,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 03:41:49,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 03:41:49,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 03:41:49,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 03:41:49,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 03:41:49,280 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 03:41:49,280 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 03:41:49,726 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 03:41:49,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 03:41:49,756 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 03:41:49,757 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 03:41:49,758 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 03:41:49,759 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/interpolation2.c.v+nlh-reducer.c [2020-12-22 03:41:49,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c28ea587/fa9cb906ae1c476eb0342c343886593b/FLAGe3efad4e5 [2020-12-22 03:41:50,436 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 03:41:50,437 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+nlh-reducer.c [2020-12-22 03:41:50,448 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c28ea587/fa9cb906ae1c476eb0342c343886593b/FLAGe3efad4e5 [2020-12-22 03:41:50,792 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c28ea587/fa9cb906ae1c476eb0342c343886593b [2020-12-22 03:41:50,795 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 03:41:50,797 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 03:41:50,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:50,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 03:41:50,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 03:41:50,804 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:50" (1/1) ... [2020-12-22 03:41:50,806 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e844c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:50, skipping insertion in model container [2020-12-22 03:41:50,806 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 03:41:50" (1/1) ... [2020-12-22 03:41:50,814 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 03:41:50,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 03:41:51,007 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+nlh-reducer.c[1463,1476] [2020-12-22 03:41:51,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:51,025 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 03:41:51,053 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/interpolation2.c.v+nlh-reducer.c[1463,1476] [2020-12-22 03:41:51,059 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 03:41:51,076 INFO L208 MainTranslator]: Completed translation [2020-12-22 03:41:51,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51 WrapperNode [2020-12-22 03:41:51,077 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 03:41:51,078 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:51,078 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 03:41:51,078 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 03:41:51,087 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,097 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 03:41:51,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 03:41:51,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 03:41:51,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 03:41:51,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,153 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,153 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,163 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,176 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (1/1) ... [2020-12-22 03:41:51,180 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 03:41:51,183 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 03:41:51,183 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 03:41:51,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 03:41:51,188 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (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 [2020-12-22 03:41:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 03:41:51,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 03:41:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-22 03:41:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 03:41:51,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 03:41:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2020-12-22 03:41:51,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-22 03:41:51,760 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 03:41:51,760 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-22 03:41:51,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:51 BoogieIcfgContainer [2020-12-22 03:41:51,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 03:41:51,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 03:41:51,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 03:41:51,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 03:41:51,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 03:41:50" (1/3) ... [2020-12-22 03:41:51,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fee097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:51, skipping insertion in model container [2020-12-22 03:41:51,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 03:41:51" (2/3) ... [2020-12-22 03:41:51,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9fee097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 03:41:51, skipping insertion in model container [2020-12-22 03:41:51,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:51" (3/3) ... [2020-12-22 03:41:51,772 INFO L111 eAbstractionObserver]: Analyzing ICFG interpolation2.c.v+nlh-reducer.c [2020-12-22 03:41:51,779 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 03:41:51,784 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 03:41:51,806 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 03:41:51,834 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 03:41:51,834 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 03:41:51,834 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 03:41:51,835 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 03:41:51,835 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 03:41:51,835 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 03:41:51,835 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 03:41:51,835 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 03:41:51,852 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-12-22 03:41:51,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:41:51,858 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:51,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:51,859 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:51,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:51,871 INFO L82 PathProgramCache]: Analyzing trace with hash 775758574, now seen corresponding path program 1 times [2020-12-22 03:41:51,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:51,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623321951] [2020-12-22 03:41:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 03:41:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 03:41:52,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623321951] [2020-12-22 03:41:52,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 03:41:52,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-22 03:41:52,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460258314] [2020-12-22 03:41:52,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-22 03:41:52,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 03:41:52,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-22 03:41:52,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-22 03:41:52,186 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-12-22 03:41:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 03:41:52,263 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-12-22 03:41:52,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 03:41:52,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-12-22 03:41:52,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 03:41:52,276 INFO L225 Difference]: With dead ends: 41 [2020-12-22 03:41:52,276 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 03:41:52,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-22 03:41:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 03:41:52,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-12-22 03:41:52,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-12-22 03:41:52,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2020-12-22 03:41:52,322 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 13 [2020-12-22 03:41:52,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 03:41:52,322 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2020-12-22 03:41:52,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-22 03:41:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2020-12-22 03:41:52,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 03:41:52,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 03:41:52,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 03:41:52,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 03:41:52,324 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 03:41:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 03:41:52,325 INFO L82 PathProgramCache]: Analyzing trace with hash 792769235, now seen corresponding path program 1 times [2020-12-22 03:41:52,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 03:41:52,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790817467] [2020-12-22 03:41:52,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 03:41:52,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:52,356 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 03:41:52,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 03:41:52,410 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 03:41:52,411 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 03:41:52,415 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 03:41:52,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 03:41:52 BoogieIcfgContainer [2020-12-22 03:41:52,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 03:41:52,492 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 03:41:52,492 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 03:41:52,493 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 03:41:52,493 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 03:41:51" (3/4) ... [2020-12-22 03:41:52,497 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 03:41:52,498 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 03:41:52,503 INFO L168 Benchmark]: Toolchain (without parser) took 1702.01 ms. Allocated memory is still 160.4 MB. Free memory was 136.0 MB in the beginning and 104.5 MB in the end (delta: 31.5 MB). Peak memory consumption was 33.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:52,503 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 160.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 03:41:52,505 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.91 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 124.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:52,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.68 ms. Allocated memory is still 160.4 MB. Free memory was 124.7 MB in the beginning and 122.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:52,508 INFO L168 Benchmark]: Boogie Preprocessor took 44.49 ms. Allocated memory is still 160.4 MB. Free memory was 122.7 MB in the beginning and 121.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:52,509 INFO L168 Benchmark]: RCFGBuilder took 579.50 ms. Allocated memory is still 160.4 MB. Free memory was 121.1 MB in the beginning and 137.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:52,511 INFO L168 Benchmark]: TraceAbstraction took 725.64 ms. Allocated memory is still 160.4 MB. Free memory was 136.5 MB in the beginning and 105.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:52,513 INFO L168 Benchmark]: Witness Printer took 5.72 ms. Allocated memory is still 160.4 MB. Free memory was 105.0 MB in the beginning and 104.5 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 03:41:52,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 160.4 MB. Free memory is still 132.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 277.91 ms. Allocated memory is still 160.4 MB. Free memory was 135.8 MB in the beginning and 124.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 56.68 ms. Allocated memory is still 160.4 MB. Free memory was 124.7 MB in the beginning and 122.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.49 ms. Allocated memory is still 160.4 MB. Free memory was 122.7 MB in the beginning and 121.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 579.50 ms. Allocated memory is still 160.4 MB. Free memory was 121.1 MB in the beginning and 137.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 18.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 725.64 ms. Allocated memory is still 160.4 MB. Free memory was 136.5 MB in the beginning and 105.0 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. * Witness Printer took 5.72 ms. Allocated memory is still 160.4 MB. Free memory was 105.0 MB in the beginning and 104.5 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 53]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 34, overapproximation of someBinaryDOUBLEComparisonOperation at line 40, overapproximation of to_real at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 38. Possible FailurePath: [L1] int __return_main; [L12] int __return_136; VAL [__return_136=0, __return_main=0] [L15] int main__i; [L16] float main__z; [L17] float main__t; [L18] float main__min[5] = { 5, 10, 12, 30, 150 }; [L19] float main__max[5] = { 10, 12, 30, 150, 300 }; [L20] float main__org[5] = { 1, 5, -10, 30, 20 }; [L21] float main__slope[5] = { 4, -15, 40, -10, 0 }; [L22] main__t = __VERIFIER_nondet_float() [L23] int main____CPAchecker_TMP_0; [L24] EXPR main__min[0] VAL [__return_136=0, __return_main=0] [L24] COND TRUE main__t >= (main__min[0]) [L26] EXPR main__max[4UL] VAL [__return_136=0, __return_main=0] [L26] COND TRUE main__t <= (main__max[4UL]) [L28] main____CPAchecker_TMP_0 = 1 VAL [__return_136=0, __return_main=0] [L29] COND TRUE main____CPAchecker_TMP_0 != 0 [L31] main__i = 0 VAL [__return_136=0, __return_main=0] [L32] COND TRUE main__i < 5UL [L34] EXPR main__max[main__i] VAL [__return_136=0, __return_main=0] [L34] COND TRUE main__t <= (main__max[main__i]) [L38] EXPR main__org[main__i] [L38] EXPR main__slope[main__i] [L38] EXPR main__min[main__i] [L38] EXPR main__max[main__i] [L38] EXPR main__min[main__i] [L38] main__z = (main__org[main__i]) + (((main__slope[main__i]) * (main__t - (main__min[main__i]))) / ((main__max[main__i]) - (main__min[main__i]))) [L39] int main____CPAchecker_TMP_1; VAL [__return_136=0, __return_main=0] [L40] COND FALSE !(main__z >= -10.0) VAL [__return_136=0, __return_main=0] [L66] main____CPAchecker_TMP_1 = 0 VAL [__return_136=0, __return_main=0] [L47] int __tmp_1; [L48] __tmp_1 = main____CPAchecker_TMP_1 [L49] int __VERIFIER_assert__cond; [L50] __VERIFIER_assert__cond = __tmp_1 VAL [__return_136=0, __return_main=0] [L51] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_136=0, __return_main=0] [L53] reach_error() VAL [__return_136=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 41 SDslu, 73 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 240 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...