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/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 12:58:51,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 12:58:51,173 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 12:58:51,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 12:58:51,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 12:58:51,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 12:58:51,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 12:58:51,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 12:58:51,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 12:58:51,192 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 12:58:51,193 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 12:58:51,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 12:58:51,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 12:58:51,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 12:58:51,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 12:58:51,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 12:58:51,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 12:58:51,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 12:58:51,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 12:58:51,203 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 12:58:51,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 12:58:51,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 12:58:51,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 12:58:51,210 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 12:58:51,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-20 12:58:51,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 12:58:51,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 12:58:51,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 12:58:51,223 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 12:58:51,226 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 12:58:51,226 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 12:58:51,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 12:58:51,228 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 12:58:51,228 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 12:58:51,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 12:58:51,233 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 12:58:51,234 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 [2019-09-20 12:58:51,255 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 12:58:51,255 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 12:58:51,257 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 12:58:51,257 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 12:58:51,258 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 12:58:51,258 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 12:58:51,258 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 12:58:51,258 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 12:58:51,258 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 12:58:51,259 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 12:58:51,260 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 12:58:51,260 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 12:58:51,260 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 12:58:51,261 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 12:58:51,261 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 12:58:51,261 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 12:58:51,261 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 12:58:51,261 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 12:58:51,262 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 12:58:51,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 12:58:51,263 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 12:58:51,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 12:58:51,265 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 12:58:51,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 12:58:51,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 12:58:51,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 12:58:51,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 12:58:51,268 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 12:58:51,268 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 12:58:51,315 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 12:58:51,330 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 12:58:51,334 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 12:58:51,335 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 12:58:51,336 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 12:58:51,336 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2019-09-20 12:58:51,408 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7e257b3/c02237b7cdbd4fa38a157420f8f5e195/FLAGbd93f66d7 [2019-09-20 12:58:51,845 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 12:58:51,846 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat2.c [2019-09-20 12:58:51,853 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7e257b3/c02237b7cdbd4fa38a157420f8f5e195/FLAGbd93f66d7 [2019-09-20 12:58:52,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a7e257b3/c02237b7cdbd4fa38a157420f8f5e195 [2019-09-20 12:58:52,198 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 12:58:52,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 12:58:52,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:52,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 12:58:52,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 12:58:52,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e61786b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52, skipping insertion in model container [2019-09-20 12:58:52,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,212 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 12:58:52,236 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 12:58:52,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:52,463 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 12:58:52,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 12:58:52,504 INFO L192 MainTranslator]: Completed translation [2019-09-20 12:58:52,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52 WrapperNode [2019-09-20 12:58:52,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 12:58:52,506 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 12:58:52,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 12:58:52,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 12:58:52,608 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,624 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,625 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (1/1) ... [2019-09-20 12:58:52,627 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 12:58:52,627 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 12:58:52,627 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 12:58:52,628 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 12:58:52,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (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 [2019-09-20 12:58:52,679 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 12:58:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 12:58:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-09-20 12:58:52,680 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 12:58:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 12:58:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-09-20 12:58:52,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-20 12:58:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-09-20 12:58:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 12:58:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 12:58:52,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 12:58:52,859 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 12:58:52,859 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-20 12:58:52,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:52 BoogieIcfgContainer [2019-09-20 12:58:52,860 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 12:58:52,861 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 12:58:52,862 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 12:58:52,865 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 12:58:52,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 12:58:52" (1/3) ... [2019-09-20 12:58:52,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1001fc54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:52, skipping insertion in model container [2019-09-20 12:58:52,866 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 12:58:52" (2/3) ... [2019-09-20 12:58:52,866 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1001fc54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 12:58:52, skipping insertion in model container [2019-09-20 12:58:52,867 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 12:58:52" (3/3) ... [2019-09-20 12:58:52,869 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2019-09-20 12:58:52,878 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 12:58:52,884 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 12:58:52,900 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 12:58:52,930 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 12:58:52,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 12:58:52,931 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 12:58:52,931 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 12:58:52,931 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 12:58:52,931 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 12:58:52,931 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 12:58:52,932 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 12:58:52,932 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 12:58:52,948 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-09-20 12:58:52,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 12:58:52,952 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:52,953 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:52,955 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:52,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:52,960 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-09-20 12:58:52,962 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:52,963 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:53,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:53,009 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:53,009 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:53,028 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 12:58:53,028 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 12:58:53,028 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-20 12:58:53,047 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:53,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:53,065 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-09-20 12:58:53,070 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:53,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:58:53,089 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:58:53,090 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 12:58:53,094 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 12:58:53,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 12:58:53,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:58:53,107 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-09-20 12:58:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:58:53,126 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2019-09-20 12:58:53,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 12:58:53,127 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-09-20 12:58:53,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:58:53,135 INFO L225 Difference]: With dead ends: 37 [2019-09-20 12:58:53,135 INFO L226 Difference]: Without dead ends: 16 [2019-09-20 12:58:53,138 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 12:58:53,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-09-20 12:58:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-09-20 12:58:53,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-09-20 12:58:53,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-09-20 12:58:53,174 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-09-20 12:58:53,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:58:53,175 INFO L475 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-09-20 12:58:53,175 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 12:58:53,175 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-09-20 12:58:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-09-20 12:58:53,176 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:58:53,176 INFO L407 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:58:53,177 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:58:53,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:58:53,177 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-09-20 12:58:53,177 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:58:53,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:58:53,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:53,179 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:53,179 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:58:53,182 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 12:58:53,182 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 12:58:53,182 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-20 12:58:53,204 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:58:53,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:58:53,219 WARN L254 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 12:58:53,221 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:58:53,387 WARN L191 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 26 [2019-09-20 12:58:53,403 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:59:02,509 WARN L191 SmtUtils]: Spent 2.29 s on a formula simplification. DAG size of input: 40 DAG size of output: 3 [2019-09-20 12:59:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:02,537 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 12:59:02,537 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 12:59:02,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 12:59:02,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 12:59:02,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=12, Unknown=1, NotChecked=0, Total=20 [2019-09-20 12:59:02,540 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2019-09-20 12:59:04,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:04,693 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-09-20 12:59:04,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 12:59:04,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-09-20 12:59:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:04,697 INFO L225 Difference]: With dead ends: 27 [2019-09-20 12:59:04,697 INFO L226 Difference]: Without dead ends: 25 [2019-09-20 12:59:04,698 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=11, Invalid=18, Unknown=1, NotChecked=0, Total=30 [2019-09-20 12:59:04,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-09-20 12:59:04,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2019-09-20 12:59:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-09-20 12:59:04,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2019-09-20 12:59:04,708 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 10 [2019-09-20 12:59:04,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:04,709 INFO L475 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2019-09-20 12:59:04,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 12:59:04,709 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2019-09-20 12:59:04,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-20 12:59:04,710 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 12:59:04,710 INFO L407 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 12:59:04,711 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 12:59:04,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 12:59:04,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-09-20 12:59:04,712 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 12:59:04,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 12:59:04,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:04,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:04,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 12:59:04,717 ERROR L235 seRefinementStrategy]: Caught known exception: Unsupported non-linear arithmetic [2019-09-20 12:59:04,717 INFO L258 seRefinementStrategy]: Advancing trace checker [2019-09-20 12:59:04,717 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-09-20 12:59:04,747 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 12:59:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 12:59:04,759 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2019-09-20 12:59:04,761 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 12:59:04,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 12:59:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 12:59:04,940 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-09-20 12:59:04,941 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-09-20 12:59:04,941 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 12:59:04,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 12:59:04,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=53, Unknown=1, NotChecked=0, Total=72 [2019-09-20 12:59:04,942 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 9 states. [2019-09-20 12:59:05,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 12:59:05,139 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2019-09-20 12:59:05,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 12:59:05,141 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2019-09-20 12:59:05,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 12:59:05,142 INFO L225 Difference]: With dead ends: 22 [2019-09-20 12:59:05,142 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 12:59:05,144 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=80, Unknown=1, NotChecked=0, Total=110 [2019-09-20 12:59:05,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 12:59:05,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 12:59:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 12:59:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 12:59:05,145 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-09-20 12:59:05,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 12:59:05,146 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 12:59:05,146 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 12:59:05,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 12:59:05,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 12:59:05,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-20 12:59:05,300 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-09-20 12:59:05,300 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:59:05,301 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-09-20 12:59:05,301 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-09-20 12:59:05,301 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-09-20 12:59:05,301 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-09-20 12:59:05,302 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (= (+ (+ (+ (- (* main_~v~0 main_~v~0)) (* main_~u~0 main_~u~0)) (- (* 2 main_~u~0))) (* 2 main_~v~0)) (+ (* 4 main_~A~0) (* 4 main_~r~0))) (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0))) [2019-09-20 12:59:05,302 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 28 39) no Hoare annotation was computed. [2019-09-20 12:59:05,302 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 44) no Hoare annotation was computed. [2019-09-20 12:59:05,302 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 44) no Hoare annotation was computed. [2019-09-20 12:59:05,302 INFO L443 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-09-20 12:59:05,302 INFO L443 ceAbstractionStarter]: For program point L32(lines 32 38) no Hoare annotation was computed. [2019-09-20 12:59:05,303 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 28 39) the Hoare annotation is: (and (= (+ (+ (+ (- (* main_~v~0 main_~v~0)) (* main_~u~0 main_~u~0)) (- (* 2 main_~u~0))) (* 2 main_~v~0)) (+ (* 4 main_~A~0) (* 4 main_~r~0))) (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0))) [2019-09-20 12:59:05,303 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 44) the Hoare annotation is: true [2019-09-20 12:59:05,303 INFO L439 ceAbstractionStarter]: At program point L28-2(lines 28 39) the Hoare annotation is: (let ((.cse0 (+ (+ (+ (- (* main_~v~0 main_~v~0)) (* main_~u~0 main_~u~0)) (- (* 2 main_~u~0))) (* 2 main_~v~0))) (.cse1 (* 4 main_~A~0))) (and (= .cse0 (+ .cse1 (* 4 main_~r~0))) (exists ((main_~R~0 Int)) (< (let ((.cse2 (+ main_~R~0 (- 1)))) (* .cse2 .cse2)) main_~A~0)) (= .cse0 .cse1))) [2019-09-20 12:59:05,304 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-09-20 12:59:05,304 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-09-20 12:59:05,304 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-09-20 12:59:05,304 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-09-20 12:59:05,304 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-09-20 12:59:05,305 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-09-20 12:59:05,312 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-09-20 12:59:05,314 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-09-20 12:59:05,321 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-09-20 12:59:05,321 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-09-20 12:59:05,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 12:59:05 BoogieIcfgContainer [2019-09-20 12:59:05,324 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 12:59:05,327 INFO L168 Benchmark]: Toolchain (without parser) took 13126.81 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 86.5 MB in the beginning and 82.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:05,327 INFO L168 Benchmark]: CDTParser took 0.44 ms. Allocated memory is still 132.1 MB. Free memory is still 104.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 12:59:05,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.54 ms. Allocated memory is still 132.1 MB. Free memory was 86.5 MB in the beginning and 76.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:05,330 INFO L168 Benchmark]: Boogie Preprocessor took 121.00 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 76.7 MB in the beginning and 175.6 MB in the end (delta: -98.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:05,330 INFO L168 Benchmark]: RCFGBuilder took 233.19 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 163.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:05,331 INFO L168 Benchmark]: TraceAbstraction took 12463.04 ms. Allocated memory is still 199.2 MB. Free memory was 162.8 MB in the beginning and 82.7 MB in the end (delta: 80.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. [2019-09-20 12:59:05,335 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.44 ms. Allocated memory is still 132.1 MB. Free memory is still 104.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.54 ms. Allocated memory is still 132.1 MB. Free memory was 86.5 MB in the beginning and 76.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.00 ms. Allocated memory was 132.1 MB in the beginning and 199.2 MB in the end (delta: 67.1 MB). Free memory was 76.7 MB in the beginning and 175.6 MB in the end (delta: -98.9 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 233.19 ms. Allocated memory is still 199.2 MB. Free memory was 175.6 MB in the beginning and 163.7 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12463.04 ms. Allocated memory is still 199.2 MB. Free memory was 162.8 MB in the beginning and 82.7 MB in the end (delta: 80.1 MB). Peak memory consumption was 80.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant [2019-09-20 12:59:05,344 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-09-20 12:59:05,344 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-09-20 12:59:05,344 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-09-20 12:59:05,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: -(v * v) + u * u + -(2 * u) + 2 * v == 4 * A + 4 * r && (\exists main_~R~0 : int :: (main_~R~0 + -1) * (main_~R~0 + -1) < A) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. SAFE Result, 12.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 2.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 44 SDtfs, 19 SDslu, 73 SDs, 0 SdLazy, 66 SolverSat, 8 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 5.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 12 PreInvPairs, 17 NumberOfFragments, 134 HoareAnnotationTreeSize, 12 FomulaSimplifications, 186 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 9.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 33 ConstructedInterpolants, 4 QuantifiedInterpolants, 2871 SizeOfPredicates, 8 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...